ZIMSEC O-Level Physics Paper 1 November 2022 Question Paper

ZIMBABWE SCHOOL EXAMINATIONS COUNCIL <br> General Certificate of Education Ordinary Level

**PHYSICS** **4023/1** **PAPER 1 Multiple Choice** **NOVEMBER 2022 SESSION** **1 hour**

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

**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 14 printed pages and 2 blank pages. Copyright: Zimbabwe School Examinations Council, N2022.

Question 1

Which one is a unit of pressure?

A Nm

B N/m

C \(\mathrm{N} / \mathrm{m}^{2}\)

D \(\mathrm{N} / \mathrm{m}^{3}\)

Question 2

Which instrument is used to measure the diameter of a thin wire accurately?

A metre rule

B vernier calipers

C micrometer screw gauge

D tap measure

Question 3

Which one is a scalar quantity?

A velocity

B acceleration

C speed

D force

Question 4

Which is an effect of a tensional force?

A bending

B buckling

C shearing

D snapping

Question 5

Which one is correct for a body in motion?

A Its speed is the rate of change of distance.

B The gradient of its displacement-time graph at any point gives the average velocity.

C It must have an acceleration greater than zero.

D When velocity increases with time, its acceleration also increases with time.

Question 6

Which row shows the correct difference between mass and weight?

Question 7

What name is given to the turning effect of a force?

A pivot

B pressure

C moment

D resultant

Question 8

A larger centripetal force is produced when the

A mass of a car is reduced.

B speed of a car is reduced.

C radius of the circle is reduced.

D momentum of the car is reduced.

Question 9

Which quantity is conserved when a stone is dropped from a height, \(L\) to the ground?

A energy

B force

C velocity

D acceleration

Question 10

The diagram shows an extension load graph of a wire. Which point A, B, C or D shows the limit of proportionality for an elastic wire?

Question 11

The efficiency of a machine is improved by

A increasing the mass of the moving parts.

B decreasing the mass of the moving parts.

C increasing the roughness of the moving parts.

D increasing the height of the moving parts.

Question 12

Metal cannot be joined to plastic by

A nailing.

B screwing.

C bolting.

D brazing.

Question 13

A mass of 8 kg is moving at constant speed. The kinetic energy of the mass is 400 J.

What is the speed of the mass?

A \(0.02 \mathrm{~m} / \mathrm{s}\)

B \(10.00 \mathrm{~m} / \mathrm{s}\)

C \(50.00 \mathrm{~m} / \mathrm{s}\)

D \(100.00 \mathrm{~m} / \mathrm{s}\)

Question 14

Potential energy is the energy that a body has due to its

A motion.

B position or physical condition.

C height above sea level.

D temperature difference.

Question 15

Which expression gives the power?

A energy \(x\) time

B force \(x\) velocity

C \(\frac{\text { force }}{\text { velocity }}\)

D \(\frac{\text { time }}{\text { energy }}\)

Question 16

A cylinder contains \(0.42 \mathrm{~m}^{3}\) of nitrogen at a pressure of 260 KPa. What is the new volume of nitrogen at 110 KPa at constant temperature?

A \(0.18 \mathrm{~m}^{3}\)

B \(0.24 \mathrm{~m}^{3}\)

C \(0.42 \mathrm{~m}^{3}\)

D \(0.99 \mathrm{~m}^{3}\)

Question 17

Water is used as a coolant in car engines because it has a

A high specific heat capacity.

B high specific latent heat.

C low specific heat capacity.

D low specific latent heat.

Question 18

What is the frequency for a red light of wavelength \(7 \times 10^{-7} \mathrm{~m}\)?

A \(1.4 \times 10^{6} \mathrm{~Hz}\)

B \(4.3 \times 10^{14} \mathrm{~Hz}\)

C \(2.3 \times 10^{-15} \mathrm{~Hz}\)

D \(2.1 \times 10^{2} \mathrm{~Hz}\)

Question 19

For reflection and refraction, a wave changes

A direction.

B speed.

C frequency.

D wavelength.

Question 20

When a magnifying glass is moved away from an object, the image

A becomes inverted.

B becomes diminished.

C moves closer to the lens.

D moves further from the lens.

Question 21

A boy fires a pistol in front of a tall building. He hears two shots 6 seconds apart.

What is the distance of the boy from the building, if the speed of sound in air is \(300 \mathrm{~m} / \mathrm{s}\)?

A 50 m

B \(100 \mathrm{~m}\)

C 900 m

D 1800 m

Question 22

The table shows part of the electromagnetic spectrum.

| \(\mathbf{P}\) | Ultraviolet | \(\mathbf{Q}\) | Infrared | | :--- | :--- | :--- | :--- |

Which combination identifies \(\mathbf{P}\) and \(\mathbf{Q}\)?

Question 23

In an electric field of an isolated negative charge, the

A number of field lines depend on the size of the charge.

B field lines cross each other.

C field lines point away from the charge.

D electric force is in the opposite direction to field lines.

Question 24

An uncharged gold leaf electroscope can be used for the following except to show

A that an object is charged.

B that charge can be induced.

C that like charges repel.

D the nature of the charge.

Question 25

The diagram shows identical lamps X and Y connected to battery.

Which statement is not true about the lamps?

A They shine with equal brightness when lit.

B They can be operated from different switches.

C They can be operated independently from the same switch.

D They consume the same amount of electrical energy.

Question 26

The earth wire on an electric heater should be connected to the

A heating element.

B metal case.

C on/off switch.

D plastic handle.

Question 27

A battery is used to light a 20 W electric lamp. The battery provides a charge of 120 C in 1 hour.

What is the potential difference across the lamp?

A 6 V

B 10 V

C 20 V

D 40 V

Question 28

Resistance of a conductor is independent of

A density.

B temperature.

C length.

D thickness.

Question 29

A metal bar is a permanent magnet if it

A attracts another magnet.