Download - Spm Trial 2012 Physics Qa Kedah

7/30/2019 Spm Trial 2012 Physics Qa Kedah

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PROGRAM PENINGKATAN PRESTASI AKADEMIK SPM

TAHUN 2012

FIZIK

Kertas 1

PERATURAN PEMARKAHAN

Peraturan pemarkahan ini mengandungi 2 halaman bercetak

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2

PHYSICS

PAPER MARKSPaper 1 50Paper 2 100Paper 3 40

Total 190

Jumlah markah diskalakan kepada 100%

Paper 1

1 C 26 C2 D 27 D3 C 28 C4 D 29 A5 B 30 D

6 C 31 A7 A 32 B8 B 33 C9 A 34 B

10 B 35 A11 C 36 A12 B 37 D13 B 38 C14 C 39 C15 D 40 D

16 C 41 A17 B 42 D18 A 43 D19 D 44 D20 C 45 A21 B 46 A22 A 47 B23 A 48 C24 A 49 B25 D 50 B

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TAHUN 2012

FIZIK

Kertas 2



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2

SECTION A

MARKNO. MARKING CRITERIASUB TOTAL

1(a) Underline the word correctly 1- transverse

(b) State the factor correctly 1- depth

(c) (i) State the change in the energy correctly 1- decrease

(ii) Name the phenomenon correctly 1 4 - damping

2(a) Name the type of error correctly 1- zero error/systematic error

(b) (i) Give the actual time taken with one decimal place correctly 1- 44.0 s

(ii) Correct expression 1

-2044

Correct answer and correct unit 1- 2.2 s

(c) State the change in period of oscillation correctly 1 5- increase

3(a) (i) State the speed of light changes from water to air correctly 1- Speed of light increases when propagate from water to air

State the refraction of light ray correctly 1- Light ray is refracted away from the normal

State the location of the image of the fish correctly 1 Any two- Image of the fish is located nearer to the water surface

(ii) Draw the one/two rays correctly 1Location of the image correctly 1

(b) Correct substituition 1

depthapparent1.2

33.1 =

Correct answer and correct unit 1 60.90 m

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4(a) Name the function correctly 1

- as a rectifier/to rectify the current/to make the current flow in onedirection/to convert a.c. to d.c.

(b) (i) Determine the period correctly 10.02 s

(ii) Correct expression 1

-02.01

Correct answer and correct unit50 Hz // 50 s 1

1

(c) Path of the current correctly 1Q D B X Y C A P

(d) Draw the trace correctly 1Inverted from diagram 4.2

(e) State the component correctly 1 7

- capacitor

5(a) State the physical quantity correctly 1- weight

(b) (i) Compare the pressure correctly 1- Pressure acting at B is higher/vice versaExplain correctly- Pressure increase with depth

1

(ii) Explain the force correctly 1- Force acting on point B is higher/vice versa/Force pressure

(c) (i) Compare the readings correctly

- The reading in Diagram 5.1 is higher than in Diagram 5.2

(ii) Relate the reading of the spring balance and the upthrustcorrectly- The higher the reading of the spring balance, the lower the

upthrust

(iii) Compare the density correctly 1- Density of water is higher/vice versa

(iv) State the relationship between density and upthrust correctly 1- The higher the density, the higher the buoyant force

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6(a) Explain the nuclide correctly 1- A nucleus having a specific number of protons and neutrons

(b) Write all the answers correclty with unit 3 marksAny two or three of the answers correct with unit 2 marksAny one of the answers correct 1 mark

236.05259 u, 235.86653 u, 5.030151 u, 5.011273 u 3

(c) (i) State the comparison correctly 1- decreases/less/smaller after the reaction

(ii) State the deduction correctly 1- mass defect (decrease in mass) is converted into energy //

E = mc 2

(d) (i) State the nuclear reaction correctly 1- Nuclear reaction A

(ii) Name the rod correctly 1 8- boron/cadmium

7(a) (i) State the meaning correctly 1- A region where a magnetic force is experienced

(ii) State the reason correctly 1- The cutting of magnetic flux produces a current in the circuit

