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CONFIDENTIAL 4531/1SULIT

4531/1 PKSM Cawangan NSDK [Lihat sebelah

CONFIDENTIAL/SULIT

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MAKLUMAT UNTUK CALON

1. Kertas soalan ini mengandungi 50 soalan.

2. Jawab semua soalan.

3. Jawab dengan menghitamkan ruangan yang betul pada kertas jawapan.

4. Hitamkan satu ruangan sahaja bagi setiap soalan.

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

Kemudian hitamkan jawapan yang baru.

6. Rajah yang mengiringi soalan tidak dilukis mengikut skala kecuali dinyatakan.

7. Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh diprogram.

MOZ@C

SMS MUZAFFAR SYAH , MELAKA

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

1. a =t

uv 15.

Power, P = energy

time

2. v2 = u2 + 2as 16. f

1

u

1+

v

1

3. s = ut +2

1at

217. =

D

ax

4. Momentum = mv 18.n = sin i

sin r

5. F = ma 19.n = real depth

apparent depth

6. Kinetic energy = mv2 20. Q = I t

7. Gravitational potential energy = mgh 21. V = IR

8. Elastic potential energy = Fx 22. Power, P = IV

9. =V

m23.

s

p

s

p

V

V

N

N

10. Pressure, P = hg 24. Efficiency =p

s

p

s

V

V

I

Ix 100%

11.Pressure , P =

A

F

25. g = 10 ms-2

12. Heat, Q = mc 26. E = mc2

13.T

pV= constant 27.

Linear magnification, m = v

u

14. v = f 28.Power of lens P = 1

f

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Each question is followed by three orfour options. Choose the best option for each

question then blacken the correct space on the answer sheet.

1 Which of the following unit is correct?

Manakah antara unit berikut betul?

Quantity SI unit

Kuantiti Unit SI

2 Diagram 1 shows a micrometer screw gauge.

Rajah 1 menunjukkan tolok skru mikrometer

What is the reading of the micrometer?

Berapakah bacaan mikrometer itu?

3 Density of mercury is 13600 kgm-3 which is equivalent to

Ketumpatan merkuri, 13600 kgm-3

adalah setara dengan

A Force kgms-2

Daya

B Density kgm-2

Ketumpatan

C Area m3

Luas

D Acceleration ms-1

Pecutan

A 6.00 mm

B 6.02 mmC 6.45 mmD 6.48 mm

A 0.136 gcm-3

B 1.36 x 10-2 gcm-3

C 1.36 x 10-3

gcm-3

D 13.6 gcm-3

Diagram 1

Rajah 1

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6 Diagram 4 shows two strips of a ticker tape. The arrow shows the direction of the

motion each ticker tape is pulled.Rajah 4 menunjukkan dua keratan pita detik. Anak panah menujukkan arah

gerakan pita itu ditarik.

Which of the following statement is true?Manakah antara pernyataan berikut adalah benar?

A Both strips undergoes constant accelerationKedua-dua keratan mengalami pecutan seragam

B The average velocities of both strips are the sameHalaju purata kedua-dua keratan adalah sama

C The time taken by strip Q is longer than that of strip P

Masa yang diambil oleh keratan Q lebih lama daripada oleh keratan P

D The distance travelled by strip Q is more than that of strip PJarak yang dilalui oleh keratan Q lebih jauh daripada oleh keratan P

Strip Q

Keratan Q

Strip PKeratan P

Diagram 4

Rajah 4

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7 Diagram 5 shows a graph of the force exerted on a spring against the extension of

the spring.Rajah 5 menunjukkan graf bagi daya yang dikenakan melawan pemanjangan

spring.

What is the elastic potential energy stored in the spring when it is stretched

for 6 cm?

Berapakah tenaga keupayaan elastik yang tersimpan di dalam spring apabila ia

diregangkan sebanyak 6 cm?

A 0.18 J

B 0.36 JC 18.0 J

D 36.0 J

8 Which of the following physical quantities of a freely falling object in a vacuum

will not change?Antara kuantiti fizikal bagi satu objek yang jatuh bebas dalam vakum yang

berikut tidak akan berubah?

A VelocityHalaju

B Momentum

Momentum

C AccelerationPecutan

D Kinetic energy

Tenaga kinetik

Force/N

Berat/N

0 2 4 6 Extension/cm

Pemanjangan/cm

6

Diagram 5

Rajah 5

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12 Diagram 9 shows a stone is being thrown upwards.Rajah 9 menunjukkan sebiji batu dibaling ke atas.

Which of the following quantities of the stone decreases before it reaches its

highest point?

Manakah antara kuantiti batu yang berikut akan berkurang sebelum batu itu

sampai ke paras tertingginya?

A Mass

Jisim

B WeightBerat

C Momentum

Momentum

D InersiaInersia

Diagram 9

Ra ah 9

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13 Diagram 10 shows a load of weight, W is kept in equilibrium by two strings.Rajah 10 menunjukkan satu beban mempunyai berat, W berada dalam keadaan

keseimbangan.

Which of the vector diagrams represent the forces T1, T2 and W acting

on the load?

Rajah vektor yang manakah mewakili T1, T2 dan W yang bertindak ke atas beban

tersebut?

A B

C D

load

T1

T2

60o

90o

W

Diagram 10

Rajah 10

60o

WT1

T2

60oT1W

T2

60o

T1

T2

60o W

T1

T2

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15 Diagram 12 shows a load hung from a spring balance is slowly submerged in water

until it is immersed completely.

Rajah 12 menunjukkan satu beban yang digantungkan pada neraca spring di

tenggelamkan perlahan-lahan ke dalam air sehingga ia tenggelam sepenuhnya.

What will happen to the spring balance reading?

Apakah akan berlaku pada bacaan neraca spring?

A decreases until zero

berkurang sehingga sifar

B remains unchangedtetap tidak berubah

C decreases until reaches a constant valueberkurang hingga mencapai satu nilai tetap

16 An air bubble is at a depth of 5 metre below the surface of a lake. What is the

pressure of the bubble due to the depth of water?

(Given the density of the water is 1 000 kg m-3

)

Satu gelembong udara pada kedalaman 5 meter di bawah permukaan tasik.Berapakah tekanan gelembung udara yang disebabkan oleh kedalaman air ?

{Diberi ketumpatan air ialah 1 000 kg m-3

}

A 5 x 10-2

Pa

B 5 x 10-3

PaC 5 x 10 3 Pa

D 5 x 104 Pa

Spring balance

Neraca s rin

water

air

load

beban

Diagram 12

Rajah 12

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17 Gas pressure exists because the gas moleculesTekanan gas wujud kerana molekul-molekul gas

A move randomly and freelybergerak secara rawak dan bebas

B move at the same velocity

bergerak pada halaju yang sama

C collides with the wall of the container produces change of momentum

berlanggar dengan dinding bekas menghasilkan perubahan momentum

D collides with one another in elastic collisions and with the walls of the container

berlanggar antara satu sama lain secara perlanggaran kenyal dan dengan

dinding bekas

18 Diagram 13 shows a cylinder contains air.Rajah 13 menunjukkan satu silinder mengandungi udara

When the piston is pulled upwards, which of the following is true?Apabila piston itu ditarik ke atas, manakah antara berikut adalah benar?

