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

1) The diagram shows a permanent magnet approaching a solenoid at a constant speed.

1. C

2. B

3. D

4. A

2 / 40

2) A light dependent resistor (LDR) and a 500 Ω resistor form a potential divider between voltage lines held at +30 V and 0 V as shown in the diagram. The resistance of the LDR is 1000 Ω in the dark but drops to 100 Ω in bright light.

What is the corresponding change of potential difference between X and Y when the LDR is placed in a dark room and then move to a bright room?

1. a fall from 20 V to 5 V

2. a rise from 5 V to 20 V

3. a rise from 5 V to 30 V

4. a fall from 30 V to 5 V

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3) The graph shows the total resistive force that acts on a car of mass 830 kg over a period of time. The car is at rest at t = 0 s. A constant driving force of 2500 N acts on the car from t = 2 s to t = 24 s.

Which statement is incorrect?

1. The acceleration of the car is zero after t = 16 s.

2. The car is stationary from t = 0 s to t = 2 s.

3. The resultant force acting on the car increases from t = 2 s to t = 16 s.

4. The acceleration of the car is 3.0 m/s2 at t = 2 s.

4 / 40

4) In the circuit shown, R1 and R2 are identical resistors.

Which changes to the electrical components X and Y will increase the reading of the ammeter by the greatest amount?

1. C

2. D

3. A

4. B

5 / 40

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

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

2. The filament in the fuse will 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.

6 / 40

6) The acceleration of free fall on a particular planet is 8.0 m s-2. An object was dropped from rest and hit the ground after 1.5 s.

Air resistance is negligible.

From what height was the object dropped?

1. 9.0 m

2. 18.0 m

3. 6.0 m

4. 12.0 m

7 / 40

7) The diagram shows the speed-time graph of a moving object over a period of 50 s.

What is the average speed of the object when it is decelerating?

1. 11 m/s

2. 12 m/s

3. 10 m/s

4. 17 m/s

8 / 40

8) A gas is in a sealed container of constant volume. The gas is heated and the pressure of the gas on the walls of the container increases.

How do the particles of the gas cause this increase in pressure?

1. They expand.

2. They vibrate faster.

3. They hit the container more frequently.

4. They hit each other more frequently.

9 / 40

9) Alex is jogging at constant speed beside a road. He sees the traffic lights in front of him turn amber, so he begins to jog at a lower constant speed. Which distance-time graph illustrates Alex’s motion?

1. D

2. A

3. C

4. B

10 / 40

10) 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. $63.50

3. $2.25

4. $378

11 / 40

11) The pressure inside a gas cylinder is measured separately using two different mercury
manometers as shown in Fig. P and Q. One of the manometers has an open end while the other has a sealed end.
A barometer, as shown in Fig. R, is used to measure the atmospheric pressure at the location of the experiment.

The diagrams are not drawn to scale.
What is the height, h, of the mercury in Fig. Q?

1. 720 mm

2. 40 mm

3. 1000 mm

4. 800 mm

12 / 40

12) 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 upwards

2. moves downwards

3. does not move

4. moves out of the plane of paper

13 / 40

13) The diagram shows two wires, X and Y, made of the same material.

Wire X has resistance R and length 𝑙𝑙. Wire Y is twice as long as wire X, and its radius, r, is half of that of wire X.

What is the resistance of wire Y?

1. 8R

2. 2R

3. 4R

4. R/2

14 / 40

14) A 0.30 kW heater is used to heat a well-insulated 3.0 kg mass of copper for 5 minutes.

The temperature rises by 75 oC.

What is the specific heat capacity of copper?

1. 6.7 J/(kg oC)

2. 0.0067 J/(kg oC)

3. 0.40 J/(kg oC)

4. 400 J/(kg oC)

15 / 40

15) A girl pulls a 40 kg block up a smooth 30° inclined plane. The inclined plane is 10 m long and the block is pulled from the bottom of the inclined plane to the top in 40 s. Take g to be 10 N/kg.

What is the average useful power output of the girl?

1. 5W

2. 100W

3. 10W

4. 50W

16 / 40

16) Bats produce ultrasound to navigate.

What is the possible frequency range of ultrasound waves?

1. 0 Hz to 20 Hz

2. 20 kHz to 120 kHz

3. 20 Hz to 20 kHz

4. 20 Hz to 1200 Hz

17 / 40

17) Which statement about electromagnetic waves is correct?

1. Microwaves are used in satellite communications.

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

3. Visible light can damage human proteins and DNA.

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

18 / 40

18) An insulated beaker contains 300 g of water, initially at 30 °C. Water at 100 °C is added until the temperature of the mixture reaches 50 °C. The specific heat capacity of water is 4.2 J/(g°C).

