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

Ultrasound is high-pitched and cannot be heard by human ears. However, ultrasound has many uses.

Which of the following is/are the correct use/s of ultrasound?

(1) Checking for cracks or damages in materials.

(2) Medical scanning of organs and tissues.

(3) Radar systems used by air traffic controllers to detect the location of an aeroplane.

1. (1) and (3) only

2. (2) only

3. (1) and (2) only

4. (1) only

2 / 40

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 30 V

3. a fall from 30 V to 5 V

4. a rise from 5 V to 20 V

3 / 40

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. 180 g

2. 120 g

3. 750 g

4. 60 g

4 / 40

A simple electromagnet can be made by winding a wire round an iron nail and supplying a current through a cell as shown in the diagram below.

1. A

2. B

3. D

4. C

5 / 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 not melt when excessive current flows, and the device will still be connected to high electric potential.

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

6 / 40

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

In which direction is the beam deflected?

1. towards the south pole

2. out of the page

3. into the page

4. towards the north pole

7 / 40

A converging lens L acts as a magnifying glass when an object AB is placed 4.0 cm from the centre of the lens. The image CD is 6.0 cm from A. Focal length of the lens is 6.0 cm.

What are the characteristics of the image formed when the object is placed 12.0 cm away from the centre of the lens ?

1. real and same size as object

2. real and diminished

3. virtual and diminished

4. virtual and same size as object

8 / 40

Alpha, beta and gamma radiations have various depths of penetration in matter and different charges.

Which row best summarises the penetration and charge of each radiation?

1. B

2. C

3. A

4. D

9 / 40

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 equal to the rubber ducky’s weight

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

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

10 / 40

The gravitational field strength on Earth is 9.8 N/ kg. The gravitational field strength on Mars is 3.7 N/ kg. The difference between the weight of an object on Earth and the weight of the same object on Mars is 25 N.

What is the mass of the object?

1. 4.1 kg

2. 6.8 kg

3. 1.9 kg

4. 2.6 kg`

11 / 40

A plastic tube is immersed in a liquid of refractive index 1.4. Light travelling in the plastic tube strikes the inside surface at an angle of incidence of 70°. The light undergoes total internal reflection.

1. D

2. A

3. C

4. B

12 / 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. $63.50

2. $2.25

3. $378

4. $0.05

13 / 40

The diagram shows an ornament hung from a ceiling. It consists of objects X, Y and Z suspended from light rods A and B. The masses of X, Y and Z are such that the rods are horizontal.

1. D

2. C

3. B

4. A

14 / 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. 1.6

2. 1.2

3. 1.7

4. 1.3

15 / 40

The diagram shows the distance-time graph of a moving object.

Which of the following describes this moving object?

1. It is a ball thrown vertically upwards and falling back to the thrower.

2. It is a train slowing down and coming to a stop at a train station.

3. It is a car that starts from rest and speeds up as it moves away from a traffic signal.

4. It is a rock that is dropped from a high cliff and falling into the sea below

16 / 40

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. B

2. C

3. A

4. D

17 / 40

Wiping the body of a patient who has a high fever with a wet towel makes use of the cooling effect of evaporation. When liquid evaporates, some liquid molecules in the liquid escape.

Which molecules in the liquid escape?

1. the molecules at the bottom of the liquid with less energy than others

2. the molecules at the surface of the liquid with less energy than others

3. the molecules at the bottom of the liquid with more energy than others

4. the molecules at the surface of the liquid with more energy than others

18 / 40

Nuclear fusion is a reaction that can take place in the sun.
Which row describes this reaction?

1. A

2. B

3. C

4. D

19 / 40

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. 40 mm

2. 720 mm

3. 1000 mm

4. 800 mm

20 / 40

The diagram shows a working barometer. Which of the following would not cause the height h of the mercury column to vary?

1. Change in gravitational field strength.

2. Adding mercury to the trough.

3. Leakage of air into the tube.

4. Change in the temperature.

21 / 40

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. 5.0 × 10^-13 s

2. 0.080 s

3. 12.5 s

4. 2.0 × 10^12 s

22 / 40

Which process(es) of thermal energy transfer require a medium?

