# [spmsoalan]modul perfect score physic sbp 2014

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PERFECT SCORE MODULE 2014

Sekolah Berasrama Penuh

Kementerian Pelndidikan Malaysia

PHYSICS

Beyond

Norsaidah (TKC) Jennyta (SASER) Haslina (SEMASHUR)

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TABLE OF CONTENT

PHYSICS PERFECT SCORE 2014 PANELS

NORSAIDAH BT HASSAN - Kolej Tunku Kurshiah (TKC)

( Head of Panels )

HASLINA BT ISMAIL - SMS Hulu Selangor (SEMASHUR)

JENNYTA BT NOORBI – SMS TUANKU MUNAWIR (SASER)

….From Physics panels, we would like to wish you all the best in your SPM 2014 examination. Make SBP, your parents and teachers proud of you…

SECTION CONTENT Page

A Diagnostic Test

Analysis

1 – 26

27 - 28

B

Enhancement

Question

1. Force & Motion 29 - 30

2. Force and Pressure 30 - 33

3. Heat 34 - 37

4. Light 37 - 41

5. Waves 41 - 42

6. Electric 43 – 44

7. Electromagnet 45 – 47

8. Electronic 47 - 50

9. Radioactivity 50 - 52

10. Basic Mathematics / Science Skill 53 - 55

We are family.

“We are one you and I, we are like the earth and sky. ONE FAMILY under the sun." Disney's The Lion King 2 song- Simbas Pride.

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SECTION A:

DIAGNOSTIC TEST

1 Diagram 1 shows the velocity – time graph for the motion of a car

Calculate the displacement traveled by the car.

A 80 m B 100 m C 120 m D 140 m

2 Diagram 2 shows a trolley is moving down on a friction compensated runway

Diagram 2

Which of the following statements is true about the trolley?

A It moves with acceleration.

B It moves with constant velocity

C It remains stationary.

3 Diagram 3 shows a picture is hanging on a wall. Three forces T1, T2 and weight, W are

acting on the picture

T1

T2

Diagram 3

Velocity/m s-1

Time/s 0

4

8

-4

-8

5 10 15

20 25

Diagram 1

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Which of the following vector diagrams, represents the forces which act on the

picture are in equillibrium?

A B

C D

4 Diagram 4shows a box of mass 5 kg is pulled by a force of 100 N at the angle of 60⁰ to

the horizontal plane. The frictional force acting towards the box is 10 N.

100 N

60o

10 N

Diagram 4

Calculate the acceleration of the box.

A 5.0 m s-2 B 8.0 m s-2

C. 10.0 m s-2 D 15.3 m s-2

5 Diagram 5 shows a trolley of mass 500g is sliding down a smooth curved ramp.

Smooth curved ramp 15 m

v

Diagram 5

What is the speed, v of the trolley?

A 4.0 m s-1

B 17.3 m s-1

C 3.5 m s-1

D 75.0 m s-1

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6 Diagram 6 shows a graph of force, F, against the extension, x , of the two springs,

and Q

F / N

P

Q

0 X / cm

Diagram 6

Based on the graph, which of the following statements is true ?

A Spring Q needs a bigger force than spring P to produce the same extension

B The diameter of spring Q is bigger than spring P C Both spring are made of the same material D Spring P is easier to extend than spring Q

7 Diagram 7 shows a ship floating on the surface of the sea. The density of ocean water

at the sea surface is 1027 kg m-3. The volume of the ship below the water level of the

sea is 1500 m3

Diagram 7

What is the weight of the ship?

A 1.46 x 103 N B 1.54 x 106 N C 1.61 x 106 N D 1.54 x 107 N

8 Water pressure determines the flow of water from the tap. The amount of pressure at

your tap can depend on how high the service reservoir or water tower is above your

home, or on how much water other customers are using. The height of your property

can also affect your water pressure. Diagram 8 shows a water tank that supplies water to

a three storey building.

Diagram 8

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What is the total pressure at tap Y?

(Density Of Water = 1000 Kg M-3

, Atmospheric Pressure = 1.0 X 105

Pa)

A 9.0 x 104 Pa B 1.2 x 105 Pa C 1.9 x 105 Pa D 2.2 x 105 Pa

9 Which graph shows the correct relationship between pressure, P and depth, h?

10 Diagram 9 shows a simple mercury barometer. The height of the mercury level is h.

Diagram 9

What happens to the value of h when mercury is added to mercury reservoir?

A Increases B Decreases C Remains constant

11 Diagram 10 shows a hydraulic compressing machine.

Diagram 10

Diagram 11

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Which comparison is true about the forces F1 and F2?

A F1 < F2 B F1 = F2 C F1 > F2

12 A buoy is a floating object which is anchored to the bottom by a long rope or cable to

keep it from drifting away. Diagram 11 shows three buoys, X, Y and Z used to warn ships

about wrecks or other dangers.

Diagram 11

Which of the following is correct for the density of buoy X, Y and Z?

A X = Y = Z B Z > X > Y C Y > Z > X D Z > Y > X

13 Diagram 12 shows two identical containers, P and Q containing objects Y and X which

have the same size but of different densities. The upthrust, FP and FQ are exerted on the

container P and Q respectively.

Diagram 12

Which comparison of upthrust is correct?

