O Levels Physics Mcq Simulation

This is a simulation for your MCQ physics paper.

The Actual paper is 40 questions and 1 hour long.

You will only have 50 minutes for this simulation. 40 minutes to do and 10 minutes to check your work.

Times up!

O level Pure physics

1 / 40

A piece of metal is heated, and its mass and volume are measured to determine how its density changes with temperature.

Which of the following graphs shows the relationship between the density of the substance and temperature?

1. C

2. A

3. B

4. D

2 / 40

A box of mass 2.0 kg is pushed along a 12 m ramp with a force F of 15.0 N and accelerates from point P to point Q. The speed of the box is 2.0 m / s at P and the average frictional force acting on the box is 4.0 N throughout the motion. The gravitational field strength is 10 N / kg.

What is the speed of the box at point Q?

1. 6.0 m / s

2. 8.0 m / s

3. 5.7 m / s

4. 16 m / s

3 / 40

The diagram represents the surface of a transparent liquid. Two rays of light are travelling within the liquid. They both reach the surface. The path of each ray is shown.

What is the refractive index of this liquid?

1. 1.3

2. 1.2

3. 1.6

4. 1.7

4 / 40

A beam of electrons moves in a straight path through a magnetic field with an initial velocity, v. The electrons are deflected as shown.

What is the direction of the magnetic field?

1. out of the paper

2. to the left

3. to the right

4. into the paper

5 / 40

A small coil is connected to a galvanometer as shown below.

When the magnet is allowed to move towards the coil, which of the following statements
shows the current flow?

1. continuously from Y to X

2. momentarily from Y to X

3. continuously from X to Y

4. momentarily from X to Y

6 / 40

A student pushes the N-pole of a bar magnet into end Q of a long solenoid. An electromotive force and hence an induced current is induced in the solenoid and the galvanometer needle deflects to the left as shown.

Which of the following produces a deflection in the same direction?

1. pulling the S-pole out of end P

2. pushing the N-pole into end P

3. pulling the N-pole out of end Q

4. pushing the S-pole into end P

7 / 40

The diagram shows a manometer containing mercury that is sealed at one end.

What happens to the height h when the manometer is taken to the top of a mountain?

1. It decreases, because atmospheric pressure decreases.

2. It increases, because atmospheric pressure increases.

3. It decreases, because atmospheric pressure increases.

4. It increases, because atmospheric pressure decreases.

8 / 40

The diagram shows two insulated wires, P and Q, each with the same amount of current flow.

Which region A, B, C or D has the strongest magnetic field out of the paper?

1. B

2. C

3. D

4. A

9 / 40

An electron is placed at the point N in the electric field as shown below where point N is the centre of two identical positive charges.

What is the motion of the electron?

1. moves downwards

2. does not move

3. moves upwards

4. moves out of the plane of paper

10 / 40

A 3-pin plug is connected to a heater with a rating of ‘200V, 1200 W’.

Which of the following is/are correct?

1 . A 5A fuse should be used inside the heater.

2 . The fuse should be placed on the brown wire of the cable.

3 . The neutral wire should be connected to the metal case of the heater.

1. 3 only

2. 1 and 2 only

3. 2 only

4. 2 and 3 only

11 / 40

1. D

2. B

3. A

4. C

12 / 40

Which of the following correctly describes an action-reaction pair of forces?

1. The pulling force acting on a trolley and the frictional force acting on the trolley.

2. The reaction force on a book resting on a table and the weight of the book.

3. The backward force acting on water by propeller and the resistive force acting on the boat.

4. A runner pushes backward on the ground and the ground pushes forwards on runner.

13 / 40

A current of 4.5 A flows through the electrical components of a refrigerator when connected to a source of 240 V. It costs $0.35 for 1 kW h of electrical energy.

How much will it cost to keep the refrigerator running for 1 week?

1. $0.05

2. $378

3. $63.50

4. $2.25

14 / 40

A computer engineer wants the speed of a fan to increase when the temperature inside a computer increases. The engineer knows that a larger current causes the fan to turn more quickly.

Which component should be placed at X to make this happen?

