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    SULIT 4531/1

    4531/1 SULIT

    4531/1

    Fizik

    Kertas 1

    OGOS

    2011

    1 jam

    BAHAGIAN PENGURUSAN

    SEKOLAH BERASRAMA PENUH DAN SEKOLAH KLUSTER

    KEMENTERIAN PELAJARAN MALAYSIA

    PEPERIKSAAN PERCUBAAN

    SIJIL PELAJARAN MALAYSIA 2011

    FIZIK

    KERTAS 1

    Satu jam lima belas minit

    JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU

    1. Kertas soalan ini mengandungi 50 soalan.

    2. Jawab semua soalan.

    3. Jawab dengan menghitamkan ruangan yang betul pada kertas jawapan.4. Bagi setiap soalan hitamkan satu ruangan sahaja.

    5. Sekiranya anda hendak menukarkan jawapan , padamkan tanda yang telah dibuat.

    6. Kemudian hitamkan jawapan yang baru.

    7. Satu senarai rumus disediakan di halaman 2.

    8. Penggunaan kalkulator saintifik yang tidak boleh diprogramkan adalah dibenarkan.

    Kertas soalan ini mengandungi 29 halaman bercetak

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    SULIT 4531/1

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    The following information may be useful. The symbols have their usual meaning.

    Maklumat berikut mungkin berfaedah. Simbol-simbol mempunyai makna yang biasa.

    1. a = vu 16. Power, P = energy

    t time2. v

    2= u

    2+ 2 as 17. V = IR

    3. s = ut + 1 at2

    18. Power, P = IV

    2 kuasa

    4. Momentum = mv 19. Ns = VsNp Vp

    5. F = ma 20. Efficiency = Is Vs x 100 %

    (kecekapan) Ip

    Vp

    6. Kinetic energy = 1 mv2

    (Tenaga kinetik) 2 21. 1 = 1 + 1

    Tenaga keupayaan f u v

    7. Potential energy = mgh 22. n = sin i

    Tenaga keupayaan sin r

    8. Elastic potential energy = 1 Fx 23. n = Real depth

    (Tenaga keupayaan kenyal) 2 Apparent depth

    9. = m 24. = ax

    V D

    10. Pressure, = hpg. 25. Q= It

    Tekanan

    11. Pressure, = F 26. E = I (R + r)

    Tekanan A

    27. eV = mv2

    12. Heat, Q = mc

    Haba 28. g = 10 ms-2

    13. PV = Constant (pemalar)

    14. E = m c2

    15. v = f

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    SULIT 4531/1

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    Answer all questions. Each question is followed by either three or four options.

    Choose the best option for each question then blacken the correct space on the answer

    sheet.

    Jawab semua soalan.Tiaptiap soalan diikuti oleh sama ada tiga atau, empat pilihan

    jawapan. Pilih satu jawapan yang terbaik bagi setiap soalan dan hitamkan ruangan yangsepadan pada kertas jawapan objektif anda

    1. Which of following is a derived quantity?

    Di antara berikutyang manakah adalah kuantiti terbitan?

    A. Length /panjangB. Mass /jisimC. Weight /berat

    D. Temperature / Suhu2. Which instrument is the most sensitive?

    Alat pengukur yang manakah yang paling peka?

    A.

    B.

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    C.

    D.

    3. The pressure, P of gas is inversely proportional to the volume, V when mass and temperature

    is kept constant. Which graph shows the correct relationship between P and V?

    Tekanan gas, P berkadar songsang dengan Isipadu, V apabila jisim dan suhu tetap.Graf yang manakah menunjukkan hubungan P dan V?.

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    4. Diagram 1 shows spring P is compressed to a distance x , when a load of mass, m

    is placed onto it.

    Another identical spring is then arranged parallel to spring P and a load of mass 2m

    is placed onto the spring system as shown in Diagram 2.

    Rajah 1 menunjukkan keadaan spring P dimampatkan pada jarak x apabila bebanberjisim, m diletakkan di atasnya..

    Spring lain yang serupa kemudiannya disusun secara selari dengan spring P dan beban

    berjisim 2m diletakkan ke atas sistem spring itu seperti yang ditunjukkan dalam Rajah 2.

    Spring P

    What is the compression of the spring system in Diagram 2 ?

    Berapakah mampatan bagi sistem spring dalam Rajah 2?

    A. x

    B. x

    C. 2x

    D. 4x

    Spring P

    Diagram 1/Rajah 1

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    5. Diagram 3 shows a coconut is falling from a certain height to the ground.

    Rajah 3. menunjukkan sebiji buah kelapa sedang jatuh daripada suatu ketinggian

    ke tanah.

    At which position, P, Q or R, the coconut has the highest gravitational potential energy?Pada kedudukan manakah,P, Q atau R, buah kelapa itu mempunyai tenaga keupayaan graviti

    yang paling tinggi?

    A. P

    B. Q

    C. R

    6. Diagram 4 shows a man is pulling a sledge with a rope.Rajah 4. menunjukkan seorang lelaki sedang menarik sebuah kereta luncur salji dengan

    menggunakan se utas tali.

    Diagram 4 /Rajah 4

    Which of the following will move the sledge forward with the maximum acceleration?

    Yang manakah berikut akan menggerakkan kereta luncur ke hadapan dengan pecutan maksimum ?

    Angle, / Sudut, Force, F/Daya, F

    A. Small/Kecil Small /Kecil

    B. Small/Kecil Big/Besar

    C. Big/ Besar Small/Kecil

    D. Big/Besar Big/Besar

    P

    Q

    R

    Diagram 3/Rajah 3

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    7. Diagram 5 shows two steel ball bearings, P and Q, being dropped near the surface of the earth.Rajah 5 menunjukkan dua biji bebola keluli, P dan Q, dijatuhkan berhampiran dengan permukaan bumi.

    DIAGRAM 5 /RAJAH 5

    Which velocity-time graph shows the correct motion of P and Q?

    Antara graf halaju-masa berikut, yang manakah betul bagi gerakan P dan Q?

    A B

    C D

    8. Diagram 6 shows two trolleys, M and N of the same mass before and after collision.

    Rajah 6 menunjukkan dua troli M dan N yang berjisim sama sebelum dan selepas perlanggaran.

    Diagram 6/Rajah 6

    P Q

    v

    t0

    v

    t0

    v

    t0

    v

    t0

    Q

    P Q

    P

    P

    QQ

    P

    At rest

    Pegun

    Before collision

    Sebelum pelanggaranAfter collision

    Selepas pelanggaran

    Trolley M

    Troli M

    u

    Trolley N

    Troli N v

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    Which is true about u and v?

    Yang manakah benar mengenai u dan v?

    A. v = uB. v > uC. v = u

    D. v = 2u

    9. Diagram 7 shows a load of mass 5 kg being pulled by force, 80 N.

    Rajah 7 menunjukkan suatu beban berjisim 5 kg ditarik oleh daya, 80 N.

    What is the acceleration of the load?

    Berapakah pecutan bagi beban itu?

    A. 0.6 ms-2

    B. 6.0 ms-2

    C. 15.0 ms-2

    D. 16.0 ms-2

    10. Diagram 8 shows a man lift up a 10 kg object.Rajah 8 menunjukkan seorang lelaki mengangkat objek berjisim 10 kg.

    Diagram 8 /Rajah 8

    5 kg

    80 NDiagram 7/Rajah 7

    100 cm

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    What is the work done by the man?Berapakah kerja yang dilakukan oleh lelaki itu?

    A 10 J

    B 100J

    C 1000 JD 10000 J

    11. Diagram 9 shows two students skating towards P.Rajah 9 menunjukkan dua pelajar sedang meluncur ke arah P.

    Diagram 9/Rajah 9

    What happens to the girl when the boy releases her hand?Apakah akan terjadi kepada pelajar perempuan bila pelajar lelaki melepaskan pegangan

    tangannya.

    A. Stays stationary/Menjadi pegunB. Moves towards P/Bergerak ke PC. Moves towards Q/Bergeak ke Q

    12. Which statement is true about the Kinetic Theory of gasses?

    Kenyataan yang manakah benar tentang Teori Kinetik gas?

    A. The pressure in a gas is caused by collision between the moleculesTekanan di dalam gas disebabkan oleh perlanggaran antara molekul.

    B. The collisions between the gas molecules and the walls of the container are inelasticPerlanggaran antara molekul gas dan dinding bekas adalah tidak kenyal

    C. At absolute zero temperature, the velocity of gas molecules is zero

    Pada suhu sifar mutlak, halaju molekul gas adalah sifar

    D. When the gas temperature increase, kinetic energy of gas molecules decrease.

    Apabila suhu gas meningkat, tenaga kinetik molekul gas berkurang

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    13. Diagram 10 shows a stream of fluid flowing through a tube.

    Gambarajah 10 menunjukkan aliran bendalir melalui sebuah tiub

    Which graph best describe the change in pressure to the distance of x?Graf yang manakah yang paling tepat menjelaskan perubahan tekanan terhadap jarak x?

    Diagram 10/Rajah 10

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    14. Diagram 11 shows a container of 3 different shapes are filled with oil at the same

    level. The pressure caused by the oil at point X , Y and Z are Px , Py and Pz respectively.

    Gambarajah 11 menunjukkan sebuah bekas yang berbeza bentuk diisikan dengan minyak pada

    paras yang sama. Tekanan yang disebabkan oleh minyak pada titik X, Y dan Z adalah Px, Py dan Pz.

    .

    Which comparison is correct ?

    Perbandingan yang manakah benar?

    A. Py< Px< PzB. Px< Py> PzC. Py= Px= Pz

    15. A metal block is immersed in water as shown in Diagram 12. If the water pressure exertedon top, P1 and at the bottom, P2 are 1.0 x 10

    5Pa and 1.2 x 10

    5Pa respectively.

    Satu bongkah logam direndamkan ke dalam air seperti ditunjukkan Rajah 12. Jika tekanan air

    dikenakan pada permukaan atas, P1 dan permukaan bawah, P2 adalah masing-masing

    1.0 x 105

    Pa dan 1.2 x 105

    Pa.

    Diagram 11/Rajah 11

    Diagram 12/Rajah 12

    P1

    P2

    0.1 m0.2 m

    0.4 m

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    Calculate the buoyant force acting on the metal block?