A FP > FQ B FP = FQ C FP < FQ

14 Diagram 13 shows a toy ball of volume V floating with above water.

Diagram 13

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If the density of water is ρ, what is the buoyant force acting on the toy duck?

A ρg B gVρ C ρVg D

15 Which diagram shows the correct liquid level in the tube?

A

C

B

D

16 Diagram 14 showsan oven isusedto bakea cake. After45 minutes,the cake reaches

thermal equilibrium.

Diagram 14

When is thermal equilibrium reached?

A When allthe heat from theoven has transferred to the cake

B When the netrate ofheattransfer between the cake andthe oven is equal

C When the temperatureofthe cakeis equal to the temperatureof theoven.

D When the temperature released by the oven is equals to the temperature

gained by the cake

17 When water boils at 1000C, the heat absorbed by the water

A is lost to the surroundings

B makes the steam molecules moves randomly

C increases the kinetic energy of the water molecules

D overcome the forces between the water molecules

18 Diagram 15 sshows threeflat bottom flasks L, M and N contain 100 gof ethanol,

200gofwater and 100 gof water respectivelyat thesameinitial temperature. The heat is

supplied at the same rate. After 3 minutes the temperature, Tofliquid in flasks L, M, and N

are recorded.

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Diagram 15

Which comparison is correctabout thetemperatureof liquid, T in flask L, M, and N, if the

specific heat of ethanolisless than the specificheat of water?

A TN <TL <TM B TL<TM <TN C TM<TL<TN D TL<TM , TM= TN

19 Diagrams 16 shows a lead block, an iron block and aluminium block. All blocks have the

same mass and same initial temperature and let to be cold. All blocks have different

specific heat capacity. After 15 minutes the difference in temperature of the blocks, θ

are recorded.

Diagrams 16

Which comparison is correct about the difference temperature of lead block, θL , iron

block, θI, and aluminium block, θA is correct?

A θA>θI>θL B θI >θL>θA C θL>θI>θA D θA >θL >θI

20 Different materials melt at different temperatures. The chart shows the melting points of

some materials you know. You might find some of these materials in your kitchen.

Iron Block Lead Block Aluminium Block

c = 460 J kg-1 oC-1 c = 130 J kg-1 oC-1 c = 910 J kg-1 oC-1

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Which of the following best describes the process of melting chocolate in your mouth at

a steady rate from a temperature of -15 0C until it reaches your mouth temperature (oral

temperature) which is 37°C?

A C

B D

Temperature, (oC)

0 time, (s)

37 -

-15 -

Temperature, (oC)

0 time, (s)

37 -

-15 -

Temperature, (oC)

0 time, (s)

37 -

-15 -

Temperature, (oC)

0 time, (s)

37 -

-15 -

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21 Diagram shows sea breeze phenomena.

The phenomena is due to

A seais as warm as land C land is warmer thansea

B seais warmer than land

22 Tyre pressure, fluid levels and windscreen wipers should all be checked often and

particularly before a long drive to avoid being left at the side of the road. Diagram

shows the air pressure in car tyres before and after a long drive.

(1 pound per square inch, psi =6 894.76 Pa)

This can be explained by

A Pressure‟s law. C Boyle‟s law.

B Charles‟ law. D Hooke‟s law

LEFT FRONT

Before: 35 psi

After : 38 psi

RIGHT FRONT

Before: 35 psi

After : 38 psi

LEFT REAR

Before: 35 psi

After : 38 psi

RIGHT REAR

Before: 32 psi

After : 35 psi

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23 Syikin wants to set „Girl Blue Eyes Bubbles Water Art HD Wallpaper‟ (Diagram below) on

her desktop as background..

She observes that the size of the air bubbles increases as it reaches the surface. Which

law explains the situation above?

A Pressure Law C Charles‟ Law

B Boyles‟s Law D Snell‟s Law

24 Diagram shows acapillarytubecontainingsometrappedair insideit. At 27° C, the vertical

column of trapped air is 10.0 cm.

The capillarytubeis heated untilthe vertical column of trapped airexpands to 10.7cm.

Whatis the final temperatureof the trapped air?

A 29°C B 48°C C 54°C D 321°C

25 Diagram shows Mr. Zain is having a hair cut in a barber‟s shop.

1 m 0.2 m

The barber uses plane mirror Q to help Mr. Zain to see the back of his head. If Mr. Zain is

facing plane mirror P, what is the distance between Mr. Zain and the first image of the

back of his head formed by plane mirror P?

A 1.4 m B 2.0 m C 2.2 m D 2.4 m

http://www.jantoo.com/cartoons/keywords/barbershops

http://www.jantoo.com/cartoons/keywords/bar

bershops

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26 Diagram shows a toy penguin placed in front of a concave mirror

http://fphoto.photoshelter.com/image/I00002NWBTZktBbY

Which of the following shows the correct relationship between the object distance, u

and the focal length, f to explain the situation?

A u < f B u = f C u > f D u > 2f

27 Which of the following combination correctly show the path of the light that strikes the

surface of the mirror?

A

B

C

D

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28 Diagram shows a ray of light travels through a glass block.

What is the refractive index?

A sin p/sin q C sin s/sin r

B sin q /sin s D sin t/sin p

29 Diagram shows a layer of oil floating on water. Which light ray in Diagram 24 is correct?

30 Diagram shows a situation when an object viewed underwater. The object appears

shallower than it actually is.