1. a variable resistor

2. a relay

3. a thermistor

4. a transformer

15 / 40

A consultant for a cookware manufacturer wishes to make a pan that will have two features:

(i) absorb energy from a flame as quickly as possible, and

(ii) has a cooking surface that stays as hot as possible when heated.

Which pan would be recommended?

1. outer surface black and inner surface shiny

2. outer and inner surface shiny

3. outer surface shiny and inner surface black

4. outer and inner surface black

16 / 40

Smoke detectors may make use of radioactive emissions to function. Which of the following best explains why alpha-particles are used in smoke detectors?

1. A

2. B

3. C

4. D

17 / 40

A horizontal beam of electrons passes between the two poles of a magnet.

In which direction is the beam deflected?

1. into the page

2. out of the page

3. towards the south pole

4. towards the north pole

18 / 40

Block A and block B are connected by a light inextensible string. A force of 12 N acts on block A as shown.

Given that the floor is smooth, what is the tension in the string connecting block A and block B?

1. 2.0 N

2. 8.0 N

3. 12 N

4. 4.0 N

19 / 40

The diagram shows a water wave in a ripple tank.

The wave has a speed of 0.15 m / s at R.

The wave crosses a boundary PQ where the distance between troughs changes from 3.0 cm to 1.5 cm.

What is the velocity of the wave at point S

1. 0.30 m / s

2. 0.45 m / s

3. 0.15 m / s

4. 0.075 m / s

20 / 40

A gas is heated in a rigid sealed container. Which quantity does not change?

1. The frequency of collisions on the walls of the container by the gas particles.

2. The average speed of the gas particles.

3. The average distance between the gas particles.

4. The average force exerted on the walls of the container by the gas particles.

21 / 40

The ends of three metal rods are tested by holding end Q of rod 1 close to each end of rods 2 and 3.

The results are as follows:

End Q attracts end R.

End Q attracts end S.

End Q attracts end T.

End Q repels end U.

Which of the metal rods is a magnet?

1. rod 2 and rod 3 only

2. rod 2 only

3. rod 1 and rod 3 only

4. rod 1 only

22 / 40

In nuclear ……1……, hydrogen nuclei ……2…… to form helium nuclei, releasing energy.

Which words correctly complete blanks 1 and 2?

1. B

2. C

3. D

4. A

23 / 40

A water wave travels from deep water to shallow water in a ripple tank as shown in the diagram.

Waves in the deep water have a wavelength of 3.6 cm and a speed of 18 cm /s.

The speed of the waves in shallow water is 15 cm / s. What is the wavelength of the waves in the shallow water?

1. 5.0 cm

2. 3.6 cm

3. 3.0 cm

4. 4.3 cm

24 / 40

A thin converging lens has a focal length of 5.0 cm. An object is placed on the principal axis, 2.0 cm away from the lens.

What type of image is formed by the lens?

1. virtual and inverted

2. real and upright

3. virtual and upright

4. real and inverted

25 / 40

A pulse of sound is transmitted vertically downward from the bottom of a stationery ship, and the time taken for its echo to be detected back at the ship is recorded. The ship repeats this process at another location. The new time recorded is 1.5 times as long as the time taken at the first location.

Which of the following is correct?

1. The depth at the new location is 0.75 times as deep as the original location.

2. The speed of sound at the original location is 0.75 times as fast as at the new location.

3. The depth at the new location is 1.5 times as deep as the original location.

4. The speed of sound at the original location is 1.5 times as fast as at the new location.

26 / 40

Which statement about electromagnetic waves in a vacuum is correct?

1. Infrared waves have shorter wavelengths than visible light waves.

2. Ultraviolet waves have higher frequencies than visible light waves.

3. gamma-rays have lower frequencies than X-rays.

4. Microwaves have longer wavelengths than radio waves.

27 / 40

A solar panel is used to recharge a battery. The solar panel produces 0.80 W of electrical
power. The panel is 20% efficient.

What is the power input of the sunlight onto the solar panel?

1. 4 W

2. 8 W

3. 0.16 W

4. 16 W

28 / 40

A crate of oranges is pulled across a rough surface by a force, causing the crate to accelerate
at 1.5 m/s2. The combined mass of the crate and oranges is 24 kg.