    Hitung daya julangan yang dikenakan ke atas bongkah logam itu?

    A. 160 NB. 400 NC. 800 ND. 1.0 x 105 N

    16. Diagram 13 shows a floating object.

    Rajah 13 menunjukkan suatu objek yang sedang terapung.

    The buoyant force acting on the object will decrease when the

    Daya julangan yang bertindak ke atas objek itu berkurang jika

    A. weight of the object decrease/berat objek itu berkurangB. depth of the liquid decrease / kedalaman cecair itu berkurangC. density of the liquid decrease/ketumpatan cecair itu berkurangD. volume of the object increase/isipadu objek itu meningkat

    17. Which diagram operates based on the Pascals principle?

    Yang manakah antara berikut beroperasi berlandaskan Prinsip Pascal?

    Diagram 13/Rajah 13

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    18. Diagram 14 shows a U-tube filled with two types of liquid of different densities.

    Rajah 14 menunjukkan tiub U yang diisikan dengan dua jenis cecair yang berbeza ketumpatannya.

    Which statement is true? /Yang manakah antara pernyataan berikut adalah benar?

    A . Pressure at point P is equal to point Q

    Tekanan pada titik P adalah sama dengan titik Q

    B . Atmospheric pressure exerted double at the surface of water than oil

    Tekanan atmosfera dikenakan dua kali ganda pada permukaan air berbanding minyak

    C . Pressure at point R is the pressure exerted only by height of oil ,H

    Tekanan yang dikenakan pada titik R adalah tekanan yang disebabkan oleh ketinggian

    minyak sahaja.

    D. Pressure that is caused by the height H, of oil is equal to pressure that is exerted by

    the height ,h of water.

    Tekanan yang disebabkan oleh ketinggian minyak, H adalah sama dengan tekanan

    yang disebabkan oleh ketinggian air, h

    19. Some distilled water is heated in a beaker until it boils. After a few seconds of heating,

    the temperature will

    Sedikit air suling dipanaskan sehingga mendidih. S elepas beberapa saat dipanaskan suhu air akan

    A. increase./bertambahB. decrease./berkurangC. not change/tidak berubah

    Diagram 14/Rajah 14

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    20. Diagram 15 shows a process when water is changed into steam

    Rajah 15 menunjukkan proses di mana air bertukar kepada stim

    Diagram 15

    Rajah 15

    What is the name of the heat absorbed during the process ?

    Apakah nama haba yang diserap semasa proses ini ?

    A. specific heat capacity /muatan haba tentu

    B . latent heat of fusion/ haba pendam pelakuranC. latent heat of vaporisation./haba pendam pengewapan

    D. latent heat of condensation/haba pendam pelakuran

    21 A 60 W immersion heater is used to boil liquid X. After boiling for 3 minutes, 5 g of the

    liquid X changes to steam.

    Pemanas rendam 60 W memanaskan cecair X sehingga mendidih. Setelah mendidih

    selama 3 minit, 5 g cecair X berubah menjadi stim.

    Which expression determines the specific latent heat of vaporization of liquid X?

    Ungkapan yang manakah menentukan haba pendam tentu pengewapan cecair X?

    A. (60 x 3) / 0.005 J kg-1

    B. (60 x 3 x 60 x 0.005) J kg-1

    C. 0.005 / (60 x 3 x 60 ) J kg-1

    D. (60 x 3 x 60) / 0.005 J kg-1

    22 Table 16 shows the characteristics of water when boiled at two different sea levels.

    Jadual 16 menunjukkan ciri air apabila dididihkan pada dua paras laut yang berbeza.

    Altitude At sea level At 30m above

    sea level

    Time taken to

    boil

    10 minutes 5 minutes

    Energy used 1000 J 1000 J

    Table 16/jadual 16

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    Based on the table 16, which statement is true at high altitude ?

    Berdasarkan jadual di atas, penyataan manakah benar pada altitude tinggi?

    A. the temperature is lower /suhu lebih rendah

    B. the atmospheric pressure is lower /tekanan atmosfera lebih rendah

    C. the air is less damp /kelembapan udara lebih rendah

    D. the rate of heat lost is faster / kadar pembebasan haba lebih cepat

    23. The air pressure in a car tyre is 210 kPa at a temperature of 270C . What is the air pressure

    in the tyre when the temperature is 370C?

    Tekanan udara dalam tayar kereta ialah 210 kPa pada suhu 27oC. Berapakah tekanan dalam

    tayar tersebut pada suhu 37oC?

    [Assume the volume of the air in the tyre is constant]

    [Anggap isipadu udara dalam tayar adalah tetap]

    A. 153 kPa

    B. 203 kPa

    C. 217 kPa

    D. 288 kPa

    24. Which diagram 17 shows the correct reflection of light by a concave mirror?

    Rajah 17 manakah menunjukkan pantulan cahaya yang betul oleh sebuah cermin cekung?

    Diagram 17/rajah 17

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    25. Diagram 18 shows an object placed at the base of a swimming pool.

    The object is 8 m from the surface of the water.

    Rajah 18 menunjukkan satu objek yang berada di dasar sebuah kolam renang.

    Jarak objek daripada permukaan air ialah 8 m.

    Diagram 18/Rajah 18

    What is the apparent depth of the object ?

    Berapakah dalam ketara objek tersebut ?

    [ The refractive index of water = 1.33 ]

    [Indeks biasan air = 1.33]

    A. 6 m

    B. 7 m

    C. 10 m

    D. 11 m

    26. Which pair of lenses can be used to construct a telescope?

    Pasangan kanta yang manakah boleh digunakan untuk membina teleskop?

    A. Two concave lenses with focal lengths of 6 cm and 9 cm.

    Dua kanta cekung dengan jarak fokus 6 cm dan 9 cm

    B. Two convex lenses with focal lengths of 10 cm and 80 cm.Dua kanta cembung dengan jarak fokus 10 cm dan

    C. Two concave lenses with focal lengths of 10 cm and 80 cm.

    Dua kanta cekung dengan jarak fokus 10 cm dan 80 cm

    D. A convex lens with focal lengths of 6 cm and a concave with focal length 9 cm.

    kanta cembung dengan jarak fokus 6 cm dan kanta cekung dengan jarak fokus 9 cm.

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    27 Diagram 19 shows the image I of an object O that is formed by a convex lens.

    Rajah 19 menunjukkan pembentukan imej I bagi satu objek O oleh suatu kanta cembung.

    Diagram19/Rajah 19

    What is the magnification of the image ?

    Apakah pembesaran bagi imej itu ?

    A. 0.3

    B. 0.4

    C. 2.5

    D. 3.5

    28. Diagram 20 shows the image of an insect seen under a magnifying glass.

    Rajah 20 menunjukkan imej suatu serangga yang dilihat dibawah kanta pembesar.

    The position of the insect from the magnifying glass must be

    Kedudukan serangga itu daripada kanta pembesar adalah

    A . less thanf/kurang daripada f

    B. betweenfand 2f /antara f dan 2f

    C. equal to 2f /sama dengan 2f

    D. more than 2f /lebih daripada 2f

    Diagram 20/Rajah 20

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    29. Which diagram shows the correct pattern of reflected water waves?

    Rajah yang manakah menunjukkan corak pantulan gelombang air yang betul?

    A. B.

    C. D.

    30. Diagram 21 shows the interference pattern of water waves.

    Rajah 21 menunjukkan corak interferen gelombang air.

    Diagram 21/Rajah 21

    Reflector

    Pemantul

    Reflector

    Pemantul

    Reflector

    Pemantul

    Reflector

    Pemantul

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    What happens to the separation between two consecutive nodal lines,x, if the

    depth of water in the ripple tank is increased?

    Apakah yang akan berlaku kepada jarak pemisahan 2 garisan nodal berturutan, x, jika

    kedalaman air dalam tangki riak meningkat?

    A. Unchanged /Tidak berubahB. Increase /Bertambah

    C. Decrease /Berkurang

    31. Which is the correct example of a longitudinal wave and of a transverse wave ?

    Contoh yang manakah betul bagi gelombang membujur dan gelombang melintang ?

    Longitudinal Wave Transverse Wave

    Gelombang Membujur Gelombang Melintang

    A. Gamma Ray/Sinar Gamma Light/Cahaya

    B. Sound /Bunyi Gamma Ray/ Sinar Gamma

    C. Light /Cahaya Radio /Radio

    D. Radio /Radio Sound /Bunyi

    32. The diagram 22 shows a displacement-distance graph of a wave.

    Rajah menunjukkan graf sesaran-jarak bagi suatu gelombang.

    Diagram 22/Rajah 22

    What is the amplitude of the wave,?

    Berapakah nilai amplitud gelombang tersebut ?

    A. 16 m

    B. 20 m

    C. 32 m

    D. 40 m

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    33. Diagram 23 shows a ball floating in a water tank.

    Rajah 23 menunjukkan sebiji bola terapung di dalam sebuah tangki air.

    Diagram 22 /Rajah 22

    Which is the correct movement of the ball, when the wave propagates ?

    Pergerakan yang manakah benar mengenai bola apabila gelombang merambat?.

    34. A system is oscillated at a frequency equivalent to its natural frequency by

    an external force.

    Suatu system diayunkan pada satu frekuensi yang setara dengan frekuensi

    aslinya oleh satu daya luar.

    This phenomenon is called

    Fenomena ini dikenali sebagai

    A. Damping /Pelembapan

    B Resonance /Resonans

    C Rectification /Rektifikasi

    D Pitching /Kelangsingan

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    35. Diagram 23 shows a candle flame placed between two metal plates, P and Q.

    Rajah 23 menunjukkan nyalaan lilin diletakkan antara dua plat logam, P dan Q.

    What happens to the candle flame when the switch is switched on ?

    Apakah yang berlaku kepada nyalaan lilin itu apabila suis dihidupkan?

    A. moved to the right only./ bergerak ke sebelah kanan sahaja

    B. moved to the left only/ bergerak sebelah kiri sahaja

    C. will spread to both plates/akan tersebar kedua-dua plat

    D. will remain unchanged /akan kekal tidak berubah

    36. Which graph of resistance, R against temperature, , for a thermistor is true?

    Graf rintangan, R melawan suhu, , yang manakah benar bagi satu termistor?