What is the refractive index?

A x/z C x/y B y/z

Light ray

Water

Oil

D

C

A

B

glass

x

y

z

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31 Diagram shows a light ray traveling from air into a semi-circular glass block. The critical

angle of the glass is 42 0, which path of the ray of light is correct?

32 Diagram shows the formation of the image of an object by a convex lens.

What is the focal length of the lens?

A 0.2 cm C 5.0 cm

B 1.2 cm D 6.0 cm

33 Given u is object distance, v is image distance and f is focal length, which of the

following is valid for thin lenses?

A f =

vu

1

C

f

1 =

vu

uv

B

f

1 =

vu

1

D f =

vu

uv

34 Diagram shows the arrangement of two convex lenses P and Q of an astronomical

telescope at normal adjustment. The power of lens P is 5 D and lens Q is 25 D.

Lens P Lens Q

Incident ray

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Calculate the distance between lenses P and Q.

A 2.04 cm B 20.0 cm C 24.0 cm D 30.0 cm

35 Diagramshows the image of the object seen under a magnifying glass.

fphoto.photoshelter.com

The position of the object must be

A Less than f C Equal to 2f

B Between f and 2f D. More than 2f

36 Diagram shows the displacement-timegraph of awave.

What is the frequencyofthe wave?

A 0.25 Hz. C 2 Hz

B 0.5 D 4 Hz

37 A transverse wave is travelling to the right along a rope. Diagram represents a

photograph of the wave pulse at a particular instant.

The movement of the particles X and Y at the instant will be

X Y

A Downward Downward

B Upward Downward

C Downward Upward

D Upward Upward

Direction of wave motion

X Y

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38 Diagram shows the displacement- distance graph of a wave.

Which ofthe following is correct?

A The amplitude is 2.0 cm B The wavelength is 4.0 cm

C The period of oscillation is 4.0 s D The number of oscillation in 2 s is 0.5

39 Diagram shows agraph of an oscillation system which is experiencing damping.

Which ofthe followingquantitydoes not change?

A Sizeof oscillation C Energyof oscillation

B Period ofoscillation D Amplitude ofoscillation

40 A set of plain water waves in a ripple tank travels over a triangular perspex plat. Which

of the following shows the correct wave pattern?

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41 Diagram shows an interferencepatternofwaterwavesfromtwocoherentsources M and N.

Which point is the node?

42 Radio waves, visible light and X- rays are all part of the electromagnetic spectrum.

What is the correct order of increasing wavelength?

Shortest longest

A Radio waves Visible light X-ray

B Radio waves X-rays Visible light

C X- rays Radio waves Visible light

D X- rays Visible light Radio waves

43 Diagram shows a circuit.

R =12Ω

V3 9V

R= 6 Ω

What is the reading on the voltmeter V2?

A 3 V B 6V C 9V D 15 V

44 Why is the filament made in the shape of a coil?

A To increase the current and produce more energy

B To increase the length and produce a higher resistance

C To decrease the resistance and produce a higher current

D To decrease the current and produce a higher potential difference

A

C

B

D

Key: Crest

V1

V2

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45 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 the voltmeters.

V1 V2

Current

A1 5Ω 10 Ω A2

Diagram 24

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

Ammeter reading Voltmeter reading

A A1 < A2 V1 < V2

B A1 = A2 V1 = V2

C A1 = A2 V1 < V2

D A1 > A2 V1 = V2

46 The diagram shows free electrons flowing in a conductor. A total of 2.50 x 1019 electrons

pass through the cross-sectional area in 5.0 seconds.[Charge carried by one electron, e

= 1.6 x 10-19 C]

What is the current in the conductor?

A 0.40 A B 2.00 A C 0.64 A D 0.80 A

47 Circuit below shows two identical bulbs and a resistor.

The values of currents at X, Y and Z are measured.

Which set of values could be obtained ?

X Y Z

A 6A 4A 2A

B 4A 4A 4A

C 6A 2A 4A

D 4A 2A 2A

Power source

Y

Z

X

Resistor

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48 Diagram shows a complete circuit. The reading of the ammeter is I and the voltmeter is

V.

How do the values of I and V change when the sliding contact S of the rheostat is slowly

moved from X to Y?

49 In the following circuits, all the resistors and light bulbs are similar. In which circuit is the

light bulb the brightest?

50 Diagram shows a dry cell connected to a voltmeter and a rheostat. The reading of the

voltmeter is 1.0 V. If the slider on the rheostat is now moved a little, the reading on the

voltmeter becomes 1.2 V.

What are the changes made to the circuit when the rheostat slider is moved?

Internal resistance of cell Current in cell Resistance of rheostat

A No changes Increases Decreases

B Increases No changes Decreases

C No changes Decreases Increases

D Decreases Decreases Increases

I V

A Decreases Decreases

B Increases Decreases

C Decreases Increases

D Increases

Increases

I

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51 A light bulb is labelled 240 V, 60 W. What is the quantity of charge that flows through the

bulb when it lights up at normal brightness for 600 s?

A 150 C B 360 C C 840 C D 2400 C

52 Diagram shows an electric circuit.

What is the energy dissipated in the resistor when the switch is on for 1 minute?

