Paper 1 May 2000 Physics

UNIVERSITY OF CAMBRIDGE LOCAL EXAMINATIONS SYNDICATE General Certificate of Education Ordinary Level

PHYSICS

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PAPER 1 Multiple Choice MAY/JUNE SESSION 2000

1 hour

Additional materials: Multiple Choice answer sheet Soft clean eraser Soft pencil (type B or HB is recommended)

TIME

1 hour

INSTRUCTIONS TO CANDIDATES Do not open this booklet until you are told to do so. Write your name, Centre number and candidate number on the answer sheet in the spaces provided unless this has already been done for you. There are forty questions in this paper. Answer all questions. For each question, there are four possible answers, A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate answer sheet. Read very carefully the instructions on the answer sheet. INFORMATION FOR CANDIDATES Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet.

This question paper consists of 15 printed pages and 1 blank page. SB (SC / JB) QF06362/2 © UCLES 2000

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2 1

The diagram shows a vernier scale.

3

4

cm

0

0.1

Which reading is shown? A

2

3.44 cm

B

3.46 cm

C

3.60 cm

D

4.00 cm

A ball falls freely (with no air resistance) near the surface of the Earth. Which quantity remains constant?

3

A

acceleration

B

distance travelled in 1 s

C

speed

D

velocity

Oil drips at a constant rate from a moving car. The diagram shows the pattern of the drips on a road.

direction of movement Which statement describes the motion of the car? A

It accelerated and then moved at a steady speed.

B

It accelerated and then slowed down.

C

It moved at a steady speed and then slowed down.

D

It moved at a steady speed and then accelerated.

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3 4

A heavy lorry has a high inertia. How difficult is it to start the lorry moving and to stop it moving?

5

to start

to stop

A

difficult

difficult

B

difficult

easy

C

easy

difficult

D

easy

easy

A rectangular block of wood has length 6.0 cm, width 5.0 cm and height 10.0 cm. It has mass 150 g. What is the mass of a block of the same type of wood of length 3.0 cm, width 5.0 cm and height 20.0 cm? A

6

75 g

B

150 g

C

300 g

D

600 g

An airship is moving forwards at constant height. upward force (lift)

downward force Which statement is correct? A

Gravity no longer has any effect.

B

The airship now has zero mass.

C

The potential energy is zero.

D

The upward and downward forces are balanced.

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4 7

A pivoted uniform bar is in equilibrium under the action of the forces shown.

F

10 N

4m

2m

6N

2m

What is the magnitude of the force F ? A

8

2N

B

4N

C

8N

D

14 N

A car accelerates up a hill. What happens to its kinetic energy and to its potential energy?

9

kinetic energy

potential energy

A

decreases

increases

B

increases

decreases

C

increases

increases

D

unchanged

decreases

The diagram shows a simple mercury barometer.

height of mercury column

mercury

reservoir

Which of the following does not cause the height of the mercury column to vary? A

changes in the atmospheric pressure

B

changes in the value of g

C

evaporation of mercury from the barometer reservoir

D

leakage of air into the tube

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5 10 The results table is produced by a student studying the ‘work done’ in moving an object. force used

distance moved

‘work done’

110

10

1100

Units are missing from each column. What should they be? force

distance

work done

A

F

D

W

B

kg

m

kg/m

C

m

kg

N

D

N

m

J

11 Which of the following correctly states the properties of solids, liquids and gases? solids

liquids

gases

A

do not flow easily

flow easily

flow easily

B

easily compressed

easily compressed

hard to compress

C

fixed shape

fixed shape

no fixed shape

D

no fixed volume

fixed volume

no fixed volume

12 A swimmer comes out of the water on a windy day. He may feel colder before he dries himself than afterwards. Why is this? A

The water is cooled down by the swimmer.

B

The water on his skin is colder than the air.

C

The water prevents warm air reaching his skin.

D

The wind evaporates the water, cooling his skin.

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6 13 A partially inflated balloon is placed under a bell jar (diagram 1). diagram 1

diagram 2

balloon

airtight seal metal table to vacuum pump

to vacuum pump

A vacuum pump is turned on for several minutes and the volume of the balloon increases (diagram 2). Which pressure changes occur within the bell jar and within the balloon?

pressure change in the bell jar

pressure change in the balloon

A

decrease

decrease

B

decrease

increase

C

increase

decrease

D

increase

increase

14 What is reduced when a mercury thermometer is made using a larger bulb, but with a capillary tube of the same diameter and length? A

accuracy

B

linearity

C

range

D

sensitivity

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7 15 The diagram shows a bimetallic strip in a circuit. The copper expands more than the invar for the same temperature rise. signal lamp

invar

electric bell

copper motor

M

What will be switched on when the bimetallic strip becomes hot? A

bell only

B

lamp and bell only

C

motor and bell only

D

lamp, bell and motor

16 An experiment is carried out as shown.

steam

boiling water glass test-tube metal gauze ice Bunsen burner Why does the ice take a long time to melt, even though the water at the top of the test-tube is boiling? A

Convection cannot occur in water.

B

Ice is a poor radiator of heat.

C

The metal gauze prevents energy reaching the ice.

D

Water is a poor conductor of heat.