How much water is added?

1. 120 g

2. 750 g

3. 180 g

4. 60 g

19 / 40

19) The diagram shows a simple d.c. electric motor.

When the switch is closed, which of the following statements is correct?

I. A current will flow round the coil in the direction PQRT.

II The coil will rotate in a clockwise direction when viewed from side PT.

III The split-ring commutator reverses the current after every complete cycle.

1. II and III

2. I only

3. I and III

4. III only

20 / 40

20) The diagram below shows light travelling from water and undergoing refraction.

1. D

2. A

3. B

4. C

21 / 40

21) The following circuit is set up

What is the reading on the ammeter?

1. 0.33 A

2. 0.9 A

3. 1.5 A

4. 3.0 A

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22) A gas supply is connected to a mercury barometer. The same gas supply is then connected to a water barometer.

The density of mercury is 13 600 kg / m3 and the density of water is 1000 kg / m3. What is the value of h?

1. 0.82 m

2. 82 m

3. 68 m

4. 0.68 m

23 / 40

23) 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. real and upright

2. virtual and upright

3. virtual and inverted

4. real and inverted

24 / 40

24) A metal rod AB is placed on two smooth horizontal metal rails on the bench. The rail and the rod are subjected to an external magnetic field. The top view of the setup is shown below.

When switch S is closed, in which direction will rod AB move?

1. to the left of the page

2. into the page

3. out of the page

4. to the right of the page

25 / 40

25) Which instrument is most suitable for measuring the internal diameter of a pipe?

1. digital calipers

2. manometer

3. measuring cylinder

4. digital micrometer

26 / 40

26) 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. A

3. B

4. C

27 / 40

27) A builder holding a brick of mass 3000 g drops the brick on his foot. What is a reasonable estimate of the change in the gravitational potential store of the brick?

1. 3000 J

2. 300 J

3. 30 J

4. 30000 J

28 / 40

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

1. infra red waves

2. light waves

3. gamma rays

4. microwaves

29 / 40

29) A rubber ducky is released from the bottom of a pool of water. Almost immediately, it rises at a constant speed to reach the surface of the water. Which of the following best describes the resultant force acting on the rubber ducky?

1. zero

2. upwards and less than the rubber ducky’s weight

3. upwards and greater than the rubber ducky’s weight

4. upwards and equal to the rubber ducky’s weight

30 / 40

30) The diagram shows two buoys P and Q sitting on a pond. A wave moves across the pond from left to right.

At the moment shown, buoy Q is at the crest and buoy P is at the trough. Which row describes the movement of the buoys during the next cycle of the wave?

1. D

2. B

3. C

4. A

31 / 40

31) The diagram shows the rest position of a balancing toy near the edge of a table. Which position is most likely to be the center of gravity of the toy?

1. B

2. C

3. D

4. A

32 / 40

32) The front wheel of a car is turned in a anticlockwise direction by the engine as the car accelerates towards the left, as shown in the diagram. There is a force of friction between the wheel and the road.

1. C

2. D

3. B

4. A

33 / 40

33) 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 only

2. All of the above

3. II and III only

4. I and II only

34 / 40

34) 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. D

4. C

35 / 40

35) 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. 3ρ

2. ρ ÷ 3

3. 9ρ

4. ρ

36 / 40

36) The speed of a wave is 4.0 × 10^5 m/s. The wavelength of the same wave is measured to be 5.0 × 10^6 m.

Determine the period of the wave.

1. 0.080 s

2. 2.0 × 10^12 s

3. 12.5 s

4. 5.0 × 10^-13 s

37 / 40

37) The diagram below shows a simple mercury barometer that has been correctly constructed. At which point in the mercury column is the pressure equal to 10 cm Hg less than the atmospheric pressure?

1. A

2. C

3. D

4. B

38 / 40

38) Object X is stationary and positively charged. It experiences a force due to the field produced by object Y. The arrows show the direction of the field produced by Y.

Which statement about the direction of the force on X is correct?

1. It is towards the left because it is in a magnetic field.

2. It is towards the left because it is in an electric field.

3. It is towards the right because it is in an electric field.

4. It is towards the right because it is in a magnetic field.

39 / 40

39) A parachutist falls from a stationary balloon at time t = 0 s. The velocity-time graph for the parachutist from time t = 0 s until the time when he is just above the ground is shown.

1. A

2. B

3. C

4. D

40 / 40

40) A ray of light passes from glass to air. In glass, the speed of light is 1.8 × 10^8 m/s.

What is the critical angle for light passing from glass to air?

1. 37 degrees

2. 18 degrees

3. 30 degrees

4. 42 degrees

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.