    A. B.

    C. D.

    Diagram 23 /Rajah 23

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    37. Which circuit produces the highest ammeter reading?

    Litar manakah yang menghasilkan bacaan ammeter yang paling tinggi?

    A. B.

    .

    C. D.

    38. Diagram 24 shows an electric circuit consisting of a battery with e.m.f

    1.5 V and internal resistance 0.5 is connected to a resistor2 .

    Rajah 24 menunjukkan satu litar elektrik yang mengandungi seuah bateri dengan d.g.e 1.5 V dan

    rintangan dalam 0.5 disambung kepada sebuah perintang2 .

    Diagram 24 /Rajah 24

    What is the reading of the ammeter in the circuit?

    Berapakah bacaan ammeter di dalam litar itu?

    A. 0.3 A

    B. 0.5 A

    C. 0.6 A

    D. 0.8 A

    e.m.f =1.5 V

    r = 0.5

    R = 2

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    39. Diagram 25 shows the arrangement of a solenoid and a moving magnet to produce

    an induced e.m.f in the solenoid.

    Rajah 25 menunjukkan susunan solenoid dan magnet yang bergerak menghasilkan d.g.e aruhan

    dalam solenoid.

    Which action can increase the magnitude of the induced e.m.f?

    Tindakanyang manakah boleh menambahkan magnitude d.g.e aruhan?

    10 ms-1

    A. B.

    C. 10 ms-1

    D. 10 ms-1

    10 ms-1

    Diagram 25 /Rajah 25

    5 ms-1

    10 ms-1

    10 ms-1

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    40. Diagram 26 shows a bar magnet is being pushed into a selonoid.

    Rajah 26 menunjukkan satu magnet bar di tolak ke dalam selonoid.

    Towards which direction will the galvanometer pointer deflect?

    Ke arah manakah jarum galvanometer itu terpesong?

    A. Deflect to the left /Terpesong ke kiri

    B. Deflect to the right /Terpesong ke kanan

    C. Deflect to the left and right /Terpesong ke kiri dan ke kanan

    41. Diagram 27 shows an ideal transformer.

    Rajah 27 menunjukkan litar sebuah transformer unggul.

    What is the value of the output voltage?

    Apakah nilai voltan output?

    A. 7.2 V

    B. 20 V

    C. 200 V

    D. 3125 V

    Diagram 26 /rajah 26

    Diagram 27/rajah 27

    RIGHTLEFT

    24

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    42. Diagram 28 shows the deflection of four compass needles when the compasses are

    placed near a wire. What is the direction of current flow in the wire?

    Rajah 28 menunjukkan pesongan empat jarum kompas yang diletakkan berdekatan dengan

    seutas dawai. Apakah arah aliran arus dalam dawai itu?

    A. Current flows from the top to the bottom. /Arus mengalir dari atas ke bawah

    B. Current flows from the bottom to the top /Arus mengalir dari bawah ke atas

    C. There is no flow of current /Tiada arus mengalir

    43. Diagram 29 shows an electric generator connected to a cathode ray oscilloscope (CRO).

    Rajah 29 menunjukkan sebuah penjana elektrik disambungkan kepada osiloskop sinar kato (OSK).

    Diagram 28 /rajah 28

    To input Y of CRO /ke input Y OSK

    Diagram 29 /Rajah 29

    25

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    Which trace represents the e.m.f. induced in the generator when the coil is rotated at a constant

    speed.

    Surihan yang manakah mewakili d.g.e. yang teraruh dalam penjana itu apabila gegelung diputarkan

    dengan kelajuan seragam.

    44. Diagram 30 shows a trace seen on a Cathode Ray Oscilloscope (CRO) screen.

    Rajah 30 menunjukkan surihan di atas skrin Osiloskop Sinar Katod (OSK).

    Diagram 30 /Rajah 30

    26

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    The Y-gain and the time-base are set at 1.5 volt / division and 5 ms / division respectively.

    What is the frequency of the alternating current power supply that is connected to the C.R.O?

    Gandaan-Y dan dasar masa telah disetkan pada 3 volt / bahagian dan 5 ms / bahagian masing-masing.

    Hitung frekuensi arus ulang alik yang disambungkan ke OSK?

    45. A cathode ray oscilloscope (CRO) is connected to a circuit as shown in Diagram 31.

    Sebuah osiloskop sinar katod (OSK) disambungkan kepada sebuah litar seperti yang ditunjukkan

    dalam Rajah 31.

    Which trace is produced by the Cathode Ray Oscilloscope (CRO) shown in Diagram 31?

    Surihan yang manakah dihasilkan pada skrin Osiloskop Sinar Katod (OSK) yang ditunjukkan dalam

    Rajah 31?

    Frequency / frekuensi

    A. 0.025 HzB. 0.04 Hz

    C. 25 Hz

    D. 40 Hz

    Diagram 31/Rajah 31

    27

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    SULIT 4531/1

    4531/1 SULIT

    46. Which circuit will light up the bulb? /Litar yang manakah menyalakan mentol?

    47. The diagram 32 shows a combination circuit of four logic gates .

    Rajah menunjukkan kombinasi empat gate logik .

    The correct truth table for output X is...

    Jadual kebenaran untuk output X adalah

    A.

    P Q X

    0 0 0

    0 1 0

    1 0 0

    1 1 1

    B.

    P Q X

    0 0 0

    0 1 1

    1 0 0

    1 1 1

    C. P Q X

    0 0 1

    0 1 0

    1 0 1

    1 1 0

    D. P Q X

    0 0 1

    0 1 0

    1 0 0

    1 1 1

    J XP

    Q

    Diagram 32 /Rajah 32

    28

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    SULIT 4531/1

    4531/1 SULIT

    48. Which correctly describe the ionising power of, and radiation in descending order?

    Yang manakah menerangkan kuasa pengionan bagi pancaran , dan mengikut susunanmenurun?

    A. , ,

    B. , ,

    C. , , D. , ,

    49. decays and emits an particle followed by a particle to become more stable.

    The nucleon number and proton number of the daughter nuclide is

    mereput dan memancar zarah diikuti oleh zarah untuk menjadi lebih stabil.Nombor nucleon dan nombor proton bagi nucleus anak ialah

    A.B.C.D.

    50 Which graph best represent the decay curves for the same amount of Rn222

    and I -131 ? (Half-lives of Rn222 and I -131 are 4 days and 8 days respectively)Graf yang manakah terbaik mewakili lengkungan reputan untuk jumlah yang sama Rn222

    and I -131? (Separuh hayat Rn222 and I -131 adalah masing-masing 4 hari dan 8 hari)

    END OF QUESTION PAPER

    KERTAS SOALAN TAMAT

    activity /aktiviti

    time / masa

    activity /aktiviti

    time / masaactivity /aktiviti

    time / masa time / masa

    29

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    NAMA:................................................................... Tingkatan :..............

    4531/2

    Fizik

    Kertas 2

    OGOS 20112 Jam

    BAHAGIAN PENGURUSAN

    SEKOLAH BERASRAMA PENUH DAN SEKOLAH KECEMERLANGAN

    KEMENTERIAN PELAJARAN MALAYSIA

    PEPERIKSAAN PERCUBAAN

    SIJIL PELAJARAN MALAYSIA 2011

    FIZIK

    Kertas 2

    Dua jam tiga puluh minit

    JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU

    Untuk Kegunaan PemeriksaBahagian Soalan Markah

    A

    1

    2

    3

    4

    5

    6

    7

    8

    B9

    10

    C11

    12

    Jumlah Besar

    Kertas ini mengandungi 38 halaman bercetak

    1.

    Tulis nama dan tingkatan anda pada ruang yang disediakan.

    2. Kertas soalan ini adalah dalam dwibahasa.

    3. Calon dibenarkan menjawab keseluruhan atau sebahagiansoalan sama ada dalam bahasa Inggeris atau bahasa Melayu.

    4. Jawapan kepada Bahagian A hendaklah ditulis dalam ruangyang disediakan dalam kertas soalan.

    5. Rajah tidak dilukis mengikut skala kecualidinyatakan.

    6. Markah maksimum yang diperuntukkan ditunjukkan dalamkurungan pada hujung tiap-tiap soalan atau

    7. Penggunaan kalkulator saintifik yang tidak boleh diprogramkanadalah dibenarkan.

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    SULIT 4531/2

    4531/2 SULIT2

    The following information may be useful. The symbols have their usual meaning.

    Maklumat berikut mungkin berfaedah. Simbol-simbol mempunyai makna yang biasa.

    1. a = vu 16. Power, P = energyt time

    2. v2

    = u2

    + 2 as 17. V = IR

    3. s = ut + 1 at2

    18. Power, P = IV

    2 Kuasa

    4. Momentum = mv 19. Ns = VsNp Vp

    5. F = ma 20. Efficiency = Is Vs x 100 %(kecekapan) Ip Vp

    6. Kinetic energy = 1 mv2

    Tenaga kinetik 2 21. 1 = 1 + 1

    f u v

    7. Gravitational potential energy = mgh 22. n = sin i

    Tenaga keupayaan graviti sin r

    8. Elastic potential energy = 1 Fx 23. n = Real depth

    Tenaga keupayaan kenyal 2 Apparent depth

    9. = m 24. = axV D

    10. Pressure, P = hg. 25. Q= ItTekanan

    11. Pressure, P = F 26. E = I (R + r)

    Tekanan A

    27. eV = mv2

    12. Heat, Q = mc

    Haba 28. g = 10 ms-2

    13. PV = Constant (pemalar)

    14. E = m c2

    15. v = f

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    SULIT 4531/2

    4531/2 SULIT3

    Section A

    [60 marks]

    [60 markah]

    Answer all questions in this section.

    Jawab semua soalan dalam bahagian ini.

    1. Diagram 1 shows a voltmeter which has two scales on it.

    Rajah 1 menunjukkan sebuah voltmeter yang mempunyai dua skala di atasnya.

    Diagram 1

    Rajah 1

    (a). State the physical quantity that can be measured by the voltmeter.

    Nyatakan kuantiti fizik yang dapat disukat oleh sebuah voltmeter.

    .