A The density of the gas molecules increasesKetumpatan molekul-molekul gas bertambah

B The distance between molecules of gas increasesJarak antara molekul-molekul gas bertambah

C The number of the gas molecules per unit volume increasesBilangan molekul gas per unit isipadu bertambah

D The frequency of collisions between the gas molecules with the walls of thecontainer increase

Frekuensi perlanggaran antara molekul-molekul gas dengan dinding

bekas bertambah.

air tight piston

omboh kedap udara

Cylinder

silinder Diagram 13

Rajah 13

air

udara

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19 Which of the following shows the height h, of simple mercury barometer that

measures the atmospheric pressure?Manakah antara berikut menunjukkan ketinggian h pada barometer merkuri yang

mengukur tekanan atmosfera?

20 Diagram 14 shows an air balloon of mass 250 kg is floating stationary in the air.Rajah 14 menunjukkan belon udara berjisim 250 kg terapung pegun di udara.

What is the upthrust of the balloon?

Berapakah daya angkat pada belon?

A 25 N

B 100 NC 250 N

D 2 500 N

Diagram 14

Rajah 14

Ground

Bumi

Air balloon

Belon udara

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21 Diagram 15 shows a card and a glass of water. Rajah 15 menunjukkan kad dan segelas air.

When the hand is released, water does not flow out from the glass.What physics concept involved in the above situation?

Apabila tangan dialihkan, air tidak mengalir keluar daripada gelas.Apakah konsep fizik yang terlibat dalam situasi di atas?

A Liquid pressure

Tekanan cecair

B Atmospheric pressure

Tekanan atmosfera

C Gas pressure

Tekanan gas

22 Heat energy is supplied at the same rate to 100 g of paraffin and 100 g of water in

similar containers. The temperature of the paraffin rises faster. This is because

the paraffinTenaga haba dibekalkan dengan kadar yang sama terhadap 100g paraffin dan

100 g air di dalam bekas yang sama. Suhu paraffin meningkat dengan lebih

cepat kerana paraffin

A is denser than water

lebih tumpat daripada air

B is less dense than water.kurang tumpat daripada air

C has a smaller specific heat capacity than water

mempunyai muatan haba tentu yang rendah daripada air

D has a larger specific heat capacity than watermempunyai muatan haba tentu yang tinggi daripada air

Diagram 15

Rajah 15

Glass of watergelas berisi air

cardboard

kadbod

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23 Hot water at 1000C is added to 5 g of ice at 0

0C. What is the minimum mass of

hot water needed to melt the ice?[Specific latent heat of fusion of ice is 336 J g-1, Specific heat capacity of water is

4.2 J g-1 0

C-1

]

Air panas pada suhu 100

0

C dicampurkan kepada 5 g ais pada suhu 0

0

C.Berapakan jisim minimum air panas yang diperlukan untuk mencairkan ais?

[Haba pendam tentu pelakuran ais 336 J g-1

, muatan haba tentu air 4.2 J g-1 0

C-1

]

A 0.8 g

B 4.0 gC 16.8 g

D 70.6 g

24 In very cold weather, water pipes sometimes burst becausePada musim sejuk, paip air kadangkala pecah kerana

A the pipes contract on cooling so that the water pressure inside risespaip mengecut pada musim sejuk maka tekanan air di dalam paip

meningkat

B the ice which formed inside the pipes expands when it melts

ais yang terbentuk di dalam paip mengembang apabila mencair

C water expands when cooled from 40C to 0

0C or below.

air mengembang apabila menyejuk dari 40C ke 0

0C atau ke bawah

D the formation of ice from water produces an increase in volume.pembentukkan ais daripada air meningkatkan isipadu

25 When an ice cube, initially at 0 0C, is left in an area at room temperature, the ice

cube will melt because

Seketul ais pada suhu 00C, akan bertukar menjadi cecair apabila diletakkan di

tempat yang mempunyai suhu bilik kerana

A no energy is required for this process to occurtiada tenaga diperlukan untuk prosess ini berlaku

B the molecules within the ice lose kinetic energy

molekul di dalam ais kehilangan tenaga kinetik

C the molecules within the ice gain potential energy

molekul di dalam ais memperolehi tenaga keupayaan

D the molecules within the ice lose potential energy

molekul di dalam ais kehilangan tenaga keupayaan

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26 The focal length of a converging lens is 10 cm. What is the maximum distance

from the lens to the object so that the lens can acts as a magnifying lens?

Panjang fokus sebuah kanta cembung ialah 10 cm. Berapakah jarak maksimumantara suatu objek dengan kanta cembung tersebut supaya kanta itu boleh

berfungsi sebagai sebuah kanta pembesar ?

A 5 cmB 10 cm

C 15 cm

D 20 cm

27 Which of the optical instruments uses total internal reflection principle?Manakah peralatan optik yang menggunakan prinsip pantulan dalam penuh?

A Simple microscopeMikroskop ringkas

B Magnifying glassKanta pembesar

C Astronomical telescopeTeleskop astronomi

D Prism periscope

Periskop prisma

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28 Diagram 16 shows two cars, X and Y, travelling in the different directions and

passing through a sharp bend.Rajah 16 menunjukkan dua buah kereta, X dan Y, sedang bergerak pada arah

yang berlainan dan melalui selekoh tajam.

Which of the following mirrors is the most suitable to be placed at point P so thatthe driver of car X can see car Y?Antara yang berikut, jenis cermin yang manakah paling sesuai untuk diletakkan

pada kedudukan P supaya pemandu kereta X boleh melihat kereta Y?

A Plane mirror

Cermin satah

B Concave mirror

Cermin cekung

C Convex mirrorCermin cembung

D L- shape plane mirrorCermin satah bentuk L

Diagram 16

Rajah 16

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29 Diagram 17.1 shows that Ahmad throws a stone into a lake with the depth of

water increasing towards the centre of the lake. The wave pattern formed is asshown in figure 17.2.

Rajah 17.1 menunjukkan Ahmad membaling batu ke dalam tasik yang

kedalamannya semakin bertambah ke arah tengah tasik. Corak gelombang yang

dihasilkan adalah seperti rajah 17.2

Diagram 17.1

Rajah 17.1

Diagram 17.2

Rajah 17.2

What is the wave phenomena involved in this situation?

Apakah fenomena gelombang yang berlaku dalam situasi ini?

A Refraction

Pembiasan

B Diffraction

Pembelauan

C Interference

Interferen

D ReflectionPantulan

batu

pantaidasar tasik

muka elomban

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30

Diagram 18Rajah 18

Which of the following statements is true about the sound waves?Manakah antara kenyataan berikut benar untuk gelombang bunyi

A Sound waves is a transverse wavesGelombang bunyi adalah gelombang melintang

B Sound waves is an electromagnetic waves

Gelombang bunyi adalah gelombang elektromagnet

C Air particles at the speaker vibrates perpendicular to the direction of the

wave propagation.Molekul udara di hadapan pembesar suara bergetar berserenjang

dengan arah perambatan gelombang

D Reflection helps us to hear the soundPantulan membantu kita mendengar bunyi

amplifierdiafragma

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Diagram 19

Rajah 19

Diagram 19 shows an interference pattern for water waves. Calculate the

separation of two consecutive nodal lines, x if D and a are given as 0.2 m and

5 cm respectively.Rajah 19 menunjukkan corak interferen bagi gelombang air. Hitung jarak

pemisah antara dua garis nod, x jika diberi jarak satah, D dan jarak antara

sumber, a adalah 0.2 m dan 5 cm masing-masing

A 0.033 B 4

C 20 D 40

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32 Diagram 20 shows a graph of an oscillation system experiences damping.Rajah 20 menunjukkan graf pelembapan bagi satu sistem ayunan.