A 6 J B 60 J C 216 J D 3 600 J

53 Diagram shows an electric circuit consisting of three resistors and power supply 12 V

What is the power loss due to the resistors in the circuit?

A 1.5 W B 3.0 W C 10.3 W D 12.0 W

54 The diagram shows a circuit that consists of three identical resistors and three

ammeters.

Diagram 20

Which of the following shows the correct reading of ammeter?

A A1 = A2 = A3

B A1 > A2 = A3

C A1 < A3 < A3

D A1 > A3 > A2

55 A label 240V,1500W on electrical kettle means

A 1500 A of current used every 1 second when connected to 240 V supply

B 1500 W of power used every 1 second when connected to 240 V supply

C 1500 V of voltage used every 1 second when connected to 240V supply

D 1500 J of energy used every 1 second when connected to a 240 V supply

10

6 V

A3

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56 Diagram shows a graph of the potential difference, V, across the terminals of a cell

against with the current, I, through the cell.

What is the internal resistance of the cell?

A 0.80 Ω B 1.16 Ω C 1.25 Ω D 1.43 Ω

57 Diagram shows an electromagnet.

What is the polarity at X and Y when the current flows?

X Y

A North North

B North South

C South South

D South North

58 Diagram shows four compasses placed near a solenoid.

Which of the following shows the correct direction of the plotting compasses when the

current flows through the solenoid?

A B

C D

0

1.2

0.4

0.20 0.84

V / V

I / A

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59 Diagram shows the set up of the apparatus to study the pattern of the magnetic field

produced by the current in a straight wire

Which diagram shows the correct pattern and direction of the magnetic field that will be

seen by the observer?

A B C D

60 Diagram shows two coils are wounded on an iron ring. When the switch K is closed,

what will happen to the bulb connected to the secondary coil?

A Lighted up with increasing brightness.

B Flashed at a constant frequency

C Flashed only ones

D Not lighted up

61 Diagram 32 shows an electric dynamo. Which graph describes the variation of the

current displayed on the CRO screen.

Observer

Iron filings Cardboard

Wire

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62 Which of the following can be used to determine the direction of magnetic field

produced by a current-carrying conductor?

A Lenz‟s law B Faraday‟s law

C Fleming‟s Left-hand rule D Right-hand Grip rule

63 Diagram shows a bar magnet is moving towards a solenoid.

What is the magnetic polarity at both ends of the solenoid, X and Y?

X Y

A South South

B South North

C North North

D North South

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64 The following circuit diagrams show four diodes connected to an ac power supply.

Which circuit will make the bulb lights up with maximum brightness?

A

B

C

D

65 Which circuit will not light up the bulb?

A

B

C

D

66 Diagram shows a simple electric circuit.

Which logic gate is equivalent to the circuit above?

A AND gate C NAND gate

B OR gate D NOT gate

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67 Diagram shows an automatic switch circuit to light up a bulb at night.

What changes should be done to light up the LED during day time?

A Interchange R1 and R2

B Reverse the terminal of the battery

C Replace the npn transistor with a pnp transistor

D Replace resistor R3 with a resistor of lower resistance

68 Which of this following can be used as a moderator in a nuclear reactor ?

A concrete slab B boron rod

C graphite core D uranium rod

69 The decay of actinium, Ac22889 to lead Pb208

82 released several α and β particles.

Determine the number of α and β particles

A 5 α + 3 β B 5 α + 2 β

C 3 α + 5 β D 3 α + 2 β

70 Diagram shows a nuclear reaction.

The nuclear reaction is

A nucleus fission B chain reaction

C nucleus fusion D nucleus disintegration

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DIAGNOSTIC TEST (ANSWER and ANALYSIS)

Question Answer or Topic Mark Remarks

1.

Forces and

Motion …… / 6

2.

3.

4.

5.

6.

7.

Force and

Pressure …… / 9

8.

9.

10.

11.

12.

13.

14.

15.

16.

Heat …… / 9

17.

18.

19.

20.

21.

22.

23.

24.

25.

Light …… / 11

26.

27.

28.

29.

30.

31.

32.

33.

34.

35.

36.

Waves …… / 7

37.

38.

39.

40.

41.

42.

43.

Electricity …… / 14

44.

45.

46.

47.

48.

49.

50.

51.

52.

53.

54.

55.

56.

57. Electromagnetism …… / 7

58.

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Question Answer or Topic Mark Remarks

59.

60.

61.

62.

63.

64.

Electronics …… / 4 65.

66.

67.

68.

Radioactivity …… / 3 69.

70.

TOTAL …… / 70

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SECTION B

Question 1

Given the displacement-time graph below,

Draw the corresponding velocity-time and acceleration-time graphs, and then describe the motion of the object.

[4 marks]

Question 2

A 6.0 N weight is attached to a light string which is then tied to the midpoint of a second string of

length 0.8 m. This string is suspended from two fixed points which are on the same horizontal line

0.60 m apart. The arrangement is shown below:

a) What is the angle between the two halves of the string?

b) Draw arrows of all forces involved to represent the situation.

c) What is the tension in each string?

[5 marks]

1. Force & Motion

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Question 3

The inclined plane (ramp) is a simple machine that helps us to get stuff down or up

A person is pushing a wheelbarrow along a ramp that makes an angle 25° with the horizontal.