    [1 mark]

    [1 markah]

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    SULIT 4531/2

    4531/2 SULIT4

    (b) (i) What is the reading of the voltmeter when the terminal P and R is

    connected?

    Berapakah bacaan voltmeter bila terminal P dan R disambung ?

    [1 mark]

    [1 markah]

    (ii) What has to be done to the reading obtained in (b) (i) if the voltmeter

    has positive zero error?

    Apakah yang perlu dibuat kepada bacaan yang didapati dalam

    (b) (i) jika voltmeter mempunyai ralat sifar positif?

    [1 mark]

    [1 markah]

    (c) State the accuracy of the reading when the upper scale is used to make

    measurement.

    Nyatakan kejituan bacaan apabila skala atas digunakan untuk membuat

    bacaan.

    [1 mark]

    [1 markah]

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    SULIT 4531/2

    4531/2 SULIT5

    2. Diagram 2.1 shows the arrangement of Youngs double slit experiment. A white light

    source is passed through a blue filter to produce a monochromatic light. Diagram 2.2

    shows the pattern of the fringes formed on the screen when a blue filter is used.

    Rajah 2.1 menunjukkan susunan bagi eksperimen dwicelah Young. Satu sumber

    cahaya putih dilalukan menerusi penapis biru untuk menghasilkan cahaya

    monokromatik. Rajah 2.2 menunjukkan corak pinggir-pinggir yang terbentuk pada

    skrin apabila penapis biru digunakan.

    Diagram 2.1

    Rajah 2.1

    Diagram 2.2

    Rajah 2.2

    (a). What is the meaning of monochromatic light?

    Apakah yang dimaksudkan dengan cahaya monokromatik ?

    [1 mark]

    [1 markah]

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    SULIT 4531/2

    4531/2 SULIT6

    (b). Why bright fringes and dark fringes are observed on the screen as shown on

    Diagram 2.2 ?

    Mengapakah pinggir cerah dan pinggir gelap diperhatikan pada skrin putih

    seperti yang ditunjukkan dalam Rajah 2.2?

    [2 mark]

    [2 markah]

    (c). In the experiment, the screen is placed at the distance of 1.5 m from the

    double-slit. The separation distance between the double-slit is 0.5 mm while

    the total separation of four successive dark fringes is 4.05 mm.

    Calculate the wavelength of the blue light.

    Di dalam eksperimen ini, skrin diletakkan pada jarak 1.5 m dari dwicelah.

    Jarak pemisahan antara dwicelah ialah 0.5 mm sementara jumlah jarak

    pemisahan bagi empat pinggir gelap berturutan ialah 4.05 mm.

    Hitungkan panjang gelombang bagi cahaya biru tersebut.

    [2 marks]

    [2 markah]

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    SULIT 4531/2

    4531/2 SULIT7

    3 Diagram 3 shows the decay series of Radon-222.

    Rajah 3 menunjukkan siri reputan bagi Radon-222.

    Diagram 3Rajah 3

    (a). What is the meaning of nucleon number?

    Apakah yang dimaksudkan dengan nombor nukleon?

    ..............................................................................................................................

    [1 mark]

    [1 markah]

    (b). Write an equation to show the decay of Rn-222 to Po-218.

    Tuliskan satu persamaan untuk menunjukkan reputan Rn-222 kepada Po-218.

    [2 marks]

    [2 markah]

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    SULIT 4531/2

    4531/2 SULIT8

    (c). Based on Diagram 3, state the most stable nuclide.

    Berdasarkan Rajah 3, nyatakan nuklide yang paling stabil.

    ..........................................................................................................................

    [1 mark]

    [1 markah]

    (d). Determine the number of alpha particles and beta particles produced in the

    decay.

    Tentukan bilangan zarah alfa dan zarah beta yang dihasilkan dalam reputan

    tersebut.

    .............................................................................................................................

    [2 marks]

    [2 markah]

    4. Diagram 4.1 shows a mirror that is fixed in certain area in a mini market. The purpose

    of the mirror is to help the owner of the mini market to monitor their customer.

    Rajah 4.1 menunjukkan sebuah cermin yang di pasang pada tempat tertentu di

    sebuah pasar mini. Tujuan cermin ini dipasang adalah untuk membantu pemilik

    pasar mini mengawasi pengguna.

    Diagram 4.1

    Rajah 4.1

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    SULIT 4531/2

    4531/2 SULIT9

    (a). State the type of mirror used.

    Nyatakan jenis cermin yang digunakan.

    ..............................................................................................................................

    [1 mark]

    [1 markah]

    (b). What is the advantage of the mirror as mentioned in (a) compare to plane

    mirror?

    Apakah kelebihan cermin ini seperti yang dinyatakan di (a) berbanding

    cermin satah?

    ..............................................................................................................................

    [1 mark]

    [1 markah]

    (c). In Diagram 4.2, C is the centre of curvature and F is the focal point of the

    mirror.

    Pada Rajah 4.2, C ialah pusat kelengkungan dan F ialah titik fokus suatu

    cermin.

    Diagram 4.2

    Rajah 4.2

    (i). In Diagram 4.2 , draw a ray diagram to show the position of the image.

    Pada Rajah 4.2 lukiskan satu rajah sinar utnuk menunjukkan

    kedudukan imej.

    [3 marks]

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    SULIT 4531/2

    4531/2 SULIT10

    [3 markah]

    (ii). State the characteristics of the image formed.

    Nyatakan ciri-ciri imej yang terbentuk.

    ..................................................................................................................

    [1 mark]

    [1 markah]

    (d) What happens to the size of image when the curvature of convex mirror is

    decreased?

    Apakah yang akan berlaku kepada saiz imej apabila kelengkungan kanta

    cembung dikurangkan?

    ..............................................................................................................................

    [1 mark]

    [1 markah]

    5. Diagram 5.1 and Diagram 5.2 show an experiment to study the relationship between

    pressure and volume of air trapped in an air-tight container.

    Rajah 5.1 dan Rajah 5.2 menunjukkan satu eksperimen untuk mengkaji hubungan

    antara tekanan dan isipadu udara yang terperangkap di dalam satu bekas kedap

    udara.

    Diagram 5.1 Diagram 5.2

    Rajah 5.1 Rajah 5.2

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    SULIT 4531/2

    4531/2 SULIT11

    (a) State the function of Bourdon Gauge.Nyatakan fungsi Tolok Bourdon.

    .....

    [1 mark]

    [1 markah]

    (b) Based on Diagram 5.1 and Diagram 5.2,

    Berdasarkan Rajah 5.1 dan Rajah 5.2,

    (i) compare the volume of the gas in the air- tight containerbandingkan isipadu gas dalam bekas kedap udara

    [1 mark]

    [1 markah]

    (ii) the reading of Bourdon gauge

    bacaan Tolok Bourdon

    .

    [1 mark]

    [1 markah]

    (iii) temperature of the gas in the airtight container

    suhu gas dalam bekas kedap udara itu

    .

    [1 mark]

    [1 markah]

    (c) Using your answer in b(i) and b(ii) state a relationship between volume of gas

    and the reading of Bourdon Gauge.

    Menggunakan jawapan anda di b(i) dan b(ii) nyatakan satu hubungan antara

    isipadu gas dengan bacaan Tolok Bourdon.

    .

    1 mark]

    [1 markah]

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    SULIT 4531/2

    4531/2 SULIT12

    (d) Name a physics law involved in the above observation

    Namakan satu hukum fizik yang terlibat dalam pemerhatian di atas.

    .

    [1 mark]

    [1 markah]

    (e) Using The Kinetic Molecular Theory explain your answer in (c) above.

    Menggunakan teori kinetic molekul, terangkan jawapan anda di (c) di atas.

    [2 marks]

    [2 markah]

    6. Diagram 6.1 and Diagram 6.2 show identical copper rods placed on bare copper

    wires in the magnetic field.

    Rajah 6.1 dan Rajah 6.2 menunjukkan rod kuprum yang serupa diletakkan di atas

    dawai kuprum tidak bertebat di dalam medan magnet.

    Diagram 6.1

    Rajah 6.1

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    SULIT 4531/2

    4531/2 SULIT13

    Diagram 6.2

    Rajah 6.2

    When the switch is on, the pointer of the ammeter deflects and the copper rod is

    moved to the final position as shown in the diagrams.

    Apabila suis dihidupkan, jarum ammeter terpesong dan rod kuprum digerakkan

    ke kedudukan akhir seperti yang ditunjukkan dalam rajah-rajah tersebut.

    (a) What is the meaning of magnetic field?

    Apakah yang dimaksudkan dengan medan magnet?

    .......................................................................................................................

    [1 mark]

    [1 markah]

    (b) Observe Diagram 6.1 and Diagram 6.2.

    Perhatikan Rajah 6.1 dan Rajah 6.2.

    (i) Compare the deflection of the pointer of the ammeters.

    Bandingkan pesongan jarum bagi kedua-dua ammeter itu.

    ..................................................................................................................

    [1 mark][1 markah]

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    SULIT 4531/2

    4531/2 SULIT14

    (ii) Compare the final position of the copper rods.

    Bandingkan kedudukan akhir bagi kedua-dua rod kuprum itu.

    .................................................................................................................

    [1 mark]

    [1 markah]

    (c) Relate the final position of the copper rod to the magnitude of electric current.

    Hubungkaitkan kedudukan akhir rod kuprum dengan magnitud arus elektrik.

    ..............................................................................................................................

    [1 mark]

    [1 markah]

    (d) (i) Explain why the copper rods moved in the direction as shown in

    diagrams when the switch is on.

    ................................................................................................................

    .................................................................................................................

    [2 marks]

    [2 markah]

    (ii) Name the rule used to determine the direction of the copper rod.

    Namakan petua yang digunakan untuk menentukan arah rod kuprum

    itu.

    ..................................................................................................................

    [1 mark]

    [1 markah]

    (e) State one other method that can moved the rod further.

    Nyatakan satu kaedah lain yang boleh menggerakkan rod dengan lebih jauh

    lagi.

    ...........................................................................................................................

    [1 mark]

    [1 markah]

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    SULIT 4531/2

    4531/2 SULIT15

    7. Diagram 7.1 and Diagram 7.2 show circuits consists of 3three identical bulbs

    arranged in two different ways. Each bulb has a resistance of4 .