Diagram 20

Rajah 20

Which of the following quantities does not change?

Manakah antara kuantiti fizik berikut yang tidak berubah ?

A Period, T

Tempoh T

B Wavelength, Jarak gelombang,

C Amplitude ,aAmplitud,a

D Energy, ETenaga, E

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33 Diagram 21 shows a radar transmits signal to aeroplane PRajah 21 menunjukkan sebuah radar menghantar isyarat kepada kapalterbang P

Diagram 21

Rajah 21

The radar transmits a signal at a velocity of 3.0 x 108 ms-1 towards the aeroplane P

and detects the reflected signal 4 x 10-4 s later. Calculate the distance of P from

the transmitter radar at that time?

Sebuah radar menghantar isyarat kepada kapalterbang P pada kelajuan

3.0 x 108

ms-1

dan kemudiannya menerima semula isyarat pantulan pada

4 x 10-4

s kemudian. Kirakan sesaran P dari radar pemancar pada masa tersebut.

A 6 x 104 m

B 6 x 105

m

C 1.2 x 105

mD 1.2 x 1012 m

Aeroplane P

Kapalterbang P

Radar transmitter

Radar pemancar

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34. Diagram 22 shows a circuit.Rajah 22 menunjukkan satu litar.

6 V V1 R =12

V3 9V

V2 R= 6

What is the reading on the voltmeter V2 ?Apakah bacaan voltmeter V2 ?

A 3 VB 6V

C 9V

D 15 V

35 A cars 12 V accumulator cannot be replace by a large 12 V dry cells because

the dry cells would

Akumulator kereta (sel basah),12V tidak boleh diganti dengan 12 V bateri sel

kering kerana ini akan menyebabkan

A be too heavy and too many dry cells

berat dan terlalu banyak bateri

B have too large internal resistance

rintangan dalam terlalu besarC have the wrong polarity

mempunyai kutub yang salah

D not provide a.ctidak membekalkan arus ulangalik

Diagram 22

Rajah 22

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36 Diagram 23 below shows a cell of negligible internal resistance connected to

two resistors. Rajah 23 menunjukkan bateri (abaikan rintangan dalam) yang disambungkan

kepada dua perintang.

6V

I

20

40

Diagram 23Rajah 23

What is the value of current, I?Apakah nilai arus ,I ?

A 0.45 AB 0.40 A

C 0.25 A

D 0.20 A

37 Why is the filament made in the shape of a coil?Mengapakah bentuk filamen bergelung?

A To increase the length and produce a higher resistanceUntuk menambahkan panjang dan menghasilkan rintangan yang tinggi

B To increase the current and produce more energy

Untuk menambahkan arus dan menghasilkan lebih tenaga

C To decrease the resistance and produce a higher current

Untuk mengurangkan rintangan dan menghasikan arus yang tinggi

D To decrease the current and produce a higher potential difference

Untuk mengurangan arus dan menambahkan beza keupayaan

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38 A current flow in two resistors connected in series as shown in Diagram 24.

A1 and A2 are the reading on the ammeter, V1 and V2 are the reading on thevoltmeters.

Arus melalui dua perintang yang disambung bersiri seperti dalam rajah 24.

A1 dan A2 adalah bacaan ammeter, V1 dan V2 adalah bacaan voltmeter.

V1 V2

Current

A1 5 10 A2

Diagram 24Rajah 24

Which of the following correctly describes the ammeter and voltmeter reading?

Manakah antara pernyataan berikut betul tentang bacaan ammeter dan bacaan

voltmeter?

Ammeter reading Voltmeter reading Bacaan ammeter Bacaan voltmeter

A A1 < A2 V1 < V2B A1 = A2 V1 = V2C A1 = A2 V1 < V2D A1 > A2 V1 = V2

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39 Which of the following shows the correct pattern of the magnetic field produced

by current flows into the page?Manakah antara rajah berikut menunjukkan medan magnet yang terhasil apabila

arus masuk ke arah dalam kertas

40 Diagram 25 shows a pendulum bob attached to the end of copper wire. The

pendulum bob is allowed to swing between North and South Pole of two magnets.

Rajah 25 menunjukkan sebuah bandul digantung pada hujung seutas dawai kuprum

Bandul itu berayun antara kutub utara dan kutub selatan dua magnet.

Diagram 25Rajah 25

What is the correct position of the pendulum bob to get the maximum deflection

of the galvanometer pointer?Apakah kedudukan yang betul bandul itu untuk menghasilkan pesongan penuh

galvanometer?

Dawai kuprum

bandul

Pendulum

bob

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43 Diagram 27 shows a circuit containing a step down transformerRajah 27 menunjukkan litar bagi transformer injak turun.

Diagram 27

Rajah 27

Which statement is correct about the brightness of bulb P and bulb Q?

Manakah antara pernyataan berikut benar tentang kecerahan mentol P dan mentol Q

A Bulb P is brighter than bulb Q

Mentol P lebih cerah daripada mentol Q

B Bulb Q is brighter than bulb P

Mentol Q lebih cerah daripada mentol P

C Bulb P and bulb Q have the same brightness

Mentol P dan mentol Q mempunyai kecerahan yang sama

44 A cathode ray oscilloscope can be used as follows exceptOsiloskop Sinar Katod boleh digunakan seperti berikut kecuali

A measure current

mengukur arus

B show the wave of alternating current

menunjukkan gelombang arus ulang alik

C measure time intervalmengukur sela masa

D measure the frequency of alternating currentmengukur frekuensi arus ulang alik

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45 Diagram 28 shows a circuit containing three logic gates.Rajah 28 menunjukkan litar yang mengandungi tiga get logik.

Diagram 28

Rajah 28

Which of the following logic gate is equivalent to the circuit above?Manakah di antara get logic berikut adalah setara dengan litar di atas?

A OR gateGet ATAU

B AND gateGet DAN

C NOT gateGet TAK

D NAND gateGet TAKDAN

46. Which of the following diagrams is an n-type semiconductor?

Manakah di antara rajah berikut adalah semikonduktor jenis n?

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47 Diagram 29 shows the symbol of an npn transistor.Rajah 29 menunjukkan simbol transistor npn

Diagram 29Rajah 29

What is the value of Ie?Berapakah nilai Ie?

A 24 mA

B 115 mA

C 125 mA

D 600 mA

48. Which of the following is NOT the direction of-particles approach very close to

the nucleus of an atom?

Yang manakah di antara berikut TIDAK menunjukkan arah zarah apabila

mendekati nukleus suatu atom?

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49 Three nuclei X, Y and Z have proton numbers and nucleon numbers as shown in the

table below.Tiga nukleus X, Y dan Z mempunyai nombor proton and nukleon seperti jadual di

bawah.

Proton numberNombor Proton Nucleon numberNombor nukleon

X 43 93

Y 43 94

Z 44 94

Which nuclei are isotopes of the same element?

Manakah nuklei adalah isoptop dari unsur yang sama?

A X and Y only

X dan Y sahaja

B X and Z onlyX dan Z sahaja

C Y and Z onlyY dan Z sahaja

D X, Y and Z

X, Y dan Z

50 A nuclide 232 V decays to nuclide220

W and emits alpha-particles and92 90

beta-particles. How many alpha and beta particles are produced?