The wheelbarrow and load have a combined mass of 60 kg. What is the pulling force the person

must apply along the inclined plane so that the wheelbarrow moves with a constant speed on

that ramp? The friction between the ramp and the wheelbarrow is 40 N.

[4 marks]

Question 1

Diagram 1 shows a suction pump being used to lift a mirror that measured 1.5 m X0.5m X

0.01m . The density of the mirror is 2.5 X 10 3 kg m-3 .

The pump obeys atmospheric pressure principle to let the suction pump stick onto surface of

mirror.

Diagram 1

(a) Explain how the suction pump can lift the mirror with the aid of atmospheric pressure.

[4 marks]

(b) Calculate the weight of mirror above.

[2 marks]

Question 2

During the school football match, a penalty kick made by a player is in a curved path. The ball

which is kicked to spin moves in a curved path. Explain why the path taken by the spinning ball is

curved.

[3 marks]

2. Forces and Pressure

rubber

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Question 3

Diagram (a) shows a simple mercury barometer placed at the sea level. Diagram (b) shows the

height of mercury column when barometer is placed on the top of Mount Kinabalu.

Placed at the sea level Placed on the top of Mount Kinabalu

Diagram (a) Diagram (b)

(a) Explain what happen to the mercury column in Diagram (b). Give reason.

[3 marks]

Diagram (c)

(b) If the gas is filled in the vacuum column,explain what will happen to the height of the

vertical column of mercury.

[ 2 marks ]

Question 4

Diagram shows an apparatus used to remove water from a beaker A to beaker B.

vacuum

Mercury column

Filled with gas

Mercury column

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(a) Explain how the water flows from the beaker to the cylinder as shown inthe diagram.

[4 marks]

(b) Explain how do we stopsthe water from flowing to the cylinder.

[1 mark]

Question 5

Siti suspects a necklace diamond owned by her is not genuine. The density of the diamond is

27.3 g cm-3. Siti is told that decoration with diamond content exceeding 75% is assumed as

genuine diamond.

(a) Suggest a method to be taken by Siti to solve her problem.

[5 marks]

(b) If the mass of the necklace is 265 g and the volume is 20 cm3, determine whether the

diamond necklace is genuine or not.

[3 marks]

Question 6

The manager of a hot air balloon carnival wanted to know the best time in a day to launch the

balloons.

The balloon should be able to rise to about the height of a five-stories building.

Give your suggestion and explain why.

[5 marks]

Question 7

(a) Diagram (a) shows the hydraulic system which is used to lift a car in a workshop. Explain

briefly how the car can be lifted up when the force is exerted on Piston A.

[4 marks]

Diagram (a)

Diagram (b)

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(b) Diagram (b) shows a hydraulic system used to raise a load by a distance of X m. A

force of 50 N is applied on piston A of cross –sectional area 2 cm2. Load is placed on piston B of

cross –sectional area 15 cm2.

(i) Calculate the force acting on piston B .

[2 marks]

(ii) Calculate the distance , X ,moved by piston B if the distance moved by piston

A is 21 cm

[2 marks]

Question 8

Diagram (a), Diagram (b) and Diagram (c) show a fisherman pulling a fishing net out of the river.

In Diagram (a), the fisherman finds it is easy to pull up the fishing net while most of his catch is in

the water, due to the buoyant force. However as more and more of the catch is out of the water

it gets harder to pull up the net as shown in Diagram (b) and Diagram (c).

Explain the situation

[5 marks]

Question 9

Diagram (a) and Diagram (b) show a Bunsen burner and its inner structure. Based on Diagram

(b) explain how a blue flame can be produced.

[4 marks]

Diagram (a) Diagram (b)

Digram (a) Diagram (b) Diagram (c)

Diagram (a) Diagram (b) Diagram (c)

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Question 1

Diagram shows the air pressure in the tire of a car being measured by a pressure gauge.

Based on kinetic theory of gasses, explain why the air pressure in the tire increases after the car

has completed a long journey.

[4 marks]

Question 2

The diagram shows a manometer is connected to a gas tank. When the clip is opened the

positions of mercury level at point X and Y are 45 cm and 25 cm respectively. The temperature

of the gas is 127oC.[ Atmospheric pressure = 75 cm of Hg ]

(a) Determine the pressure

(i) of the gas in the gas tank [1 mark]

(b) When the gas is cooled down to T oC,the mercury level , Y increasing and X

decreasing until X and Y at same level.

(i) Based on the kinetic theory of gases explain why the mercury level X decreased

[2 marks]

(ii) Calculate the value of T. [2 marks]

(iii) Name the law involved in b(ii). [1 mark]

Question3

The temperature of 5 kg of water rises by 50 0C when heated. What is the temperature rise when

8 kg of water is heated by the same amount of heat energy?

[3 marks]

Question4

“Water takes a longer time to boil when heated at low lands than at high lands, although the

same amount of energy is used.”This is due to the rate of heat lost is lower at low lands.