(b) (i) State the modification correctly 1- replace the slip rings by a split ring // commutatot

(ii) State the component correctly 1- dry cell(s)/battery

(c) Draw the correct resultant field 1

Label the direction of the force correctly 1

(d) (i) State the modification of the coil correctly with reason 2

(ii)

- more turns- To produce a bigger force

State the modification of the magnet correctly with reason- Stronger magnet- Produce a stronger magnetic field

2

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8(a) (i) State the meaning correctly 1- The ability to do work

Correct answer 2(b) Write all the answers correclty 2 marks

Any one or two answers correct 1 mark

(c) (i) Correct substituition 1(48)(10)(3)

Correct answer and correct unit 11440 J

(ii) State substituition 1

9.51440

Correct answer244 W

1

(d) (i) State the choice correctly with reason 2- A- shortest time taken

(ii) State the correctly with reason 2- C-Time is consistent over a longer period

(e) State the reason correctly- Longest average time/time is not consistent/time increases with

each run

1

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SECTION B

MARKNO MARKING CRITERIASUB TOTAL

9(a) State the meaning correctly 1 1- The amount of energy requires to change the temperature of 1 kgof a substance by 1 oC.

(b) (i) State the comparison correctly 1- same

(ii) State the comparison correctly 1- Liquid N is higher / vice versa

(iii) State the comparison correctly 1

(iv)

(v)

- Liquid M is higher / vice versa

State the comparison correctly- Liquid M is faster / higher /vice versa

State the relationship correctlyThe bigger the specific heat capacity, the smaller the rate of increasein temperature

1

1 5

(c) Give the four explanations correctly- high specific heat capacity- high boiling point/not easily volatile / does not evaporate easily- easily available- non corrosive/do not react with metal

1111 4

(d) State the type of material of the outer pot and reason correctly 2- Poor heat conductor- Less heat loss to the surrounding/cooler

State the type of material of the inner pot and reason correctly 2- Poor heat conductor- Heat up slowly

State the space between the inner pot and outer pot correctly 2- Big- Less heat loss

State the power of the heating element and reason correctly 2- Low- Heat up the food slowly/take longer time to heat up the food

State the type of cover of the outer pot and reason correctly- Air tight/transparent

2 10

- Less heat loss/can observe the food inside the slow cooker

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MARK NO MARKING CRITERIA SUB TOTAL

10(a) (i) State the meaning correctly 1 1- Distance between two consecutive creasts/trough

(ii) State the comparison correctly 1

- Region P longer/vice versaState the comparison correctly 1- Region P higher/vice versaState the comparison correctly 1- Region P is deeper/vice versaState the comparison correctly 1- Region P smaller/vice versaRelate the change of speed with angle of deviation correctly 1 5- The smaller the change in speed, the smaller the angle of

deviation/vice versa

(b) (i)

(ii)

Explain how a region of compression is produced

When the prongs of the tuning fork move outward, it produce aregion of compressionExplain how a region of rarefaction is producedWhen the prongs of the tuning fork move inward, it produce aregion of rarefaction

Describe the set up correctly

1

1

1

2

- Candle flame in front of a loud speaker that emits sound wave

Describe the observation correctly 1 2- Candle flame vibrates forward and backward

(c) (i) State the type of wave and reason correctly 2- Ultrasound- Safer/no side effect to the foetus//

can differentiate between layers of different soft tissues

State the frequency of wave and reason correctly 2- high frequency- can penetrate into mothers womb to scan the foetus / does not

diffract easily

State the amplitude of wave and reason correctly 2- small amplitude or high amplitude

- does not harm the foetus or to produce clearer image

State the use of the layer of gel and reason correctly 2 8- Allow the transducer to move easily on the skin//

Helps the sound waves to transmit into the body- Reduce frictional force//produce better sound contact between

the transducer and the skin

(ii) Give the phenomenon of wave correctly- reflection

1 1

(iii) State the usage correctly- determine the depth of the sea- locate the position of a shoal of fish