Satu nukleus232

V mereput kepada nukleus220

W dan mengeluarkan92 90

zarah alfa dan beta. Berapakah bilangan zarah alfa dan beta dihasilkan?

A 4 and 3

4 dan 3

B 3 and 4

3 dan 4

C 4 and 44 dan 4

D 3 and 3

3 dan 3

END OF QUESTION PAPER

KERTAS SOLAN TAMAT

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PERSIDANGAN KEBANGSAAN PENGETUA-PENGETUA

SEKOLAH MENENGAH MALAYSIA

CAWANGAN NEGERI SEMBILAN DARUL KHUSUS

PEPERIKSAAN PERCUBAAN BERSAMA

SIJIL PELAJARAN MALAYSIA 2008

PHYSICS (FIZIK)Paper 2 (Kertas 2)

Two hours and thirty minutes ( Dua jam tiga puluh minit)

JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU

Kertas soalan ini mengandungi 31 halaman bercetak

Name :

Form :

4531 / 2

Physics

Paper 2

September

2008

2 hours

Kod Pemeriksa

Bahagian SoalanMarkah

Penuh

Markah

Diperoleh

1 4

2 5

3 6

4 7

5 8

6 8

7 10

A

8 12

1 20

B 2 20

3 20C

4 20

Jumlah

1. Tuliskan nama dan kelas

anda pada ruang yang

disediakan.

2. Kertas soalan ini adalah dalam

dwibahasa.

3. Soalan dalam Bahasa Inggeris

mendahului soalan yang sepadan

dalam dalam Bahasa Melayu.

4. Calon dibenarkan menjawab

keseluruhan atau sebahagian soalan

sama ada dalam Bahasa Inggeris

atau Bahasa Melayu.

5. Calon dikehendaki membacamaklumat di halaman 2 atau

halaman 3.

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INFORMATION FOR CANDIDATES

1. This question paper consists ofthree sections:

Section A, Section B and Section C.

2. Answerallquestions in Section A. Write your answers for Section A in the spacesprovided in the question paper.

3. Answerone question in Section B andone question from Section C. Write your

answers for Section B andSection C on a separate answer sheet.

Answer questions in Section B andSection C in detail.

Answers should be clear and logical. Equations, diagrams, tables, graphs and

other suitable methods can be used to explain your answer.

4. If you wish to cancel any answer, neatly cross out the answer.

5. The diagrams in the questions provided are not drawn to scale unless stated.

6. The marks allocated for each question and sub-section of a question are shown in

brackets.

7. A list of formulae is provided on page 5.

8. You may use a non-programmable scientific calculator. However, steps in

calculation must be shown.

9. The time suggested to complete Section A is 90 minutes, Section B is 30

minutes andSection Cis 30 minutes.

10. Hand in all your answer sheets at the end of the examination.

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MAKLUMAT UNTUK CALON

1. Kertas soalan ini mengandungi tiga bahagian:

Bahagian A, Bahagian B dan Bahagaian C.

2. Jawab semua soalan dalam Bahagian A. Jawapan kepada Bahagian Ahendaklah ditulis dalam ruang yang disediakan dalam kertas soalan

3. Jawab satu soalan daripada Bahagian B dan satu soalan daripadaBahagian C. Jawapan kepada Bahagian B dan Bahagian C hendaklah ditulis

dalam kertas jawapan berasingan.

Anda diminta menjawab dengan lebih terperinci untukBahagian B dan

Bahagian C.

Jawapan mestilah jelas dan logik. Persamaan, gambar rajah, jadual, graf

dan cara lain yang sesuai untuk menjelaskan jawapan anda boleh digunakan.

4. Sekiranya anda hendak membatalkan sesuatu jawapan, buat garisan di atasjawapan itu.

5. Rajah yang mengiringi soalan tidak dilukis mengikut skala kecuali dinyatakan.

6. Markah yang diperuntukkan bagi setiap soalan atau ceraian soalan ditunjukkan

dalam kurungan di hujung setiap soalan atau ceraian soalan.

7. Satu senarai rumus disediakan di halaman 5.

8. Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh diprogram.

Walau bagaimanapun, langkah mengira perlu ditunjukkan.

9. Masa yang dicadangkan untuk menjawab Bahagian A ialah 90 minit.

Bahagian B ialah 30 minit dan Bahagaian C aialah 30 minit.

10. Ikatkan semua kertas jawapan dan serahkan di akhir peperiksaan.

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

1. a =t

uv 15.

Power, P = energy

time

2. v2 = u2 + 2as 16. f

1

u

1+

v

1

3. s = ut +2

1at

217. =

D

ax

4. Momentum = mv 18.n = sin i

sin r

5. F = ma 19. n = real depthapparent depth

6. Kinetic energy = mv2 20. Q = I t

7. Gravitational potential energy = mgh 21. V = IR

8. Elastic potential energy = Fx 22. Power, P = IV

9. =V

m23.

s

p

s

p

V

V

N

N

10. Pressure, P = hg 24. Efficiency =p

s

p

s

V

V

I

Ix 100%

11.Pressure , P =

A

F

25. g = 10 ms-2

12. Heat, Q = mc 26. E = mc2

13.T

pV= constant 27.

Linear magnification, m = v

u

14. v = f 28.Power of lens P = 1

f

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BLANK PAGE

(HALAMAN KOSONG)

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SECTION A

Bahagian A

[60 marks]

[60 markah]

Answer all questions from this section.

Jawab semua soalan daripada bahagian ini.

1 The equations of motion provides a useful means of predicting information about

an objects motion in a straight line.

Persamaan gerakan dapat memberikan maklumat berkenaan pergerakan objek

yang bergerak dalam garis lurus.

The equation which describe an objects motion is given by the equation below

Persamaan yang menerangkan pergerakan objek terdapat dalam persamaan

di bawah

s = ut + at2

where s is displacement, u is initial velocity, a is acceleration and t is time.

di mana s ialah sesaran, u ialah halaju awal, a ialah pecutan dan t ialah masa.

(a) (i) What is meant by base quantity ?

Apakah yang dimaksudkan dengan kuantiti asas?

..

(ii) What is the base unit for acceleration?

Apakah unit asas bagi pecutan?

(b) Based on the equation, give one example of

Berdasarkan persamaan tersebut, nyatakan satu contoh

Base quantity

Kuantiti asas

Derived quantity.

Kuantiti terbitan

Scalar quantity

Kuantiti skalar

Vector quantity

Kuantiti vektor

[1 mark]

[1 markah]

1

1

1

1[1 mark]

[1 markah]

[1 mark]

[1 markah]

[1 mark]

[1 markah]

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2. Diagram 1 shows the side mirrors of a car which helps the driver to see objects

behind the car more effectively.

Rajah 1 menunjukkan sebuah kereta yang mempunyai cermin sisi yang

berfungsi untuk membantu pemandu melihat objek di belakang kereta dengan

lebih berkesan.

(a) State the type of mirror used.

Nyatakan jenis cermin yang digunakan bagi cermin sisi tersebut.

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

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

[ 1 mark ]

[1 markah ]

(b) Give one reason why this type of mirror is used instead of a plane mirror.

Berikan satu sebab jenis cermin tersebut digunakan dan bukannya cermin

satah.

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

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

[ 1 mark ]

[1 markah ]

Diagram 1Rajah 1

Side mirror

Cermin sisi

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(c) In Diagram 2, F is the focal point and C is the centre of curvature of a

convex mirror.