Explain the statement

[4 marks]

3. Heat

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Question 5

A copper block with mass of 200 g is placed in boiled water. After the thermal equilibrium

achieved, the block is taken out and put it back in 100 cm 3 water at 28˚ C. [ specific heat

capacity of copper = 379 J kg -1 C-1 , specific heat capacity of water = 4200 J kg -1 C-1 , water

density = 1 g cm -3 ]

i) What is the initial temperature of copper block before we put it in 100 cm 3 water at 28˚

C?

[1 mark]

ii) What is the mass of the 100 cm 3 of water?

[2 marks]

iii) What is the final temperature of the water?

[2 marks]

Question 6

Diagram shows two ice cubes of masses m and 2m, melting at room temperature. The

temperature of the ice cubes were initially at -5 oC.

Sketch the graph shows the correct temperature versus time relationship for the two ice cubes ?

2m

m

Temperature/oC

Time/min

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Question 7

Diagram (a) shows a metal P at 100°C being placed in a beaker of water at 28 o C. After a few

minutes thermal equilibrium state is achieved. The mass of metal P and the water are 0.4 kg and

0.2 kg respectively. Diagram (b) shows a temperature against time graph of the water in the

beaker.

Diagram (a) Diagram (b)

(a) (i) What is the meaning of thermal equilibrium? [1 mark]

(ii) Based on the graph in Diagram 3.2, what is the temperature when the thermal

equilibrium is achieved? [1 mark]

(iii) What is the purpose of wrapping the beaker with cotton layer? [1 mark]

(b (ii) Calculate the specific heat capacity of metal P. (Specific heat capacity of water is

4200 J kg-1 °C -1)

[2 marks]

(ii) State the assumption you made in (b)(i)

[1 mark]

Question 8

(a) A solid substance of mass 0.05 kg is heated using an immersion heater of 240V, 1 kW for

1.0 minute until its temperature is 78oC

(i) What is the meaning of temperature? [1 mark]

(ii) Calculate the specific heat cpacity of the substance if the initial temperature

of the substance is 20oC?[2 marks]

(b) The substance is then put into a beaker filled with water of mass 2.0 kg and

temperature 28oC.

Calculate the final temperature of the substance and water.

(Specific heat capacity of water is 4 200 Jkg-1oC-1)

[2 marks]

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Question 9

Diagram (a) shows a dented ping-pong ball is placed in hot water. Diagram (b)shows the ping-

pong ball reverted to its original spherical shape after a few minutes.

Diagram(a) Diagram (b)

Using the concept of physics, explain how the ping-pong ball reverted to its original

spherical shape.

Question 1

Diagram shows the photograph of reflection of seagull in the water.

By using a ray diagram, explain how the image of the seagull is formed and state the

characteristics of image.

[4 marks]

Question 2

You are given three mirrors of equal size. Explain how will you identify them as convex, concave

and plane mirror.

[4 marks]

4. Light

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Question 3

Diagram shows a rear-view mirror in an automobile.

http://www.garylellis.org/tag/rear-view-mirror/

Explain why a convex mirror is used as a rear-view mirror in the automobile. Suggest how the

brightness and glare of lights on the mirror caused by headlights of vehicles behind can be

reduced.

[4 marks]

Question 4

The light beam in the diagram below strikes surface 2 at the critical angle, x = 42°.

Determine the angle of incidence, y

[4 marks]

Question 5

When you are driving on a hot day, an inferior mirage may appear to be a pool of water on the

road in the distance, when really all it is, is an illusion.

Diagram 5.1 shows the inferior mirage.

Diagram 5.1

By using a ray diagram, explain how the inferior mirage is formed.

Object

Image

road

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[4 marks]

Question 6

Shown below is a situation where a coin is placed in the bottom of a foam cup. Situation A is

before and situation B is after water is poured into the cup. In which situation is the coin more

visible to the observer? By using physics concept, explain the situation.

[4 marks]

http://www.physicslessons.com/qphysicsb.htm

Question 7

Diagram shows a coin is placed under a pyrex beaker.

http://www.dorjegurung.com

Why does the coin disappear from view when water is poured into the beaker? Explain your

answer by using ray diagrams.

Question 8

A scuba diver training in a pool looks at his instructor as shown in the diagram below. By using a

ray diagram explain the position of the instructor to the scuba diver view.

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Question 9

Diagram 10.1 shows a light ray directed perpendicularly at a side of the semi circular glass block.

The ray passes through the glass block to a point O before leaving the glass block. The angle of

incidence in the glass block is 30°.

Diagram 10.1

Explain how total internal reflection occurs in Diagram 10.1 above?

[4 marks]

Question 10

Explain how you would estimate the focal length of a convex lens in your school laboratory .

Question 11

Diagram 8 shows an object, O with height 2 cm placed on the left side of a convex lens, X. The

focal length of the convex lens is 10 cm.

(a) In Diagram 8 draw the ray path from the object to form an image.

Convex lens X

Object

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[2 marks]

(b) State the characteristics of the image formed.

[1 mark]

(c) If the object is placed at a distance 30 cm from the lens, calculate:

(i) the image distance.

(ii) Linear magnification.

[3 marks]

Question 12

Nadia is farsighted with a near point of 100 cm. By using a ray diagram, explain how reading

glasses is needed for Nadia to read a book at a distance of 25 cm? What is the power of the

lens? Assume the lens is very close to the eye.

[4 marks]

Question 13

You are given two convex lenses X and Y. The focal length of convex lens X and Y is 2.81 cm and

3.35 mm respectively. You are required to create a simple microscope using convex lenses X and

Y.