    Rajah 7.1 dan Rajah 7.2 menunjukkan dua litar yang mengandungi tiga mentol yang

    sama jenis disusun dalam dua cara yang berbeza. Setiap mentol mempunyai

    rintangan 4.

    Diagram 7.1 Diagram 7.2

    Rajah 7.1 Rajah 7.2

    (a). Name the circuit arrangement in Diagram 7.1Namakan susunan litar pada Rajah 7.1

    ..............................................................................................................................

    [1 mark]

    [1 markah]

    (b) (i) Calculate the effective resistance in each diagram.

    Kira rintangan berkesan bagi setiap rajah.

    [3 mark]

    [3 markah]

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    SULIT 4531/2

    4531/2 SULIT16

    (ii) State which circuit will produce greater brightness of the bulb

    Nyatakan litar manakah akan menghasilkan kecerahan mentol yang

    lebih cerah.

    .................................................................................................................

    [1 marks]

    [1 markah]

    (iii) Give two reasons for your answer in (b) (ii)

    Beri dua sebab untuk jawapan anda dalam (b) (ii)

    ................................................................................................................

    .................................................................................................................

    [2 marks]

    [2 markah]

    (c) Diagram 7.3 shows an illuminating torch light.

    Rajah 7.3 menunjukkan sebuah lampu suluh yang mengeluarkan cahaya.

    Diagram 7.3

    Rajah 7.3

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    SULIT 4531/2

    4531/2 SULIT17

    It is found that the torch light is not bright enough even when new cells are

    used. A modification is required to make it light brighter.

    Cahaya daripada lampu suluh ini tidak cukup terang walaupun bateri yang

    baru digunakan. Satu pengubahsuaian diperlukan untuk menjadikannya

    bercahaya lebih terang.

    Suggest the modification that needs to be done through these aspects:

    Cadangkan pengubahsuaian yang perlu dibuat melalui aspek-aspek berikut:

    (i) Number of cells

    Bilangan bateri

    .................................................................................................................

    [1 marks]

    [1 markah]

    (ii) The way the cells are arranged

    Cara susunan bateri

    .................................................................................................................

    [1 mark]

    [1 markah]

    (iii) Internal resistance of the cell

    Rintangan dalam bateri

    .................................................................................................................

    [1 mark]

    [1 markah]

    Give a reason

    Berikan satu sebab

    .................................................................................................................

    [1 mark]

    [1 markah]

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    SULIT 4531/2

    4531/2 SULIT18

    8 Table 8 shows three circuits used to switch on a spotlight 240 V, 1000 W

    automatically when it is dark. The resistance of the light dependent resistor (LDR),X

    varies from 0.5 k to 6.0 k as the light intensity changes. The transistor functions

    when the potential difference across BC is more than 2 V.

    Jadual 8 menunjukkan tiga litar yang digunakan untuk menghidupkan sebuah lampu

    sorot 240 V, 1000 W secara outomatik apabila waktu gelap. Rintangan bagi perintang

    peka cahaya (PPC),X berubah daripada 0.5 k hingga 6.0 k apabila keamatan

    cahaya berubah. Transistor berfungsi apabila beza keupayaan merentasi BC melebihi

    2 V.

    Circuit J

    Litar J

    Circuit K

    Litar K

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    SULIT 4531/2

    4531/2 SULIT19

    Circuit L

    Litar L

    Table 8

    Jadual 8

    (a) (i) What is the function of resistor R?

    Apakah fungsi perintang R?

    . .................................................................................................................

    [1 mark]

    [1 markah]

    (ii) Based on circuit J in Table 8, how does the potential difference across

    BC changes with resistance,X?

    Berdasarkan Litar J dalam Jadual 8, bagaimanakah beza keupayaan

    merentasi BC berubah dengan rintangan,X?

    ...................................................................................................................

    [1 mark]

    [1 markah]

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    (b) Based on Table 8 :

    Berdasarkan Jadual 8:

    (i) Calculate the potential difference across BC for circuit J and circuit Kduring night time when it is dark.

    Hitungkan beza keupayaan merentasi BC bagi litar J dan litar K

    semasa waktu malam apabila gelap.

    Circuit J

    Litar J

    [ 2 marks]

    [2 markah]

    Circuit K

    Litar K

    [2 marks]

    [2 markah]

    (ii) Which is the most position for the light dependant resistor,LDR?

    Tick the correct answer

    Kedudukan manakah paling sesuai untuk perintang peka cahaya,PPC?

    Tandakan jawapan yang betul.

    Across AB

    Merentasi AB

    Across BC

    Merentasi BC

    [1 mark]

    [1 markah]

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    (c) Based on Table 8:

    Berdasarkan Jadual 8:

    (i) State the suitable type of the transistor used.Nyatakan jenis transistor yang sesuai digunakan.

    ..................................................................................................................

    [1 mark]

    [1 markah]

    Reason

    Sebab

    .

    ..................................................................................................................

    [1 markah]

    [1 markah]

    (ii) State the additional device required to light up the spotlight.Nyatakan peranti tambahan yang diperlukan untuk menghidupkan

    lampu sorot.

    ...................................................................................................................

    [1 mark]

    [1 markah]

    Reason

    Sebab

    ..................................................................................................................

    [1 mark]

    [1 markah]

    (d) Determine the most suitable circuit to switch on the spotlight when it is dark.

    Tentukan litar yang paling sesuai untuk menghidupkan lampu sorot apabila

    waktu gelap.

    ..............................................................................................................................

    [1 mark]

    [1 markah]

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    Bahagian B

    [20 marks]

    [20 markah]

    Answer any one question from this section.

    Jawab mana-manasatu soalan daripada bahagian ini.

    9. Diagram 9.1 shows air was trapped in a beaker at the surface of water. The beaker is

    then pushed into the water until it sinks at a depth, h, as shown in Diagram 9.2.

    Rajah 9.1 menunjukkan udara terperangkap di dalam sebuah bikar pada permukaan

    air. Bikar itu kemudiannya ditolak masuk ke dalam air sehingga kepada kedalaman, h,

    seperti yang ditunjukkan pada Rajah 9.2.

    Diagram 9.1 Diagram 9.2

    Rajah 9.1 Rajah 9.2

    (a). Name the type of pressure that acts on the surface of water.

    Namakan jenis tekanan yang bertindak pada permukaan air.

    [1 mark]

    [1 markah]

    (b). (i) Using Diagram 9.1 and Diagram 9.2, compare the volume of trapped

    air in the beaker, the mass of trapped air in the beaker and the

    pressure of trapped air in the beaker.

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    Menggunakan Rajah 9.1 dan Rajah 9.2, bandingkan isipadu udara

    yang terperangkap di dalam bikar, jisim udara yang terperangkap

    dalam bikar dan tekanan udara dalam bikar.

    (ii) Relate the volume of trapped air in the beaker and its pressure todeduce a relevant physics concept. [5 marks]

    Hubungkaitkan di antara isipadu udara yang terperangkap dengan

    tekanannya untuk menyimpulkan satu konsep fizik yang relevan.

    [ 5 markah]

    (c) Based on Diagram 9.2, state the motion of the beaker when the pushing force

    is removed. Explain your answer. [4 marks]

    Berdasarkan Rajah 9.2, nyatakan jenis gerakan bikar apabila daya yang

    menolaknya ke bawah dilepaskan. Terangkan jawapan anda. [4 markah]

    (d). The manager of a carnival near your home seeks your advice on designing and

    handling a hot air balloon. The balloon should be able to rise to about the

    height of a five-storey building, carry up to three people and can be brought

    down to the same spot after a certain time.

    Explain your suggestion taking into account :

    (i) the material and size of balloon

    (ii) the equipment required to raise the balloon

    (iii) safety aspects,(iv) the best times in a day to launch the balloon

    Pengurus sebuah karnival berdekatan rumah anda meminta khidmat nasihat

    anda untuk mereka bentuk dan mengendalikan sebuah belon udara panas.

    Belon udara panas itu mestilah dapat naik sehingga ke ketinggian bangunan

    lima tingkat, membawa tiga orang dan boleh di bawa turun semula ke tempat

    permulaan selepas suatu masa tertentu.

    Setiap cadangan anda hendaklah diterangkan dengan mengambil kira:

    (i) bahan dan saiz belon

    (ii) peralatan yang diperlukan untuk menaikkan belon

    (iii) aspek keselamatan,

    (iv) masa yang terbaik untuk menaikkan belon udara panas itu.

    [10 marks]

    [10 markah]

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    10. Diagram 10.1 and Diagram 10.2 show the decay graphs of two difference radioactive

    sources .

    Rajah 10.1 dan Rajah 10.2 menunjukkan graf reputan bagi dua sumber radioaktif

    yang berlainan.

    Diagram 10.1

    Rajah 10.1

    Diagram 10.2

    Rajah 10.2

    80

    60

    40

    20

    1 2 30

    Source B

    Activity/cou

    ntspersecond

    Time / year

    80

    60

    40

    20

    Activity/countspersecond

    10 20 300

    Source A

    Time / year

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    (a). What is the meaning of radioactivity ?

    Apakah yang dimaksudkan dengan keradioaktifan?

    [1 mark]

    [1 markah]

    (b). Using Diagram 10.1 and Diagram 10.2, compare the initial activity of the

    sources, the time interval for the activity to be halved and the rate of decay of

    the radioactives. [3 marks]

    Menggunakan Rajah 10.1 dan Rajah 10.2, bandingkan aktiviti awal sumber-

    sumber itu, sela masa untuk aktiviti menjadi separuh dan kadar penyusutan

    radioaktif-radioaktif itu. [3 markah]

    (c). State the relationship between:

    Nyatakan hubungan antara:

    (i) the rate of decay of the radioactives andthe time of interval for the

    radioactive to be halved.

    Kadar penyusutan radioaktif dan sela masa untuk radioaktif menjadi

    separuh.

    (ii) half life and the rate of decay of the radioactives.

    Separuh hayat dan kadar penyusutan radioaktif

    [2 marks]

    [2 markah]

    (d) Uranium-238 decays to Thorium (Th) by emitting an alpha particle.

    Uranium-238 mereput kepada Thorium dengan memancarkan satu zarah

    alfa.