Dalam Gambarajah 2, F dan C masing-masing ialah titik fokus dan

pusat kelengkungan bagi suatu cermin cembung.

(i) Complete the ray diagram in Diagram 2 to show the position of the

image formed.

Lengkapkan gambarajah sinar pada Rajah 2 dan tunjukkan posisi

bagi imej yang terbentuk.

[ 2 marks]

[ 2 markah ]

(ii) State two characteristics of the image formed.

Nyatakan dua ciri-ciri imej yang terbentuk.

1. ..

2. ..

[ 1 mark ]

[ 1 markah ]

Diagram 2

Rajah 2

2

1

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3 The diagram 3 shows a U-shaped laminated soft iron core is wound with

insulated copper wire AB and CD. An a.c. voltage of 240 V is connected at

the end of AB and a bulb 12V 60W is connected at the end CD.

Rajah 3 menunjukkan satu teras besi lembut berlapis berbentuk-U dililitkan

dengan dawai kuprum bertebat AB dan CD. Voltan a.u 240 Vdisambungkan kepada hujung AB dan mentol 12V 60W disambungkan

kepada hujung CD.

Diagram 3

Rajah 3

(a) What type of transformer is shown in Diagram 3.

Apakah jenis transformer yang ditunjukkan dalam Rajah 3

[ 1 mark ]

[1 markah]

(b) State one reason why the a.c. voltage is supplied.

Nyatakan satu sebab mengapa voltan a.u dibekalkan.

.

[ 1 mark ]

[1 markah]

(c) The bulb lights up with normal brightness. Determine the ratio of the

number of turns in the coil AB to the number of turns in the coil CD.Mentol menyala dengan kecerahan normal. Tentukan nisbah bilangan

lilitan gegelung AB kepada bilangan lilitan gegelung CD

[ 2 marks ]

[2 markah]

12V 60W

Soft iron core

Input

Voltage

240V a.c

Primary coil

Secondary coil

P Q

A

B

C

D

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(d) The voltage supply 240 V. alternating current. is replaced by a voltage

supply 240 V direct current.

Bekalan kuasa yang dibekalkan 240 V arus ulangalik itu di gantikan

dengan bekalan kuasa 240V arus terus.

(i) What happens to brightness of the bulb.

Apakah yang berlaku kepada kecerahan mentol?

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

[ 1 mark ]

[1 markah]

(ii) Give the reason for your answer.

Nyatakan sebab jawapan anda.

.

[ 1 mark ]

[1 markah]

1

1

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4. Diagram 4 shows Nadia standing on a weighing scale in a lift with Farah

standing beside her.

Rajah 4 menunjukkan Nadia sedang berdiri di atas penimbang berat di dalam

lif bersebelahan Farah.

The reading of the weighing scale observed by Farah is 50 kg when the lift is

stationary.

Bacaan penimbang diperhatikan Farah ialah 50 kg apabila lif itu

sedang berhenti

(a) What is Nadias weight? [1mark]

Berapakah berat Nadia? [1markah]

.

(b) How is the reading of the weighing scale when the lift

Berapakah bacaan penimbang apabila lif itu

(i) accelerates upward [1mark]

memecut ke atas [1markah]

.

(ii) accelerates downward [1mark]

memecut ke bawah [1markah]

(iii) moves downward with constant velocity [1mark]

bergerak ke bawah dengan halaju seragam [1markah]

Diagram 4

Rajah 4

Nadia

Farah

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(c) Give reasons for your answer in (b)(iii)

[1 mark]

[1 markah]

(d) If the reading of the weighing scale in Diagram 4 is 46 kg, find the value

of the acceleration of the lift.

Jika bacaan penimbang pada Rajah 4 ialah 46 kg, tentukan nilai pecutan lift itu.

[2 marks]

[2 markah]

2

1

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5. The label on electric kettle is marked 240 V , 3 kW. The kettle

contains 1.7 kg of water at 200

C. It takes 3.5 minutes to raise the

temperature of the water to 1000

C.

[ Specific heat capacity of water is 4.2 X103

J kg-1 0

C-1

,

specific latent heat of vaporization of water 2.3 X106

J kg-1

]

Sebuah cerek dilabelkan sebagai 240 V , 3 kW. Cerek mengandungi 1.7 kg air

pada suhu 200

C. Selama 3.5 minit masa diperlukan untuk meningkatkan

suhu air sehingga 1000C.

[Muatan haba tentunya ialah 4.2 X 103J kg

-1 0C

-1, haba pendam tentu

pengewapan air 2.3 X106

J kg-1

]

(a) What is meant by specific heat capacity?

Apakah yang dimaksudkan dengan muatan haba tentu?

...

..

[ 2 marks ]

[2 markah]

(b) Calculate

Kira

(i) the energy output of the electric kettle in 3.5 minutes,

tenaga yang dikeluarkan dari cerek dalam masa 3.5 minit

[ 2 marks ]

[2 markah]

Diagram 5

Rajah 5

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(ii) the energy required to raise the temperature of 1.7 kg of water from 200

C to 1000

C.

tenaga yang diperlukan untuk meningkatkan suhu bagi 1.7 kg air dari 200

C ke 1000

C.

[ 2 marks ]

[2 markah]

(iii) the energy required to boil away 0.23 kg of water at 100 0 C.tenaga yang diperlukan untuk mendidihkan 0.23 kg air pada 100

0C

[ 2 marks ]

[2 markah]

2

2

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6. Diagram 6 shows an electromagnetic spectrum

Rajah 6 menunjukkan spektrum elektromagnet

Diagram 6

Rajah 6

(a) (i) What is meant by electromagnetic waves?

Apakah yang dimaksudkan dengan gelombang elektromagnet?

....

[1 mark ]

[1markah]

(ii) Give one common characteristic of the components of the

electromagnetic spectrum.

Berikan satu ciri sepunya komponen spektrum elektromagnet.

[ 1 mark ]

[ 1 markah]

PS

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(b) Based on the Diagram 6, give the name and the usage of components

P and S .

Berdasarkan Rajah 6, berikan nama dan kegunaan komponen P dan S

[

[4 marks ]

[4 markah]

(c) Given that the speed of electromagnetic wave is 3 x 108

m s-1

.

Find the wavelength of the radio wave which has a frequency

of 3.2 kHz.

Diberi halaju gelombang elektromagnet ialah is 3 x 108

m s-1

.

Cari panjang gelombang bagi gelombang radio yang mempunyai

frekuensi 3.2 kHz.

[ 2 marks ]

[2 markah]

Component of the

electromagnetic wavesKomponen gelombang

elektromagnet

Applications of the waves

Kegunaan gelombang

P : .

S: .

2

2

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7 (a) Diagram 7.1 show a boat made from steel floating at the sea. The mass of

the boat is 7500 kg.

Rajah 7.1 menunjukkan bot yang diperbuat daripada keluli di air laut.

Jisim bot itu adalah 7500 kg.

.

Diagram 7.1

Rajah 7.1

(i) State one function of plimsoll line?

Nyatakan satu kegunaan garis plimsol?

.

[ 1 mark]

[1 markah]

(ii) What is the buoyant force acts on the boat.

Berapakah daya julangan yang bertindak ke atas bot itu.

[2 marks]

[2 markah]

Plimsoll line

Garis plimsoll

Sea water

Air laut

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(iii) In the Diagram 7.2, mark the level of water when the boat enter the river

Mouth.