Draw the arrangement of the lenses and sketch the ray path using convex lenses X and Y to form

a simple microscope in normal adjustment.

[4 marks]

Question 1

wooden bar P vibrates on a water surface of a ripple tank at a frequency of 5 Hz. The distance

between three consecutive crests is 8.0 cm. The water wave produced is shown in the diagram

below.

Determine the speed of waves

Question 2

Diagram shows that the glass breaks when a soprano singer sings.

5. Waves

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Using the physics concept in (b), explain why it happens.

[4 marks]

Question 3

Diagram shows a climber starts a stopwatch as he shouts. He hears an echo from the opposite

side of the valley after 1.0s.

The sound travels at 340 ms-1. What is the width of the valley. ?

Question 4

Sound is produced by a vibrating object in a medium and propagates as a longitudinal wave in

the medium.

(i) Explain how a tuning fork produces sound waves in air. [2 marks]

(ii) Describe how you would show that sound waves are longitudinal waves. [2 marks]

Question 4

Diagram shows a water waves travelling from deep area to a shallow area.

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(a) What type of wave is the water waves? [1 mark]

(b) Complete Diagram 2.1 to show the direction of propagation of the water waves in

deep area and shallow area. Draw the waves‟ patterns in both areas.

[2 marks]

(c) Calculate the wavelength at deep area if the speed of water waves at shallow area

and deep area are 4.0 ms-1 and 9.0 ms-1, respectively. The wavelength at shallow area is

2 m.

[2 marks]

Question 1

Diagram shows an electrical circuit. The reading of voltmeter V1 is 2 V.[Ignore the internal

resistance of the cell]

(i) State the reading of voltmeter V2.

(ii) Calculate the current in the circuit.

(iii) What is the resistance of the nichrome wire? [5 marks]

6. Electricity

5

Nichrome wire

V1

V2

6 V

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Question 2

Diagram (a) shows the structure of a hair dryer with two speed control switches. Diagram (b)

shows the circuit diagram in which its components are connected in a combination of series

and parallel circuits.

Diagram (a)

(a). What is effective resistance ? [1 mark]

(b). Explain the advantages of parallel circuits in our household electrical appliances.

[4 marks]

(c) (i). Based on Diagram 12.2, what is the purpose of connecting the resistor, R in

series with the fan ?

[1 mark]

(ii). Based on Diagram 12.3, what are the readings of effective resistance when

only switch A is closed and when both of switches are closed ?

[4 marks]

Diagram (b)

RF = 20 R = 10

Switch B

RHE = 20 Switch

A

Heating elemen

Fan

Switch B

Switch A

Main switch

To power supply

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Diagram 12.3

Question 3

Diagram shows a burning candle is placed in an electric field between two metal plates.

(a) On Diagram below draw the shape of the candle flame observed in the electric field.

(b) Explain why the shape of the candle flame observed as drawn in answer (a).

[2 marks]

Question 1

Diagram shows a simple loudspeaker

(a) What is a Loudspeaker?

(b) Explain how does a loudspeaker produce sound

Question 2

Explain what happens to the copper wire when the dc power supply is switched on.

7. Electromagnet

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Question 3

Diagram shows a simple dynamic microphone

(c) What is a microphone?

(d) Explain how does the dynamic microphone uses a wire coil and magnet to create the audio

signal.

Question 4

Diagram (a) and Diagram (b) show a bar magnet is pushed into a solenoid at a speed of 2 ms-1.

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Diagram (a) Diagram (b)

(a) Explain why the pointer of the galvanometer deflected when the magnet is pushed into

the solenoid

[4 marks]

(b) Explain why the deflection of the galvanometer is bigger in Diagram (b)

[4 marks]

(c) What will happen if the speed is increased to 3 ms-1. Explain your answer

[4marks]

(d) Why the direction of the current is upward as shown in the diagram? Explain

Question 5

Diagram shows a direct current generator

Explain how the above generator works to produce direct current. [4 marks]

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Question 1

Diagram (a) shows a circuit with transistor which is used as an amplifier.

Diagram (a)

(a) Explain how is the audio from the microphone can be amplified?

[4 mark]

(b) What is the maximum value for resistor R1 for the transistor to function?

(V YZ is 1 V )

[3 marks]

Question 2

Given :

(a) Diagram (a) shows the combination of two logic gates S.

8. Electronic

microphone

capacitor

speaker

6 V

R2=1000

Y

Z

X

R1

Ω

P

A

B

X Q

A

B

X

R

A

B

X S

A

B

X

S S

(i) (ii)

(iii) (iv)

K L

M

Diagram (a)

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Combination of two logic gates above will produce single logic gate M. Complete the truth

table in Table (a) for the combination of logic gates in diagram (a). Name the logic gate M

[2marks]

K L M

0 0

0 1

1 0

1 1

. [1 mark]

(b) Draw the combination of two logic gates Q to produce a logic gate OR.

[ 1 mark ]

(c) Arrange the logic gates P, Q and R inside the box provided in diagram (b) so that

the output produced is the same as the output in the truth table in Table (b).

[3marks]

Question 3

Diagram (a) shows a wave is formed on a Cathode-Ray Oscilloscope (CRO).