1. convection and radiation

2. conduction and convection

3. conduction only

4. radiation only

23 / 40

The input power to a motor is 300 W. In 20 s, it lifts a load through a height of 6.0 m.

The efficiency of the motor is 60%.

What is the weight of the load?

1. 100 N

2. 900 N

3. 1000 N

4. 600 N

24 / 40

Which of the following best describes the conventional current and its unit?

1. It is the rate of flow of positive charges and its unit is the ampere.

2. It is the rate of flow of positive charges and its unit is the coulomb.

3. It is the rate of flow of negative charges and its unit is the ampere.

4. It is the rate of flow of negative charges and its unit is the coulomb.

25 / 40

The figure shows an iron bar P and steel bar Q being wound by wire and connected to a d.c. supply. A compass is placed between the two metal bars at position X.

1. B

2. C

3. D

4. A

26 / 40

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. D

2. C

3. B

4. A

27 / 40

A loudspeaker and a microphone are placed side by side in front of a wall. The loudspeaker makes a sound that is detected by the microphone. The microphone is connected to a device known as an oscilloscope, which is set so that each horizontal division on its screen represents a duration of 0.01 s. The microphone detects the original sound and the echo.

The speed of sound in air is 300 m/s.

What is the distance between the loudspeaker and the wall?

1. 24 m

2. 48 m

3. 12 m

4. 6.0 m

28 / 40

A gymnast of mass 60 kg lands on a trampoline. If he rebounds upwards with an acceleration of 0.60 m/s^2, what is the maximum force exerted by the trampoline on the gymnast?

1. 672 N

2. 564 N

3. 36 N

4. 636 N

29 / 40

As air is sucked from a straw out of a sealed packet drink, the packet shrinks in volume.

Which of the following best explains why the packet drink shrinks in volume?

1. The kinetic energy of the air molecules in the packet drink has decreased and the frequency of collisions of the air molecules and packet wall has decreased.

2. The air molecules are in continuous random motion.

3. The collision of air molecules with the internal surface area of packet drink has decreased.

4. The air molecules move more quickly when they are heated.

30 / 40

A magnetic field is produced when a current flows through a straight wire XY. Which of the following correctly shows the magnetic field pattern produced by wire XY?

1. D

2. C

3. A

4. B

31 / 40

Which statement about electromagnetic waves in a vacuum is correct?

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

2. Microwaves have longer wavelengths than radio waves.

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

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

32 / 40

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

Which words correctly complete blanks 1 and 2?

1. D

2. A

3. B

4. C

33 / 40

An electric heater which is rated ‘240 V, 1500 W’ is connected to a 3-pin socket. Which of the following correctly describes the current in the neutral wire and the potential difference between the earth and neutral wire during normal operation?

1. D

2. B

3. C

4. A

34 / 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 S-pole into end P

3. pushing the N-pole into end P

4. pulling the N-pole out of end Q

35 / 40

A drone moves eastwards and arrives at a point due east of its starting point.

The drone has a speed of V in still air.

A wind of speed W is blowing from north to south, affecting the drone.

Which diagram correctly represents the resultant velocity, R, of the drone?

1. D

2. A

3. C

4. B

36 / 40

A stone has a mass of 390 g and a density of 2.7 g/cm3. Cooking oil has a density of 0.90 g/cm3.

Which mass of cooking oil has the same volume as the stone?

1. 130 g

2. 1200g

3. 900g

4. 160g

37 / 40

1. A

2. D

3. C

4. B

38 / 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 speed of sound at the original location is 1.5 times as fast as at the new location.

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

39 / 40

A wire has a resistance of 8.0 Ω. A second wire, made of the same material, has double the length and half the thickness.

What is the resistance of the second wire?

1. 16 ohms

2. 32 ohms

3. 64 ohms

4. 8 ohms

40 / 40

A block of wood of mass 2.0 kg is pushed along the horizontal flat surface of a bench with a force of 4.0 N. It moves at constant speed. When the pushing force is increased to 12 N, what is the acceleration of the block?

1. 8.0m/s^2

2. 4.0m/s^2

3. 0m/s^2

4. 6.0m/s^2

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.