1 1

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SECTION C


11 (a) (i) State the meaning correctly 1 1- Reciprocal of the focal length //

f 1

(ii) Correct substitution for power 1

51

// 5

100

State the answer with unit correctly 1 20.2 m // 20 cm

(iii) Correct substitution for the focal lengths 1

520

State the answer correctly 1 2

4

(b) (i) State the correct relationship 1 1- The thicker the lens, the higher the power

(ii) Describe the method correctly 4 4- Place the lens to receive light from a distant object- Adjust the screen to obtain a sharp image- Measure the distance between the lens and the screen, d

- Power =d 1

111

1

(c) State the choice and reason of type of mirror correctly 1+11 concave2 to converge light to the focal pointState the choice and reason of distance between slide and

projector lens correctly 1+1

3 f < u < 2 f 4 to produce real, inverted and magnified imageState the choice and reason of orientation of slide correctly 1 + 15 inverted6 to produce final upright image on the screenState the choice and reason of power of projector lens correctly 1 + 17 high8 to produce bigger / magnified imageState most suitable slide projector and justification correctly 1+1 109 P10 Concave mirror, f < u < 2 f , inverted slide, high power projection

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12(a) State the meaning correctly 1 1- Rate of flow of charge

(b) State the explanation correctly- dry cells have internal resistance - L1 and L 2 are connected in parallel // effective resistance of the

circuit decreases- current supplied by the battery increases // voltage lost in the

battery increases- voltage applied across the bulbs decrease

1

1

11 4

(c) State the suitable type of bulb and reason correctly 1+11 Fluorescent2 Lasts longer // uses less energy // lower power // high

efficiency State the suitable input power and reason correctly 1+13 Low4 Less cost of electricity State the suitable efficiency and reason correctly 1+15 High6 Less wastage of energy // Saves energyState the suitable type of connection and reason correctly 1+17 Parallel8 Lamps can be switched on independently // If one lamp blows,

the others can continue to be lighted up State most suitable choice of radioisotope and justificationcorrectly

1+1 10

9 R10 fluorescent bulb, low input power, high efficiency and parallel

connection

(d) (i) State the reading of the voltmeter correctly 1- 4 V

(ii) Correct substitution for V and R 1

54

Correct answer with unit 10.8 A

(iii) Correct substitution for V and I 1

8.02

Correct answer with unit 1 52.5

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TAHUN 2012

FIZIK

Kertas 3



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SECTION A


1(a) (i) State the manipulated variable 1 1- mass / m

(ii) State the responding variable 1 1- increase in temperature /

(iii) State a constant variable 1 1- Initial temperature / o // Heating time // Heat supplied // Specificheat capacity

(b) (i) Record five values of 1

m 1 1

Diagram 1.3 : 5.00

Diagram 1.4 : 3.33Diagram 1.5 : 2.50Diagram 1.6 : 1.67Diagram 1.7 : 1.25

(ii) Record six thermometer readings 1 1Diagram 1.1 : 24 o

Diagram 1.3 : 36 o Diagram 1.4 : 32 o

Diagram 1.5 : 30 o

Diagram 1.6 : 28 o

Diagram 1.7 : 27 o

(iii) Record five values of 2 2Diagram 1.3 : 12 o

Diagram 1.4 : 8 o

Diagram 1.5 : 6 o

Diagram 1.6 : 4 o

Diagram 1.7 : 3 o Note: Any three readings correct, award 1 mark

Accept e.c.f. from (b)(ii)

(c) Tabulate the results

- Heading for m , 1m , and 1

- State all the units of m , 1m , and correctly 1

- The values of 1m are consistent to two decimal places and ,

to whole number1 3

m / kg1m / kg

-1 / oC / oC

0.20 5.00 36 120.30 3.33 32 80.40 2.50 30 60.60 1.67 28 40.68 1.25 27 3

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3(d) Draw a complete graph of against

1 m 5

Tick ( ) based on the following aspects

A Show on vertical-axis and1m on the horizontal-axis

B State the units of the variables correctly C Both axes are marked with uniform scale