1. D

2. B

3. A

4. C

29 / 40

Which statement about electromagnetic waves is correct?

1. Infrared rays are used in sunbeds for artificial sun tanning.

2. X-rays are used to check for counterfeit notes.

3. Visible light can damage human proteins and DNA.

4. Microwaves are used in satellite communications.

30 / 40

Which graph represents the motion of a body falling vertically that reaches a terminal speed?

1. B

2. A

3. C

4. D

31 / 40

Electricity is transmitted over large distances through high-voltage power cables running alternating current. What are the advantages of using high-voltage cables and alternating current?

1. D

2. C

3. B

4. A

32 / 40

A water wave moves from deep water to shallow water. Its speed decreases in shallow water. Which statement correctly describes the frequency and wavelength of the wave in the shallow water?

1. Both frequency and wavelength remain unchanged.

2. Frequency decreases while wavelength remains unchanged.

3. Both frequency and wavelength decrease.

4. Frequency remains unchanged while wavelength decreases.

33 / 40

Which type of electromagnetic radiation has the lowest frequency while travelling through a vacuum?

1. infra red waves

2. gamma rays

3. microwaves

4. light waves

34 / 40

Which of the following shows the outcome of installing the fuse in the neutral wire?

1. The filament in the fuse will melt when excessive current flows, and the device will be disconnected from high electric potential.

2. The filament in the fuse will not melt when excessive current flows, and the device will be disconnected from high electric potential.

3. The filament in the fuse will melt when excessive current flows, and the device will still be connected to high electric potential.

4. The filament in the fuse will not melt when excessive current flows, and the device will still be connected to high electric potential.

35 / 40

An experiment is carried out as shown in the diagram.

The ice takes a long time to melt, even though the water at the top of the boiling tube is boiling. Which statement best explains this?

1. Water is a poor conductor of heat.

2. Cold water at the top of the boiling tube sinks to the bottom.

3. Hot water at the bottom of the boiling tube rises to the top.

4. The wire gauze prevents energy transferred by heating from reaching the ice.

36 / 40

Which of the following statements (s) is/are true for an object being heated?

I. Its temperature always increases.

II. Energy in the internal store always increases.

III. Energy in the internal and potential stores cannot increase at the same time.

1. II and III only

2. II only

3. All of the above

4. I and II only

37 / 40

The diagram shows a network of resistors. Each resistor has a resistance of 6.0 Ω.

What is the total resistance of the network between points X and Y?

1. 7.2

2. 18

3. 5.0

4. 3.0

38 / 40

Two identical beakers contain the same mass of liquid.
Each beaker contains a different liquid.

Liquid Q has a density ρ.
What is the density of liquid P

1. 9ρ

2. ρ

3. 3ρ

4. ρ ÷ 3

39 / 40

In a Brownian motion experiment involving smoke particles in air, heavy particles settle quickly but very small particles remain suspended for long periods of time. Which statement explains why the very small smoke particles do not settle?

1. The small smoke particles have the same density as the air.

2. Air pressure has a greater effect on very small smoke particles.

3. Molecular bombardment by air molecules keeps the very small smoke particles suspended.

4. The Earth’s gravitational field does not act on very small smoke particles.

40 / 40

The half-life of a certain radioactive element is such that 7/8 of a given quantity decays in 12 days.

What fraction remains undecayed after 24 days?

1. 1/64

2. 1/128

3. 1/16

4. 1/32

Your score is

The average score is 14%

Physics MCQ Paper 1 now carries a 30% weightage under the current syllabus.
This is a significant portion that can easily impact your final grade by 2–3 bands. To maximise your score, aim for full marks by doing plenty of targeted practice. It might make the difference between A1 and A2.

Never underestimate the difficulty of multiple-choice questions — they are often designed to test your precision and attention to detail. Always check your answers carefully, manage your time wisely, and stay alert for tricky questions.

How are the questions being set?

-Knowledge with Understanding, approximately 45% of the marks with approximately 15% allocated to recall.

-Handling Information and Solving Problems, approximately 55% of the marks.