    (i) Write the nuclear equation expressing the alpha decay of U23892

    Tuliskan persamaan nuklear bagi pereputan alfa bagi U23892

    [2 marks]

    [2 markah]

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    (ii) Whathappens to the proton number and neutron number of U-238

    after the decay process? [2 marks]

    Apakah yang berlaku kepada nombor proton dan nombor neutron

    selepas proses penyusutan ? [2 markah]

    Diagram 10.3

    Rajah 10.3

    (e). Diagram 10.3 shows a radioactive source is handled by a scientist.

    The method shown is not safe. Suggest and explain;

    Rajah 10.3 menunjukkan bahan radioaktif di kendalikan oleh seorang ahli

    sains.

    Kaedah yang ditunjukkan tidak selamat. Cadang dan terangkan;

    (i). The equipment to be used in handling a radioactive source.

    Peralatan yang perlu digunakan dalam mengendalikan bahan

    radioaktif.

    (ii) Modifications to the storing method to ensure safe keeping of the

    radioactive source.

    Pengubahsuaian cara penyimpanan untuk mempastikan penyimpanan

    sumber radioaktif adalah selamat.

    (iii) Other precautions that need to be taken when handling a radioactive

    source.

    Langkah berjaga-jaga lain yang perlu diambil semasa mengendalikan

    sumber radioaktif.

    [ 10 marks ][10markah]

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    Bahagian C

    [20 marks]

    [20 markah]

    Answer any one question from this section.

    Jawab mana-manasatu soalan daripada bahagian ini.

    11. Diagram 11.1 shows a plasticine ball being dropped onto a metal block. The

    plasticine ball changes its shape after the impact.

    Rajah 11.1 menunjukkan sebiji bola plastisin dijatuhkan ke atas sebuah bongkah

    logam. Bola plastisin berubah bentuk selepas hentaman.

    Diagram 11.1

    Rajah 11.1

    (a) (i) Name the force involved during the impact. [1mark]Namakan daya yang terlibat semasa hentaman. [1 markah]

    (ii) Explain why the plasticine ball changes its shape after the impact..[3 marks]

    Terangkan kenapa bola plastisin berubah bentuk selepas hentaman.

    [3 markah]

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    (iii) Give one suggestion to avoid the plasticine ball from changing itsshape when dropped from the same height. [ 1 mark]

    Berisatu cadangan bagaimana untuk mengelak bola plastisin

    daripada berubah bentuk apabila dijatuhkan pada ketinggian yang

    sama. [1 markah]

    (b) Diagram 11.2 shows four arrangements of piling systems P, Q, R and S thatbeing used to insert a pile into the ground.

    Rajah 11.2 menunjukkan empat susunan sistem cerucuk P. Q, R dan S yang

    digunakan untuk memasukkan suatu cerucuk ke dalam tanah.

    Arrangement of

    piling system P

    Susunan sistem

    cerucuk P

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    Arrangement of

    piling system Q

    Susunan sistem

    cerucuk Q

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    Arrangement of

    piling system R

    Susunan sistem

    cerucuk R

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    Arrangement of

    piling system S

    Susunan sistem

    cerucuk S

    Diagram 11.2

    Rajah 11.2

    Study the specification of the four arrangements of piling system based on the

    following aspects:Kaji spesifikasi keempat-empat susunan sistem cerucuk berdasarkan aspek-aspek

    berikut:

    (i) mass of the pile driver used to push the pile into the ground.[2 marks]

    Jisim pelantak cerucuk yang digunakan untuk menolak cerucuk ke

    dalam tanah.

    [2 markah]

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    (ii) Height of the pile driver [2 marks]Ketinggian pelantak cerucuk [2 markah]

    (iii) Pile material. [2 marks]Bahan cerucuk. [2 markah]

    (iv) Shape at the base of the pile. [2 marks]Bentuk pada dasar cerucuk [2 markah]

    Explain the suitability of each aspect and then determine the most suitable

    arrangement to be used to insert the pile effectively.

    Give reasons for your choice. [2 marks]

    Terangkan kesesuaian setiap aspek dan seterusnya tentukan sistem cerucuk

    yang paling sesuai digunakan untuk memasukkan cerucuk dengan cekap.

    Beri sebab untuk pilihan anda. [2 markah]

    (c) A metal block with mass 50 kg is being dropped onto a pile to build a tallbuilding. The height of the metal block from the pile is 20 m. Calculate:

    Satu bongkah logam berjisim 50 kg dijatuhkan keatas satu cerucuk untuk

    membina sebuah bangunan tinggi. Tinggi blok logam dari cerucuk ialah 20 m.

    Hitungkan:

    (i) Weight of the metal block. [1 mark]Berat bongkah logam. [1 markah]

    (ii) Velocity of the metal block just before it hits the pile.[2 marks]

    Halaju bongkah logam sejurus sebelum menghentam cerucuk.

    [2 markah]

    (iii) Impulsive force acted on the pile if the time impact is 0.5 s.[2 marks]

    Daya impuls yang bertindak ke atas cerucuk sekiranya masa hentaman

    ialah 0.5 s. [2 markah]

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    12. Diagram 12.1 shows a deflection of a centre zero galvanometer pointer when a

    magnet is pushed into a coil. The deflection indicates that an induced current is

    produced in the coil.

    Rajah 12.1 menunjukkan pesongan jarum penunjuk sebuah galvanometer berpusat

    sifar apabila sebuah magnet ditolak masuk ke dalam satu gelung. Pesongan ini

    menunjukkan satu arus aruhan terhasil di dalam gelung itu.

    Diagram 12.1

    Rajah 12.1

    (a) (i) Name the concept involved in producing the induced current.

    [1 mark]Namakan konsep yang terlibat dalam menghasilkan arus aruhan itu.

    [ 1 markah]

    (ii). The concept involved in 12(a) (i) is also used for a transformer.

    Explain the working principle of a transformer. [4 marks]

    Konsep yang terlibat dalam 12(a) (i) juga digunakan bagi sebuah

    transformer.

    Terangkan prinsip kerja sebuah transformer. [4 markah]

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    (b) Diagram 12.2 shows four types of moving coil ammeter, R, S, T and U to

    measure small direct current.

    Rajah 12.2 menunjukkan empat jenis ammeter gelung bergerak, R, S, T dan

    U untuk mengukur arus terus yang kecil.

    You are required to determine the most suitable moving coil ammeter to

    measure the small direct current effectively.

    Anda dikehendaki menentukan ammeter gelung bergerak yang paling sesuai

    untuk mengukur arus terus yang kecil dengan berkesan.

    Moving

    coil

    ammeter R

    Ammeter

    gegelung

    bergerak R

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    Moving

    coil

    ammeter S

    Ammeter

    gegelung

    bergerak S

    Moving

    coil

    ammeter T

    Ammeter

    gegelung

    bergerak T

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    Moving

    coil

    ammeter U

    Ammeter

    gegelung

    bergerak U

    Diagram 12.2

    Rajah 12.2

    You are required to determine the most suitable moving coil ammeter to measuresmall direct current effectively.

    Anda dikehendaki menentukan ammeter gelung bergerak yang paling sesuai untuk

    mengukur arus terus yang kecil dengan berkesan.

    Study the specification of all the four moving coil ammeters based on the following

    aspects:

    Kaji spesifikasi keempat-empat ammeter gelung bergerak itu berdasarkan aspek-

    aspek berikut:

    (i). The shape of the permanent magnet and core [2 marks]

    Bentuk magnet kekal dan teras [2 markah]

    (ii). The material of the core [2 marks]

    Bahan teras [2 markah]

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    (iii) The stiffness of the hair spring [ 2 marks]

    Ketegaran spring rerambut [2 markah]

    (iv) The type of scale of the ammeter [2 marks]Jenis skala pada ammeter [2 markah]

    Explain the suitability of each aspect and then determine the most suitable moving

    coil ammeter. Give a reason for your choice. [2 marks]

    Terangkan kesesuaian setiap aspek dan seterusnya tentukan ammeter gelung

    bergerak yang paling sesuai. Berikan sebab untuk pilihan anda. [2 markah]

    (c) Diagram 12.3 shows a U-shaped soft iron core is wound with insulated

    copper wire PQ and RS. An a.c. voltage of 240 V is connected at the end of

    PQ and a bulb 12V ,60W is connected at the end RS.

    Rajah 12.3 menunjukkan teras besi lembut berbentuk U dililitkan dengan

    dawai kuprum bertebat PQ dan RS. Satu voltan a.\u 240V disambungkan pada

    hujung dawai PQ dan mentol 12V, 60W disambungkan pada hujung RS.

    Diagram 12.3

    Rajah 12.3

    (i) If the bulb lights up with normal brightness , determine the ratio of the

    number of turns in the coil PQ to the number of turns in the coil RS.

    Jika mentol menyala pada kecerahan normal, tentukan nisbah bilangan

    lilitan gegelung PQ kepada bilangan lilitan gegelung RS.

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    [2 marks]

    [2 markah]

    (ii) Calculate the output current flowing.Hitungkan arus output yang mengalir.

    [ 1 mark]

    [1 markah]

    (iii) Calculate the input current if the efficiency of the transformer is 80%.

    Hitungkan arus input jika kecekapan transformer itu adalah 80%.

    [ 2 marks]

    [2markah]

    END OF QUESTION PAPER

    KERTAS SOALAN TAMAT

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    [Lihat sebelah

    NAMA:.................................................... Tingkatan :..............................

    4531/3

    Fizik

    Kertas 3

    Ogos2011

    1 jam

    BAHAGIAN PENGURUSAN

    SEKOLAH BERASRAMA PENUH DAN SEKOLAH KECEMERLANGAN

    KEMENTERIAN PELAJARAN MALAYSIA

    PEPERIKSAAN PERCUBAAN SPM 2011

    FIZIK

    KERTAS 3

    Satu jam tiga puluh minit

    JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU

    Kertas soalan ini mengandungi 12 halaman bercetak

    Kegunaan Pemeriksa

    Bahagian Soalan MarkahPenuh

    Markah

    A1 16

    2 12

    B3 12

    4 12

    JUMLAH

    1. Kertas soalan ini mengandungi dua bahagian :

    Bahagian A dan Bahagian B.

