Free ZIMSEC O-Level Revision

Physics Revision & Mock Test

Study the core Physics topics, practise original questions, receive an instant mark, read corrections and see which topics need more work.

15 topic guides · 20-question mock · instant corrections

Practice notice: Original New Horizon practice questions – not an official ZIMSEC examination paper.

Physics topic guides

1. Measurement and Physical Quantities

Learn

Use SI units, measuring instruments, significant figures, density and uncertainty. Repeat measurements and identify sources of error.

Exam focus: Always include units and sensible precision.

2. Kinematics

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Describe distance, displacement, speed, velocity and acceleration using equations and graphs.

Exam focus: Gradient and area have different meanings on motion graphs.

3. Forces and Newtonian Mechanics

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Use resultant force, mass, acceleration, weight, momentum and Newton’s laws to explain motion.

Exam focus: Distinguish mass in kilograms from weight in newtons.

4. Machines

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Calculate mechanical advantage, velocity ratio and efficiency for levers, pulleys and other machines.

Exam focus: Efficiency cannot exceed 100 percent.

5. Mechanical Structures

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Identify tension, compression, bending, shear, stability and strengthening methods in structures.

Exam focus: Triangles and cross-bracing improve rigidity.

6. Work, Energy and Power

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Work transfers energy; power is the rate of energy transfer. Apply conservation of energy and calculate efficiency.

Exam focus: Use joules for work and energy, watts for power.

7. Thermal Physics

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Explain temperature, internal energy, expansion, heat capacity, latent heat and heat transfer by conduction, convection and radiation.

Exam focus: During a change of state temperature may remain constant.

8. Internal Combustion Engines

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Describe intake, compression, power and exhaust strokes and relate engines to energy efficiency and pollution.

Exam focus: Separate the four-stroke sequence correctly.

9. Waves

Learn

Use wavelength, frequency, amplitude and wave speed. Compare transverse and longitudinal waves and explain reflection, refraction and diffraction.

Exam focus: Wave speed equals frequency multiplied by wavelength.

10. Optics

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Apply reflection and refraction, ray diagrams, lenses, mirrors and the electromagnetic spectrum.

Exam focus: Angles are measured from the normal.

11. Electricity

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Use charge, current, potential difference, resistance, energy and power in series and parallel circuits.

Exam focus: An ammeter is series; a voltmeter is parallel.

12. Magnetism

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Describe magnetic fields, permanent and induced magnetism and forces between poles.

Exam focus: Field lines outside a magnet run north to south.

13. Electromagnetism

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Explain force on a current, motors, electromagnetic induction, generators and transformers.

Exam focus: Changing magnetic flux induces an emf.

14. Electronics

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Recognise diodes, LEDs, thermistors, LDRs, transistors and logic gates in control circuits.

Exam focus: Relate sensor resistance change to output behaviour.

15. Atomic and Nuclear Physics

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Describe atomic structure, isotopes, alpha, beta and gamma radiation, half-life, fission, fusion, uses and safety.

Exam focus: Compare penetration, ionisation and deflection of radiation.

Physics mock test

Choose one answer for each question, then submit. Unanswered questions are marked incorrect.

1. The SI unit of force is the:

joule newton watt pascal

2. Density is calculated using:

mass divided by volume volume divided by mass mass times speed force divided by area

3. A car travels 100 m in 5 s. Its average speed is:

5 m/s 20 m/s 50 m/s 500 m/s

4. Acceleration is the rate of change of:

distance velocity mass energy

5. Weight is calculated by:

mass divided by gravity mass times gravitational field strength force times distance density times volume

6. If resultant force is zero, an object may:

only accelerate remain at rest or move at constant velocity lose all mass always fall

7. Mechanical efficiency is useful output divided by input, multiplied by:

10 percent 100 percent 1000 percent 1 percent

8. Which shape is commonly used to make a frame rigid?

triangle circle only spiral semicircle

9. Power is:

energy transferred per unit time force per unit area mass per unit volume distance per unit time

10. During melting of a pure substance, its temperature:

always rises rapidly remains constant while energy breaks bonds falls to zero becomes negative

11. In a four-stroke engine, the power stroke follows:

exhaust compression intake only cooling

12. Wave speed equals:

frequency divided by wavelength frequency times wavelength amplitude times time distance times mass

13. Sound in air is mainly a:

transverse electromagnetic wave longitudinal mechanical wave stationary light wave nuclear wave

14. The angle of reflection equals the angle of:

diffraction incidence deviation polarisation

15. A convex lens can:

only absorb light converge parallel rays stop refraction create magnetic fields

16. An ammeter is connected:

in parallel in series without wires across the battery only

17. For two resistors in series, total resistance is:

their sum always zero their product only less than either resistor

18. Outside a bar magnet, field lines go from:

south to north north to south east to west centre to centre

19. A transformer works using:

static charge only electromagnetic induction chemical reaction nuclear fission

20. Which radiation is most strongly ionising?

alpha beta gamma microwave

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