Explain how the CRO can be used to measure the potential difference of a dry cell.

[ 4 marks ]

Question 4

Input Output

A B X

0 0 1

0 1 0

1 0 0

1 1 1 P X

Q

A

B

R Table (b)

Table (a)

Diagram (b)

Diagram (a)

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Diagram (a) shows a fire alarm circuit using a transistor as a switching divice.

Resistor T is a thermistor. When detected heat, resistance at T become 3.5 kΩ. The transistor will

be functional if the potential difference between Y and Z exceed 3.2 V.

S is a fixed resistor with resistance of 6 kΩ.

Explain the operational of the circuit and verify whether the bell rings or not when there is a fire

burning.

[4 marks]

Question 5

Transistors is an important device in electronics. Transistors can be use as a current controller or

automatic switching. An engineer wants to invent an automatic switching circuit to control

an air conditioner. This air conditioner will switch on during hot wheather and switch off during

cold wheather.

(a) Draw the circuit diagram .

[2 marks]

(b) Explain the operation of the circuit and how the circuit works during the hot weather

[4 marks]

(c) Explain how the circuit works during cold weather

[4marks]

Question 6

Diagram shows an electrical circuit to detect temperature of water whilst boiling an egg. When

the egg is ready to serve, the siren will go off and the base voltage, Vb is at least 1.5 V.

DIAGRAM 10

Bell

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Diagram (a)

If the siren is functional

(a) what is the maximum potential difference across R1?

[1 mark]

(b) Calculate the resistance of the thermistor . Given the value of R1 is 600 .

[2 marks]

(c) Calculate the collector current, IC, if the emitter current, IE is 100 mA.

[2 marks]

Question 1

Diagram (a)

Diagram (a) shows an underground water pipe which has a leak.

Leaks in underground water pipes can be detected using radioactive sources.

Explain how a technician can trace the leakage point based and the characteristics of the ray

chose.

[5 marks]

Question 2

Carbon-14 is a radioisotope. Explain how Carbon-14 can be used to estimate the age of a dead

plant, which contain carbon.

9. Radioactivity

Location of leakage Water pipe

1 m

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[5 marks]

Question 3

In a nuclear reactor, 3.5 x 10 -6 g of Uranium is change into energy in 1.5 ms. Given that the

velocity of light, c = 3 x 108 ms -1.

Calculate

(a) the total energy released.

[2 marks]

(b) the power generated by this reaction.

[2 marks]

Question 4

The following equation shows a fission reaction of Uranium-235.

(a) Nuclear fission produces a chain reaction.

Describe how the chain reaction occurs in a nuclear fission of an atom of Uranium- 235.

[4 marks]

(b) The nuclear energy produced in the fission reaction of uranium-235 is 2.9 x 10-11 J.

Calculate the total lost of mass in the reaction.

[ c = 3.0 x 108 ms-1]

[2 marks]

Question 5

Diagram(a) is part of the decay curve for a sample of an α-emitting radioactive isotope.

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Based on Diagram (a)

(a) Determine the half-life of the isotope.

[2 marks]

(b) Complete the curve in Diagram (a) as far as time = 20 days. Plot the exact corresponding

values of

the percentage activity and time.

[3 marks]

Question 6

Radioactive source emitting ray is usedto detect the thickness of aluminium plate in a factory

With the aid of a diagram, explain how the thickness of the aluminium plate can bedetected.

.[4 marks]

SECTION C

Diagram (a)

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Basic Mathematics / Science Skill

1. Prefix and Physical Unit

(a) Write the following physical quantities in the unit given.

(i) 1 m2

= ………………………. cm2

(ii) 5 m

3 = ………………………. cm

3

(iii) 8 cm

2 = ………………………. m

2

(iv) Speed of the car = 120 km j

–1 = ……….… m s

–1

(b) An object moves along straight line for time t. The length of the line, s is given by

the equation

2

2

1gts .

What is the SI unit for g?

2. Understanding Measurements – Sensitivity, Precision and Accuracy

(a)

Measuring

instrument

Smallest

scale division Accuracy Measurement

metre rule

…………………

venier callipers

…………………..

micrometer screw

gauge

……………….

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Time, t (s)

Velocity (v)

Time, t (s)

Velocity (v)

Time,t (s)

Velocity (v)

Time,t (s)

Velocity (v)

(b) In a shooting competition, three participants A, B and C each take six shots at a target..

A C B

Compare the precision and the accuracy of three shooters

From the diagram,

i) Whose shots are more consistence (precise)? ………………………..

ii) Whose shots are more accurate? .……………………….

(c) The consistency of measurement:

Example:

Reading P 24 g 24 g 25 g

Reading Q 24 g 26 g 27 g

Reading P has higher / less * consistency than Reading Q

(d) The accuracy of measurement:

Example:

The acceleration due to gravity = 9.81 m s-2

The experimental value: R - 9.76 m s-2

S - 9.62 m s-2

Reading R is …………………..accurate than Reading S.

3. Graph

a. The relationship between two physical quantities

(i) (ii)

(ii) (iv)

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b. The graph shows the relationship between v and t.

What is the equation represents the relationship between v and t ?

c. Determine the gradient of the graph

(i) OP (ii) PQ

END OF PERFECT SCORE MODULE

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