    2. Jawab semua soalan dalam Bahagian A.Tuliskan jawapan bagi Bahagian A dalam

    ruang yang disediakan dalam kertas soalan.

    3. Jawabsatu soalan daripadaBahagian B.

    Tuliskan jawapan Bahagian Bpadaruangan

    yang disediakan..

    Jawab Bahagian Bdengan lebih terperinci.

    Jawapan mestilah jelas dan logik.

    4. Tunjukkan kerja mengira, ini membantu anda

    mendapat markah.

    5 Gambarajah yang mengiringi soalan tidak

    dilukis mengikut skala kecuali dinyatakan.

    6. Markah yang diperuntukkan bagi setiap soalan

    atau ceraian soalan ditunjukkan dalamkurungan.

    7 Anda dibenarkan menggunakan kalkulator

    saintifik yang tidak boleh di programkan.

    8 Masa yang dicadangkan untuk menjawab

    Bahagian ialah 60 minit dan Bahagian B

    ialah 30 minit.

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    [Lihat sebelah

    Section A

    BahagianA

    [28 marks]

    [28 markah]

    Answer all questions.

    Jawabsemua soalan.

    1. A student carries out an experiment to investigate the relationship between the volume

    and the pressure of a gas. The set-up of the apparatus is as shown in Diagram 1.1. The

    volume of air, V is recorded when a load of mass, m is placed on the top of the

    piston.

    Seorang pelajar menjalankan eksperimen untuk menyiasat hubungan antara isipadu

    dan tekanan bagi suatu gas. Susunan radas adalah seperti Rajah 1.1. Isipadu udara,

    V dicatatkan apabila beban berjisim, m diletakkan di atas omboh.

    Load

    Beban

    Piston

    Omboh

    Volume of air

    Isipadu udara

    Diagram 1.1

    Rajah 1.1

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    [Lihat sebelah

    The experiment is started with m = 0.5 kg and the actual corresponding reading of

    volume of the air is shown in Diagram 1.2 on page 3 .

    The procedure above is repeated with load of mass, m = 1.0 kg, 1.5 kg, 2.0 kg and

    2.5 kg. The actual corresponding reading of volume of air, V, are shown in Diagram

    1.3, 1.4, 1.5 and 1.6 on page 4 and 5 .Eksperimen dimulakan dengan jisim, m= 0.5 kg dan bacaan sepadan isipadu udara

    ditunjukkan dalam Rajah 1.2 pada halaman 3.

    Langkah di atas diulang dengan jisim, m = 1.0 kg, 1.5 kg, 2.0 kg dan 2.5 kg. Nilai

    sepadan isipadu udara ditunjukkan dalam Rajah 1.3, 1,4, 1.5 dan 1.6 pada halaman

    4 dan 5 .

    Diagram 1.2

    Rajah 1.2

    Diagram 1.3

    Rajah 1.3

    Diagram 1.4

    Rajah 1.4

    m = 0.5 kg,

    V = ..cm3

    m = 1.0 kg,

    V = .. cm3

    m = 1.5 kg,

    V = . cm3

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    [Lihat sebelah

    (a) For the experiment described on page 3, identify;

    Bagi eksperimen yang diterangkan pada halaman 3 ;

    (i) The manipulated variable,

    Pemboleh ubah dimanipulasi,

    ..

    [1 mark]

    [1 markah]

    (ii) The responding variable,

    Pemboleh ubah bergerak balas,

    ..

    [1 mark]

    [1 markah]

    Diagram 1.5

    Rajah 1.5

    Diagram 1.6

    Rajah 1.6

    m = 2.0 kg,

    V = cm3

    m = 2.5 kg,

    V = . cm3

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    [Lihat sebelah

    (iii) The constant variable.

    Pemboleh ubah dimalarkan,

    ..

    [1 mark]

    [1 markah]

    (b) Based on Diagram 1.2, 1.3, 1.4, 1.5 and 1.6 on page 4 and 5 , measure the

    volume of air, V when the load is placed on the piston, m = 0.5 kg, 1.0 kg,

    1.5 kg, 2.0 kg and 2.5 kg.

    Tabulate your data for all the values of m, V and in the space below.

    Berdasarkan Rajah 1.2, 1.3, 1.4, 1.5, dan 1.6 pada halaman 4 dan 5, ukur

    isipadu udara V bila beban diletakkan di atas omboh, m = 0.5 kg, 1.0 kg,

    1.5 kg, 2.0 kg dan 2.5 kg. Jadualkan keputusan anda untuk semua nilai m, V dan dalam ruang

    di bawah.

    [7 marks]

    [7 markah]

    (c) On the graph paper on page 6, draw a graph of against m.

    Pada kertas graf di halaman 6 , lukis graf melawan m.

    [5 marks]

    [5 markah]

    (d) Based on your graph in 1( c ) , state the relationship between and m.

    Berdasarkan graf anda dalam 1( c ), nyatakan hubungan antara dan m.

    ....

    [1 mark]

    [1 markah]

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    Graph of against m

    Graf melawan m

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    2. A student carries out an experiment to investigate the relationship between the

    potential difference across a dry cell, V and the current flows, I.

    He used an ammeter, a rheostat, resistor, P and a voltmeter which are connected as

    shown in Diagram 2.1.Seorang pelajar menjalankan suatu eksperimen untuk menyiasat hubungan antara

    beza keupayaan yang merentasi bateri, V dengan arus yang mengalir, I .

    Pelajar itu menggunakan sebuah ammeter, reostat , perintang P dan voltmeter yang

    disambungkan seperti yang ditunjukkan dalam Rajah 2.1

    Diagram 2.1

    Rajah 2.1

    The results of the experiment is shown in graph V against I as shown in Diagram 2.2

    on page 8.

    Keputusan eksperimen ditunjukkan dalam graf V melawan I seperti yang

    ditunjukkan dalam Rajah 2.2 pada halaman 8.

    (a) Based on the graph in Diagram 2.2 ,

    Berdasarkan graf pada Rajah 2.2,

    (i) What will happen to the value of V , as I increases?

    Apakah yang akan berlaku pada nilai V, jika I bertambah ?

    ..

    [1 mark]

    [1 markah]

    (ii) Determine the value of potential different, V when the current,

    I = 0.00 A

    Show on the graph , how you determine the value ofV.

    Tentukan nilai beza keupayaan, V apabila nilai arus, I = 0.00 A

    Tunjukkan di atas graf bagaimana anda menentukan nilai V

    V = ...

    [2 marks]

    P

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    [2 markah]

    V (V)

    Graph of V against I

    Graf V melawan I

    I (A)

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    Diagram 2.2

    Rajah 2.2

    (iii) Name the physical quantity that represents the value in 2a(ii).

    Namakan kuantiti fizik yang mewakili nilai pada jawapan 2a(ii).

    ...............[1 mark]

    [1 markah]

    (b) The internal resistance, rof the dry cell is given by equation

    r = - m

    where m is the gradient of the graph.

    Rintangan dalaman, r bagi sel kering itu diberi melalui persamaan

    r = - m

    dimana m adalah kecerunan bagi graf itu.

    (i) Calculate the gradient, m, of the graph.

    Show on the graph how you calculate m.

    Hitung kecerunan, m, bagi graf itu.

    Tunjukkan pada graf itu bagaimana anda menghitung m.

    m =.

    [ 3 marks][3 markah]

    (ii) Determine the value of r.

    Tentukan nilai r.

    r =

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    [1 mark]

    [1 markah]

    (c) (i) The electromotive force (e.m.f), E of the dry cell is given by the

    formula:

    Daya gerak elektrik (d.g.e), E bagi sel kering diberi oleh rumus:

    E = V + Ir ;

    where V is the potential difference across the external resistors .

    di mana V adalah beza keupayaan merentasi perintang luar

    perintang,

    Using the formula and the values of E and r in 2a(ii) and 2b(ii),

    calculate the value of V when I = 0.90 A.

    Menggunakan rumus dan nilai bagi E dan r dalam 2a(ii) dan 2b(ii),

    hitung nilai bagi VapabilaI = 0.90 A.

    [2 marks]

    [2 markah]

    (ii) The resistance of P is given as R = .

    Calculate the value of R when I = 0.90 A.

    Rintangan bagi P diberi oleh persamaan R =

    Hitung nilai R apabila I = 0.90 A

    [1 mark]

    [1markah]

    d) State one precaution that should be taken to improve the accuracy of the

    readings in this experiment.

    Nyatakansatu langkah berjaga-jaga yang perlu diambil untuk memperbaiki

    ketepatan bacaan dalam eksperimen ini.

    ..............................................................................................................................

    [1 mark]

    [1markah]

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    Section B

    BahagianB

    [12 marks]

    [12 markah]

    Answer any one question from this section.

    Jawab mana-manasatu soalan daripada bahagian ini.

    3. Diagram 3.1 shows the light from the wall producing a sharp image on the screen

    after passing through a glass filled with water.

    Rajah 3.1 menunjukkan cahaya lampu dinding menghasilkan imej yang tajam

    pada satu skrin apabila melalui sebuah gelas berisi air.

    Diagram 3.1

    Rajah 3.1

    Diagram 3.2 shows the light from a table lamp is passing through the same glass filled

    with the same amount of water. The lamp is not lighted.

    The sharp image is only obtained when the white screen is moved further from the

    glass.

    Rajah 3.2 menunjukkan cahaya daripada sebuah lampu meja sedang melalui gelas

    yang sama berisi jumlah air yang sama. Lampu dinding tidak menyala.

    Imej yang tajam hanya diperolehi apabila skrin digerakkan lebih jauh daripada

    gelas.

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    Diagram 3.2

    Rajah 3.2

    Based on the information and observation;

    Berdasarkan maklumat dan pemerhatian itu;

    (a) State one suitable inference. [1 mark]

    Nyatakansatu inferens yang sesuai. [1 markah]

    (b) State one suitable hypothesis. [1 mark]

    Nyatakansatu hipotesis yang sesuai. [1 markah]

    (c) With the use of apparatus such as a convex lens, bulb, screen and other

    apparatus, describe one experiment to investigate the hypothesis state in 3(b).

    Dengan menggunakan alat radas seperti kanta cembung, mentol, skrin dan

    radas-radas lain, terangkan satu ekperimen untuk menyiasat hipotesis yang

    dinyatakan di3(b).