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8 17 A lightly coiled spring is fixed at one end and held by hand at the other. fixed

up

left

right

down Which hand movements cause first a compression and then a rarefaction to travel along the spring? A

down then up

B

up then down

C

left then right

D

right then left

18 The diagram shows a converging lens producing an upright, virtual image.

image

F

object

F

lens Which optical instrument uses this arrangement? A

a camera

B

a magnifying glass

C

a photographic enlarger

D

a projector

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9 19 A ray of light passes through a rectangular glass block. It is refracted and totally internally reflected. Which diagram shows a possible path of this ray?

glass

glass

A

B

glass

glass

C

D

20 A person stands 2.0 m in front of a plane mirror as shown.

2.0 m mirror 1.5 m

How far from the person is her image? A

2.0 m

B

3.0 m

C

3.5 m

D

4.0 m

21 On what does the quality (timbre) of a sound wave depend? A

the loudness of the sound

B

the pitch of the sound

C

the shape of the wave

D

the speed of the wave

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10 22 Four different whistles, when blown, emit pure notes with the frequencies shown. 0.1 kHz

1 kHz

10 kHz

100 kHz

How many of the frequencies are above the normal audible range for humans? A

1

B

2

C

3

D

4

23 An iron bar is placed near a magnet as shown.

N

S magnet iron bar

Which diagram correctly shows the induced magnetisation of the iron bar? A

B

N

S

S

C

D

N S

S N

N

24 A small compass is placed beside the middle of a bar magnet.

compass

S

N

In which direction will the compass needle point? A

B

C

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D

11 25 Materials can be classed, in electrical terms, as either conductors or insulators. Which two materials are correctly identified?

conductor

insulator

A

aluminium

copper

B

copper

polythene

C

glass

aluminium

D

polythene

glass

26 A 0.4 m length of resistance wire with an area of cross-section of 0.2 mm2 has a resistance of 2 Ω. Which wire of the same material will also have a resistance of 2 Ω? wire

length

area

A

0.2 m

0.2 mm2

B

0.2 m

0.4 mm2

C

0.8 m

0.1 mm2

D

0.8 m

0.4 mm2

27 The diagram shows two resistors connected in parallel across a voltage source.

X

Y Which statement is true for this circuit? A

The combined resistance is equal to the sum of the resistances.

B

The current at every point in the circuit is the same.

C

The current from the source is equal to the sum of the currents in X and in Y.

D

The sum of the p.d’s across X and across Y is equal to the p.d. across the voltage source.

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12 28 The diagram shows part of an electric circuit.

2Ω

8Ω

X

Y

5Ω

5Ω

What is the effective resistance between X and Y? A

1 __ Ω 20

1 __ Ω 5

B

C

5Ω

D

20 Ω

29 Which diagram shows a lamp and a switch correctly wired to the mains supply? A

B

live

live

neutral

neutral C

D

live

live

neutral

neutral

30 Which fuse should be used for a 750 W electric iron connected to a 240 V supply? A

3A

B

5A

C

10 A

D

13 A

31 For a step-down transformer, what are the relative numbers of turns on the two coils and the material of the core? primary turns

secondary turns

core material

A

few

many

hard steel

B

few

many

soft iron

C

many

few

hard steel

D

many

few

soft iron

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13 32 The diagram shows a current-carrying wire passing through the centre of a sheet of paper.

X

Y

Z

How do the strengths of the magnetic field at points X, Y and Z compare? A

equal at X, Y and Z

B

equal at X and Z, but stronger at Y

C

equal at X and Z, but weaker at Y

D

stronger at X than Y and stronger at Y than Z

33 A 12 V lamp is connected to a 12 V supply using very long leads.

12 V supply

long lead

12 V lamp

long lead Why does the lamp glow only dimly? A

A d.c. supply is being used rather than an a.c. supply.

B

Electrical energy is converted to heat in the long leads.

C

The current through the lamp is less than that from the supply.

D

The potential difference across each lead is half the voltage supply.

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14 34 The diagram shows a horizontal beam of electrons entering a region between two charged plates. +

+

+

+

+

+

+

–

–

–

–

–

–

–

electric field line

electron beam

In which direction is the electron beam deflected? A

upwards

B

downwards

C

into the diagram

D

out of the diagram

35 A radioactive nucleus is represented by 227 85 X. It emits an alpha particle and forms a different nucleus of element Y. Which of the following represents the new nucleus? A

223 83 Y

B

223 84 Y

C

223 86 Y

D

223 85 Y

36 A factory uses a radioactive source and a detector to monitor the thickness of plastic sheets. The arrangement is as shown. too too correct thick thin

meter detector

radioactive source

plastic sheet

Which type of radioactive source would be best for this device?

radiation

half-life

A




1 day

B




10 years

C



1 day

D



100 years

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15 37 Isotopes of an element contain the same number of A

atoms.

B

neutrons.

C

nucleons.

D

protons.

38 In the Geiger-Marsden experiment, why do the great majority of the
-particles pass through the metal foil with only small deviations? A

Atomic nuclei may contain neutrons.

B

Atoms are electrically neutral.

C

Atoms are largely empty space.

D

Atoms have positively charged nuclei.

39 The diagram represents two helium nuclei. They have the same speed, mass and charge. They are moving directly towards each other. helium nucleus

helium nucleus

Which statement is correct? A

The nuclei attract one another with a net gain in their energy.

B

The nuclei repel one another with a net loss in their energy.

C

The nuclei attract one another and their total energy stays constant.

D

The nuclei repel one another and their total energy stays constant.

40 The amount of energy transferred when 10 C of charge passes through a p.d. of 20 V is the same as the energy needed to raise a 2 kg mass through a distance x. [gravitational field strength = 10 N/kg] What is the value of x? A

0.1 m

B

1m

C

10 m

D

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100 m

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