Dalam Rajah 7.2, tandakan paras air bila bot itu memasuki muara

sungai.

[1 mark]

[1 markah]

(iv) Explain your answer in (a)(iii).

Terangkan jawapan anda di (a)(iii).

..

.

[ 2 marks]

[2 markah]

(b) Diagram 7.3 shows a hot air balloon floating stationary in the air.

Rajah 7.3 menunjukkan belon udara panas terapung pegun di udara.

Upthrust

Weight

Berat

Diagram 7.2

Rajah 7.2

Diagram 7.3

1

2

Hot air balloon

Belon udara panas

Load

Beban

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(i) State the relationship between the weight of air balloon and the upthrust.

Nyatakan hubungan antara berat belon udara dan daya julangan.

..[ 1 mark]

[1 markah]

(ii) What will happen to the air balloon if the load is dropped?

Apakah yang akan berlaku kepada belon udara panas jika beban dijatuhkan.

[ 1 mark][1 markah]

(iii) Explain your answer in (b) (ii).

Terangkan jawapan anda di (b)(ii)

...

..

.

[ 2 marks]

[2 markah]

1

1

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8 Diagram 8 shows a transistor circuit. The circuit is used to automatically switch

on the bulb at night.

Rajah 8 itu menunjukkan satu transistor di dalam satu litar. Litar itu digunakan

untuk menghidupkan mentol secara automatic pada waktu malam.

(a) (i) Name component Q

Namakan komponen Q

..

[1 mark]

[1 markah]

(ii) State two functions of component Q?

Apakah dua fungsi komponen Q?

...

[2marks]

[2 markah]

(b) What is the function of resistor R?

Apakah fungsi perintang R?

...

[1 mark]

[1 markah]

2

1

1

Diagram 8

Rajah 8

M

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SECTION B

Bahagian B

[20 marks]

[20 markah]

Answer any one question from this section.

Jawab mana-mana satu soalan daripada bahagian ini.

9. (a) Diagram 9.1 and 9.2 shows two different situations that happen in our daily

life. Diagram 9.1 shows a hand touching a hot kettle and Diagram 9.2 shows

a hand holding an ice. Both are having different temperatures. The arrow

in both diagrams indicates the direction of heat flow.

Rajah 9.1 dan 9.2 menunjukkan dua situasi yang berlaku didalam

kehidupan seharian. Rajah 9.1 menunjukkan tangan tersentuh cerek

yang panas dan Rajah 9.2 menunjukkan tangan memegang seketul ais.

Kedua-duanya mempunyai suhu yang berbeza.

(i) What is meant by temperature?

Apakah yang dimaksudkan dengan suhu?

[ 1 mark ]

[1 markah]

(ii) Using Diagram 9.1 and 9,2, compare the temperature of the objects, the effect

of heat experienced by the hands and the direction of heat flow.

Menggunakan Rajah 9.1 dan 9.2 bandingkan suhu kedua-dua objek dan kesanhaba yang dirasai oleh kedua-dua tangan dan arah pengaliran haba.

Relate the direction of the heat flow to the difference in temperature between

objects which are in thermal contact.

Hubungkaitkan arah pengaliran haba dengan perbezaan suhu antara objek

yang bersentuhan secara terma

[ 4 marks ]

[4 markah]

Diagram 9.1

Rajah 9.1

Diagram 9.2

Rajah 9.2

hand hand

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(b) Diagram 9.3 shows the phenomenon of sea breeze which occur during the day.

Explain this phenomenon.

Rajah 9.3 menunjukkan fenomena bayu laut yang berlaku pada waktu siang.

Terangkan bagaimana ia berlaku.

[ 5 marks ]

[5 markah]

(c) Diagram 9.4 shows a desk lamp placed on a desk used by a student.

This type of lamp is not suitable to be used as a study lamp.Rajah 9.4 menunjukkan sebuah lampu meja yang digunakan oleh seorang

Pelajar. Lampu ini tidak sesuai digunakan sebagai lampu untuk belajar

Diagram 9.4

Rajah 9.4

Explain the modifications that can be made to improvise the desk lamp used

by the student.

Terangkan pengubahsuaian pada lampu meja yang dapat digunakan oleh

pelajar tersebut.

Emphasize your explanation in the following aspects:

Dalam penerangan anda berikan penekanan bagi aspek-aspek berikut:

(i) comfort the person who will use the lamp.

memberi keselesaan kepada pengguna

(ii) to reduce the heat transfer for the desk lamp

mengurangkan pemindahan tenaga haba

(iii) the design of the lamp desk

reka bentuk lampu meja tersebut

(iv) safety features of the lamp

ciri-ciri keselamatan untuk penggunaan lampu

(v) the energy efficiency of the lamp

kecekapan tenaga lampu itu. [ 10 marks ]. [10 markah]

Diagram 9.3

Rajah 9.3

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10. (a) The lamps in a house are connected in parallel to the main supply.

Diagram 10 shows two bulbs are connected to a switch and a dry cell.

Lampu yang dipasang di rumah disambung selari kepada bekalan kuasa.

Rajah 10 menunjukkan dua mentol disambung ke satu suis dan satu sel

kering.

(i) Based on Diagram 10, draw the electric circuit diagram in your answer

sheet.

Berdasarkan Rajah 10, lukis rajah litar elektrik di kertas jawapan anda.

[3marks]

[3 markah]

Diagram 10

Rajah 10

(ii) Each bulb is labelled 1.5V, 3W. What is meant by 1.5V , 3W ?

Setiap mentol itu berlabel 1.5V, 3W. Apakah yang dimaksudkan.

dengan 1.5V, 3W

[2marks]

[2 markah]

(iii) Compare the brightness of bulb A and bulb B, when the switch is on.

Bandingkan kecerahan mentol A dan mentol B apabila suis

dihidupkan?

[1mark]

[1 markah]

(iv) Determine the current in the circuit when the switch is on?

Hitungkan arus dalam litar apabila suis dihidupkan?

[2marks]

[2 markah]

(v) Calculate the energy consumed by the two bulbs if they are switched on

for 1 hour.

Kirakan tenaga yang digunakan oleh kedua-dua mentol itu jika

dihidupkan selama 1 jam

[2marks][2 markah]

A

B

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(b) As an engineer you are given the task of determine the type of

wire that is suitable to be used for connecting electric devices in a house.

Sebagai seorang jurutera anda diberikan tugas untuk menentukan jenis dawai

yang sesuai digunakan sebagai dawai penyambung di dalam sebuah rumah

Explain the suitability of the following aspect of the wire.Terangkan kesesuaian dawai itu dalam aspek berikut.

(i) resistance of wire

rintangan dawai

(ii) melting point of wire

takat lebur dawai

(iii) density of wire

ketumpatan dawai

(iv) rate of rusting of wire

kadar pengaratan dawai

(v) rate of expansion of wire

kadar pengembangan dawai

[10marks]

[10 markah]

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SECTION C

Bahagian C

[20 marks]

[20 markah]

Answer any one question from this section.

Jawab mana-mana satu soalan daripada bahagian ini.

11. Diagram 11.1 shows a machine controlled by a worker to dump soil.

A hydraulic system helps to move the bucket containing soil.

Rajah 11.1 menunjukkan mesin dikendalikan oleh seorang pekerja untuk

membuang tanah. Sistem hidraulik digunakan untuk menggerakan bekas berisi

tanah.