    In your description, state clearly the following;

    Dalam penerangan anda, nyatakan dengan jelas perkara berikut;

    ( i) The aim of the experiment.

    Tujuan eksperimen.

    (ii) The variables in the experiment.

    Pemboleh ubah dalam ekperimen.

    (iii) The list of apparatus and materials.

    Senarai radas dan bahan

    (iv) The arrangement of the apparatus.

    Susunan radas.

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    (v) The procedure of the experiment which include the method of

    controlling the manipulated variable and the method of measuring the

    responding variable.

    Prosedur eksperimen termasuk kaedah mengawal pemboleh ubah

    dimanipulasikan dan kaedah mengukur pemboleh ubah bergerak

    balas.

    (vi) The way you would tabulate the data.

    Cara untuk menjadualkan data.

    ( vii) The way you would analyse the data.

    Cara menganalisis data.

    [ 10 marks ]

    [ 10 markah ]

    4. Diagram 4.1 and Diagram 4.2 show a driller.

    In Diagram 4.1, the 4.5 V batteries are used and the drill bit penetrated more into thewall.

    In Diagram 4.2, the 3.0 V batteries are used and the drill bit penetrated less into the

    wall.

    Rajah 4.1 dan Rajah 4.2 menunjukkan satu gerudi.

    Dalam Rajah 4.1, bateri 4.5 V digunakan dan mata gerudi lebih menembusi ke dalam

    dinding.

    Dalam Rajah 4.2, bateri 3.0 V digunakan dan mata gerudi kurang menembusi ke

    dalam dinding.

    Diagram 4.1 Diagram 4.2

    Rajah 4.1 Rajah 4.2

    Based on the information and observation:

    Berdasarkan maklumat dan pemerhatian tersebut:

    Drill bit

    Mata gerudi

    Drill bit

    Mata gerudi

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    (a) State one suitable inference. [1 mark]

    Nyatakansatu inferens yang sesuai. [1 markah]

    (b) State one suitable hypothesis. [1 mark]

    Nyatakansatu hipotesis yang sesuai. [1 markah]

    (c) With the use of apparatus such as a d.c. power supply, magnets, C-shaped iron

    yoke, bare copper wire, connecting wires and other apparatus, describe one

    experiment to investigate the hypothesis state in 4(b).

    Dengan menggunakan alat radas seperti bekalan kuasa a.t., magnet, dening

    besi berbentuk-C, dawai kuprum tak berpenebat, wayar penyambung dan

    radas-radas lain, terangkan satu ekperimen untuk menyiasat hipotesis yang

    dinyatakan di4(b).

    In your description, state clearly the following;Dalam penerangan anda, nyatakan dengan jelas perkara berikut;

    ( i) The aim of the experiment.

    Tujuan eksperimen.

    (ii) The variables in the experiment.

    Pemboleh ubah dalam ekperimen.

    (iii) The list of apparatus and materials.

    Senarai radas dan bahan

    (iv) The arrangement of the apparatus.

    Susunan radas.

    (v) The procedure of the experiment which include the method of

    controlling the manipulated variable and the method of measuring the

    responding variable.

    Prosedur eksperimen termasuk kaedah mengawal pemboleh ubah

    dimanipulasikan dan kaedah mengukur pemboleh ubah bergerak

    balas.

    (vi) The way you would tabulate the data.

    Cara untuk menjadualkan data.

    ( vii) The way you would analyse the data.

    Cara menganalisis data.

    [ 10 marks ]

    [ 10 markah ]

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    END OF QUESTION PAPER

    KERTAS SOALAN TAMAT

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    Physics Paper 1

    Trial Examination SBP 2011

    Marking Scheme

    1 C 26 B

    2 C 27 C

    3 C 28 A

    4 B 29 A

    5 A 30 B

    6 B 31 B

    7 D 32 A

    8 C 33 D

    9 B 34 B

    10 B 35 C

    11 B 36 D

    12 C 37 D

    13 B 38 C

    14 C 39 D

    15 B 40 A

    16 A 41 B

    17 B 42 B18 D 43 B

    19 C 44 D

    20 C 45 C

    21 D 46 D

    22 B 47 A

    23 C 48 A

    24 B 49 C

    25 A 50 A

    [ 50 marks ]

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    PEPERIKSAAN PERCUBAAN SBP FIZIK 2011

    MARKING SCHEME FOR PHYSICS PAPER 2

    No Answer Mark

    1 (a) Voltage 1

    (b) 0.8 V 1

    (c) Subtract with reading of zero error 1

    (d) 0.1V 1

    Total 4

    2 (a) Lights with one colour or one wavelength 1

    (b) Constructive interference takes place and bright fringes are

    observed.

    Destructive interference takes place and dark fringes are

    observed.

    1

    1

    (c)= 1.35 mm

    = 1.35 x 10-3

    m

    meter10x4.5

    1.5

    10x1.35x10x0.5

    D

    xa

    7-

    3-3-

    1

    1

    Total 5

    3 (a) Total number of proton and number of neutron 1

    (b) 2

    (c) Pb 210 1

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    (d) 3 and 2 2

    Total 6

    4 (a) Convex mirror 1

    (b) It can provide a wider field of view than plan mirror 1

    (c) (i) 3

    (ii) Virtual, upright and diminished 1

    (d) Size of image increase 1

    Total 7

    5(a)

    To measure gas pressure 1

    (b) (i) Volume in Diagram 5.1 is higher 1

    (ii) The reading of Bourdon Gauge in 5.1 is less 1

    (iii) Temperature is constant 1

    (c) When the volume of gas decreases the reading of Bourdon

    Gauge increasing

    1

    (d) Boyles Law 1

    (e) When the volume of gas decrease, the collision per unitarea increases

    The pressure of gas will increases.1

    1

    Total 8

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    6 (a) The region where a magnetic material experiences magneticforce

    1

    (b) (i) Diagram 6.2 > Diagram 6.1 1

    (ii) Diagram 6.2 > Diagram 6.1 1

    (c) When the magnitude of current increases, the final positionof the copper rods increases

    1

    (d) (i) 1. the combination between the magnetic field due to

    (permanent) magnet and magnetic field due to current in the

    copper rod (conductor wire)

    2. produces the resultant force that pushed the copper rods //catapults field

    1

    1

    (ii) Flemings Left Hand Rule 1

    (e) Use stronger magnets 1

    Total 8

    7 (a) Series circuit 1

    (b) (i) Diagram 7.1

    Re = R1 + R2 + R3= 4 + 4 + 4 (Substitution)

    = 12 (Answer wlth unit)

    Diagram 7.2

    1 = 1 + 1 + 1R R1 R2 R 3

    R e = 4

    3= 1. 33

    1

    1

    1

    (ii) Diagram 7.2 is brighter 1

    (iii) Total Effective resistance is lower in parallel circuit // the current flow increase

    Voltage across bulb is higher

    1

    1

    (c) (i) More 1

    (ii) In series 1

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    (iii) Lower Voltage lost (voltage drop) will decrease 11Total 10

    8 (a) (i) To limit the current through the transistor 1

    (ii) The higher the resistance the higher the potential difference 1

    (b) (i) Range value of resistance of LDR is 4 k until 6 k VBC = 6 x 6 = 4.5 V // VBC = 4 x 6 = 4 V

    8 8

    1

    1

    (ii) Range value of resistance of LDR is 4 k until 6 k

    VBC = 2 x 6 = 1.5 V // VBC = 2 x 6 = 2.0 V

    8 6

    1

    1

    (iii) Across BC 1

    (c) (i) npn

    Reason: the terminals of the transistor are correctly

    connected to the terminals of the batteries // produce forward

    biased connection.

    1

    1

    (ii) Relay switch

    Reason: to switch on the secondary circuit which need higher

    voltage

    1

    1

    (d) Circuit J 1

    Total 12

    9. (a) Atmospheric pressure 1

    (b) (i) 1. Volume in Diagram 9.1 is bigger

    2. mass of air trapped same

    3. pressure of air trapped in Diagram 9.2 higher

    1

    1

    1(ii) The higher the volume of air trapped the smaller the air

    pressure // volume inversely proportional with pressure

    Boyles law

    1

    1

    (c) The beaker accelerates upwards 1

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    Because buoyant force increase as depth increase //weight of water displace increases

    This is due to the depth of water increases // pressureof water is high

    So, buoyant force more than weight / resultant force

    1

    1

    1

    (d) Suggestion Explanation

    Low density // strong //

    nylon Light Does not tear easily.

    Big size Buoyant force increases //

    weight of water displace

    increases.

    Gas burner To heat up air in balloon //

    reduce density of air in the

    balloon

    Rope tied to the

    balloon

    Avoid the balloon moves

    away // to hold the balloon.//

    easy to descend the balloon

    Early in the morning //late evening

    Air surrounding is cooler //has high density.

    2

    2

    2

    2

    2

    Total 20

    10 (a) Radioactivity is the spontaneous disintegration of unstable

    nucleus accompanied by the emission of energetic particles

    or photons

    1

    (b) 1. Initial activity is the same

    2. time interval in Diagram 10.1 is longer

    3. rate of decay in Diagram 10.1 is lower

    1

    1

    1

    (c) (i) The higher the rate of decay the shorter the time interval 1

    (ii) The higher the rate of decay the shorter the half life 1

    (d) (i)238 U ---- 234 Th + 4 He

    92 90 22

    (ii) 1. The number of proton will decreases by 2 1

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    2. The number of neutron will decrease by 2 1

    (e) Suggestion Explanation

    i) -Use forceps/robot

    - Wear a mask//goggle

    The distance between the

    source and the body is far.

    The radiation does not

    penetrate our eyes

    ii).Use a lead box/container with thick

    concrete.

    To prevent radiation leakageto surroundings

    iii).- Keep the exposuretime as short as

    possible

    -

    Wear a film badge

    - Put radiation symbolon the storage box

    - Wear coat lined withlead

    The body is not exposed tothe radiation for a long time.

    To detect the amount ofradiation exposed

    To inform users of dangerous

    contents of the box.

    To protect the body from the

    radiation

    2

    2

    2

    2

    2

    Total 20

    11 (a) (i) Impulsive force 1

    (ii) 1 The surface of metal block is hard.