D All five points are plotted correctly(Note: If only three points plotted correctly, award )

E Best straight line is drawn F Show the minimum size of graph at least 5 x 4

(2 cm x 2 cm) square(counted from the origin until the furthest point)

Score :Number of Score

7 55-6 43-4 32 21 1

(e) State the correct relationship between and1m 1

is directly proportional to1m

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2(a) (i) State the relationship between T and x- T decreases linearly with x 1

(ii) State the value of T within the acceptable range- Show graphical extrapolation correctly 1

- State the value within acceptable rangeT = (0.59 0.61) N 1(iii) State the physical quantity correctly

- Weight /W 1 4(b) State the value of x within the acceptable range

- Show graphical intrapolation correctly 1- State the value within acceptable range

x = (0.64 0.68) cm 1 2(c) Calculate the gradient of the graph, k and state the value of k

within the acceptable range- Draw a sufficiently large triangle at least 3 x 3 (2 cm x 2 cm)

square 1- Correct substitution (follow candidates triangle)

Sample answer:

k = -0.6 - 01.0 - 0 1

- State the correct value / answer with correct unit(0.58 - 0.62) N cm -1 Accept negative value for the answer

1 3

(d) Calculate the value of correctly using the given formula- Correct substitution

=0.60

7.2 x 10 -4

Accept e.c.f. for k 1- State the correct answer / value

= 833.3 kg m -3 = (805.6 - 861.1) kg m -3 1 2

(e) State the correct precaution 1 1

- The scale reading of the spring balance is taken when thewooden block stops oscillating

- Place the eyes perpendicularly to the scale of spring balanceand the metre rule

- Repeat the readings and take the average value12

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SECTION B


3 (a) State a suitable inference- The pressure of the gas depends on its volume 1 1

(b) State a relevant hypothesis- The smaller the volume, the higher the pressure 1 1

(c) Describe a complete suitable experimental framework(i) State the aim of experiment

To investigate the relationship between the volume of a gas and itspressure 1

(ii) State the manipulated variable and the responding variable

Manipulated variable : VolumeResponding variable : PressureState the constant variableConstant variable : Mass of gas // Temperature

1

1

(iii) List out the important apparatus and materialsSyringe, rubber tube, slotted weights, Bourdon gauge 1

(iv) Draw a functional arrangement of apparatus 1

(v) State the method to control the manipulated variableSlotted weights are placed on the piston of the syringe until thevolume of air in the syringe is 40 cm 3 1

State the method to measure the responding variableThe corresponding reading of the Bourdon gauge is measured 1

Repeat the experiment at least four timesRepeat the previous steps for different volumes of 35 cm 3, 30 cm 3,25 cm 3 and 20 cm 3 1

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6(vi) State how the data is tabulated

Volume / cm -3 Pressure4035302520

1(vii) State how the data is analysed

Plot a graph of pressure against volume. 1 1012

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4 (a) Able to state a suitable inferenceSample answerThe diameter / thickness of a wire affects the current in the wire // The diameter / thickness of a wire affects the resistance of the wire // The diameter / thickness of the wire affects the brightness of thebulb

1 1

(b) Able to state a suitable hypothesisSample answerThe bigger the diameter of a wire, the bigger the current in the wire 1 1

(c) Able to describe a complete experimental framework

(i)Sample answerState the aim of experimentTo investigate the relationship between the diameter of a wire andthe current in the wire

1

(ii) State the manipulated variable and the responding variableManipulated variable : diameter Responding variable : currentState the constant variableConstant variable : length of wire // material of the wire

1

1

(iii) State the complete list of apparatus and materialsConstantan wires, metre rule, ammeter, battery, connecting wires 1

(iv) Draw a functionable arrangement of the apparatus 1

(v) State the method of controlling the manipulated variableThe circuit was set up with diameter, d = 0.5 mm of constantan wire 1

State the method of measuring the responding variableThe current, I , was measured with an ammeter. 1

Repeat the experiment at least four timesThe procedure was repeated with diameter of, d = 1.0 mm, 1.5 mm, 1

Constantan wireA

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