Diagram 11.1

Rajah 11.1

(a) What is meant by pressure?

Apakah maksud tekanan?

[1 mark ]

[1 markah ]

(b) Using a concept of pressure in liquid, explain why the hydraulic system in

this machine is known as a force multiplier.

Menggunakan konsep tekanan di dalam cecair, terangkan mengapa sistem

hidraulik ini dikenali sebagai pengganda daya.

[4 marks]

[4 markah]

Hydraulic system

Sistem hidraulic

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(c) Diagram 11.2 shows a hydraulic jack lifting the back portion of the car.

Rajah 11.2 menunjukkan jet hidraulik digunakan untuk menaikkan bahagian

belakang kereta.

Diagram 11.2Rajah 11.2

Table 11.3

Jadual 11.3

Table 11.3 shows four type of liquid, K, L, M, and N, with different specifications.

You are required to determine the most suitable liquid that can be used as ahydraulic fluid in the hydraulic jack.

Study the specifications of all the four types of liqiud from the following aspects:

Jadual 11.3 menunjukkan empat jenis cecair, K,L,M, dan N, dengan spesifikasi

yang berbeza. Anda dikehendaki menentukan cecair yang paling sesuai

digunakan sebagai sebagai cecair hidraulik dalam jet hidraulik.

Kaji spesifikasi keempat-empat jenis cecair itu dari aspek berikut:

Type of

liquid

Jenis cecair

Boiling point

/ C

Takat didih/

C

Specific heat capacity/

J kg-1

C-1

Muatan Haba Tentu/

J kg-1 C-1

Density/

Ketumpatan/

/kg m-3

Rate of

vaporation

Kadar

pengewapan

K 357 140 13600Low

Rendah

L 130 2500 800 LowRendah

M 100 4200 1000Average

Sederhana

N 55 2200 790High

Tinggi

Reservoir

takunganOmboh besar

Minyak

hydraulic

Injap A Injap B

Omboh kecil

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12. An echo sounder on a ship produces a pulse of sound. A fishing boat uses

the sound echo to determine the depth of seabed. You are assigned to

investigate the suitable characteristics of the waves that could be used to

determine the depth the seabed.

Pemantul gema di atas kapal menghasilkan gelombang bunyi. Bot nelayanmenggunakan pemantul gema untuk menentukan kedudukan kedalaman laut

Anda ditugaskan untuk menyelidik ciri-ciri gelombang yang sesuai

digunakan untuk menentukan kedalaman dasar laut.

Diagram 12.1

Rajah 12.1

a) . State one phenomenon of waves that produces echo

Nyatakan satu fenomena gelombang yang menghasilkan gema

[ 1 mark ]

[1markah]

b. Radio waves is used to detect the position of an aeroplane and sonar

technique is used to detect the shoal of fish below the boat.

(i) State the difference between radio waves and sound waves.

(ii) Explain why the speed of sound is greater in water than that in air?

Gelombang radio digunakan untuk mengesan keddukan kapal terbang danteknik sonar digunakan untuk mengesan kedudukan ikan dibawah kapal.

(i) Nyatakan perbezaan antara gelombang radio dan gelombang bunyi.

(ii) Terangkan kenapa halaju bunyi lebih tinggi dalam air berbanding dalam

udara?

. [ 4 marks]

[ 4markah]

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c) Table 12.2 shows the specification of five waves P,Q,R,S and T that can be used

to determine the position of a shoal of fish.

Jadual 12.2 menunjukkan spesifikasi lima gelombang P,Q,R,S dan T boleh

Digunakan untuk menentukan kedudukan sekumpulan ikan.

Name ofwaves

Nama

Gelombang

Type ofwaves

Jenis

Gelombang

Frequency/HzFrekuensi/Hz Speeds/ ms

-1

Kelajuan/ms-1 Penetrating PowerKuasa Penembusan

P Transverse

Melintang

High

tinggi

3x108

Low

Rendah

Q Longitudinal

Membujur

Low

Rendah

330 Moderate

Sederhana

R Transverse

Melintang

High

Tinggi

330 Low

Rendah

S Longitudinal

Membujur

High

Tinggi

1500 High

TinggiT Transverse

Melintang

Low

Rendah

3x108

High

Tinggi

Table 12.2

Jadual 12,2

You are required to determine the most suitable waves. Study the waves based

on the following aspects:

Kamu dikehendaki menentukan gelombang yang paling sesuai digunakan

Berdasarkan sifat berikut.

i) The type of the waves transmittedJenis gelombang yang di pancarkan

ii) The frequency of the waves

Frekuensi gelombang

iii) The speed of the waves

Kelajuan gelombang

iv) Penetrating power of waves

Kuasa penembusan gelombang

[10 marks][ 10 markah]

(d) (i) If the time taken for the return of the wave is15

1s , calculate the depth

of the shoal of fish below the boat if the speed of sound in water is

1500 ms-1

.

Jika masa yang diperlukan untuk gelombang pergi dan balik ialah15

1s ,

Hitung kedalaman kedudukan ikan jika halaju bunyi dalam air ialah1500 ms-1

.

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TRIAL JPNS PHYSICS ANSWER PAPER 2

SECTION A

Question

Number

Answer Full

Mark1.(a) (i) base quantity is a quantity that cannot be defined in any other physical

quantity

1

(ii) ms-2

1

(b) Base quantity - time / displacement

Derived quantity - velocity / accelerationScalar quantity time

Vector quantity - displacement / acceleration

1

1

Total 4

Question

Number

Answer Full

Mark

2.(a) Convex mirror 1

(b) Convex mirror has a wider view than a plane mirror. 1

(c)(i)

Note :

Draw two incident rays and each of them reflected at thecorrect path.

1 mark

Shows image formed behind the mirror and the position infront of F.

1 mark

2

(ii) Virtual ,upright and diminished. (any of two combination) 1

Total 5

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Question

Number

Answer Full

Mark

3(a) Step-down transformer 1

(b) A.u. power supply, Vp can produce a changing magnetic field thatinduces an alternating e.m.f in the secondary coil, Vs.

1

(c) Using a formula , Np = VpNs Vs

Np = 240V

Ns 12V

Np : Ns = 20 : 1

1

1

(d)(i) Bulb will not light up 1

(ii) Because transformer cannot function using direct current/cannot produce change in magnetic flux

1

Total 6

Question

Number

Answer Full

Mark

4(a) W = mg= (50)(10)

= 500 N 1

(b)(i) Increase 1

(ii) Decrease 1

(iii) Stationary / at 500N 1

(c) No resultant force/acceleration zero 1

(d) R = (46)(10)

= 460 Nmg-R = ma

500 460 = 50a

a = 0.8 ms-2

1

1

Total 7

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Question

Number

Answer Full

Mark

7(a)(i) Function for safety purpose/To ensure the maximum weight limit 1

(ii) F = mg= 7500 x 10= 7.5 x 104 N

11

(iii) The mark should be higher than the sea water level 1

(iv) 1. density of sea water is denser than the density of river water.

2. the volume of water displaced increased when density of liquid decrease

2

(b)(i) Upthrust = Weight 1

(ii) Accelerates upwards or moves upwards 1

(iii) 1. the weight of the air balloon is decreased2. buoyant force /upthrust higher than weight

3. the balloon experiences the unbalanced force.(any two answers)

2

Total 10

Question

Number

Answer Full

Mark

8(a) (i) npn transistor 1

(ii) as a switch/automatic switchamplifier

11

(b) to limit the current to the transistor 1

(c)( i) VP increaseBecause resistance at P is higher

11

(ii) the transistor will switch on the relay switch

Ib will flow through the transistor and Ic will increase

1

1

(d) 10,000 x 6 = 2

10,000+ S

Resistance, S = 20 000 OR

RS = VS1000 + RS 6

RS = 20 000

1

1

(e) The bulb will not light upbecause it needs higher voltage/current to light up.

11

Total 12

SECTION B

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Question

Number

Answer Full

Mark

9 (a) (i) Temperature is a measurement of the average kinetic energy of the atoms or

molecules in the substance.

OrTemperature is a measurement of degree of hotness of an object.

1

(ii) 1. The kettle is hotter than the ice block / The ice block is colder than the kettle.

2. The hand feels hot when it touches the hot kettle / The hand feels cold whenit touches the ice block.

3. Diagram 9.1 shows heat flows from the kettle towards the hand whileDiagram 9.2 shows the heat flows from the hand towards the ice.

4. The heat will flow from a hotter object towards a colder object.

1

1

1

1

(b) 1. Sea has higher specific heat capacity than land.

2. The temperature of the sea increases slower than of the land.

3. The air above the land is warmer than the air above the sea /Density of air above the land is lower than the density of air above the sea.

4. The warm air above the land rises up.

5. Air from the sea moves towards the land.

1

1

1

1

1

Modification Explanation

1.Use the fluorescent lamp not

a filament bulb

Fluorescent lamp use less power and

economic (consume less power) compare

to filament bulb

2. Bigger cover with white

colour

Less reflection on eyes and absorb less

heat energy and good heat reflector

3. Use the adjustable stand

Or portable

The height of the lamp can be adjusted

Can be used anywhere

4. Connect with the earth wire Avoid short circuit and damage on thebulb

5. Use an energy saver lamp Produce same brightness with less powerconsumption

2

2

2

2

2

Total 20

Question Answer Full

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Number Mark

10(a)(i)

1. Bulbs are connected in parallel 1m

2. Switch and battery are connected in series 1m

3. Correct symbols for all components 1m

3

(ii) When the bulb is connected to a power supply of 1.5V, it will produce 3J of

energy in 1 second.

1

(iii) The brightness of bulb A is the same as bulb B 1

(iv) I = P/V

= 6/1.5= 4A

11

(v) Energy = Pt= 6 x 3600

= 21 600 J

OrEnergy = VIt

= 1.5 x 4 x 3600

= 21 600 J

1

1

(b)

Modification Explanation

Resistance of wire is low to prevent power loss due to heat

Melting point is high to prevent the wire from melting

Density wire is low to reduce the mass of wire / too heavy

Rate of rusting is low to prevent it from rusting easily

Rate of expansion of wire to prevent lengthening of wire

22

2

22

Total 20

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PHYSICS : ANSWER PAPER 3

Question

Number

Answer Full

Mark

1(a) i. Real depth,H 1

ii. Apparent depth,h 1iii.Optical density of glass block

or Refractive index of glass blockor Type of medium

1

(b) Tabulate H and h and show H as the manipulated variable and h asthe responding variable.

H/cm h/cm

2.0 1.3

3.0 2.0

4.0 2.75.0 3.3

6.0 4.0

Give one (1) mark for each of the following :1. Show column for H and h respectively.

2. State the unit for H and h correctly.

3. State the value H up to 1 d.p4. Show the reading of h correctly up to 1 d.p

5. Show consistency of all data up to 1 d.p.

5

(c) Draw a graph of h against H

Give one (1) mark for each of the following :

1. Show h at y-axis and H at x-axis.

2. State the correct unit for both axis.

3. Show uniform scale for both axis.4. Show all data plotted correctly: 5 correct 2m

3-4 correct 1m

5. Draw a smooth and best fit straight line on the graph.6. The minimum size of the graph at least 5 x 4 squares (10

cm x 8 cm) starting from the first point to the last point.

7

(d) i. State the relationship between h and H correctly.(Based on the students graph) 1

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h is directly proportional to H

TOTAL 16

Question

Number

Answer Full

Mark

2 (a)(i) Show the extrapolation on the graph1

R is directly propotional toA

11

(ii) Show on the graph R = 1.6 1

When R = 1.6 ,A

1= 0.90 mm

-2 1

Hence, A = 1.1 mm2 1

(iii) Gradient of the graph

- draw triangle on graph1

= 1.8 01.02 - 0

= 1.76 mm2

1

1

(b)(i)R =

A

l

Hence, resistivity = gradient

l

= 1.76 mm2

150 mm

= 1.17 x 10-2 mm

OR = 1.17 x 10-5

m

1

1

1

(vii) -Use small value of current to avoid the wire from

getting too hot easily/-Make sure the all the connections all the tightly

connected/

-Switch off the circuit if no reading is taken to avoidwire from getting too hot

1

TOTAL 12

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Question

Number

Answer Full

Mark

3 (a) The volume of the snack pack influenced by / effected by / depends

on the atmospheric pressure of the surrounding. 1

(b) For a fixed mass and at constant temperature of a gas, its volume

will increase when the pressure decreases.

orThe volume of a gas increases when the pressure decreases.

1

(c)(i) To investigate the relationship between the volume and thepressure of a gas at fixed mass and temperature.

1

(ii) Manipulated variable :Volume of a gas, V

Responding variable :Gas pressure,P

Constant variable :Gas temperature,T / mass of a gas,m

1

1

(iii) Bourdon gauge, a syringe with volume scale and rubber tube 1

(iv)

1

(v)

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1. The piston of the syringe is pressed down slowly until the volume

of air inside is 120 cm3.

2. The pressure of the air in the syringe is read from the Bourdon

gauge.

3. The experiment is repeated with volume of air inside the syringeat 100 cm3, 80 cm3 , 60 cm3 , 40 cm3 and 20 cm3.

1

1

1

(vi) Volume , V / cm3 Pressure , P /Pa

120

100

80

60

40

20

1

(vii)1

TOTAL 12

Question

Number

Answer Full

Mark

4 (a) The strength of the magnetic field depends on the current flows in

the wire.

1

(b) The greater the magnitude of current, the stronger the magnetic

field.

1

(c) (i) To investigate the relationship between the current flows in the wire

and the strength of the magnetic field of an electromagnet.

1

Volume, V/cm3

Pressure, P/Pa

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(ii) Manipulated variable : the current in the solenoid

Responding variable : the strength of the magnetic field.

Fixed variable : number of turns of coils/the type of

core used/distance between the endof the soft iron rod and pins in

the petri dish.

.

1

1

(iii) D.C power supply, ammeter, rheostat, petri dish, retort stand with

clamp, a box of pins, soft iron rod, insulated copper wire andconnecting wires.

1

(iv) Set up the apparatus as shown in the figure.

1

(v) Start the experiment with 0.2A of current. Turn on the switch. Bringthe Petri dish of drawing pins near the lower end of the rod.

1

(vi) Count the number of pins attracted to the rod. Turn the switch offthe to allow the pins to fall back into the petri dish.

Repeat the experiment by varying the current with 0.3A, 0.4A, 0.5A

and 0,6A.

1

1

(vii)Current/A Number of pins attracted

0.2

0.30.4

0.5

0.6

1

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(viii)

1

TOTAL 12

Number of pins attracted

Current

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