International A-Level Physics: Revision Guide and Exam Technique

International A-Level Physics is demanding. It requires strong mathematical skills, deep conceptual understanding, and the ability to apply principles to unfamiliar situations. But it’s also one of the most rewarding A-Levels and opens doors to engineering, physical sciences, medicine, and beyond.

This guide covers the key topics, mathematical expectations, and exam strategies for the major international boards.

Which Board Are You On?

Cambridge International A-Level (9702)

AS Level: Papers 1 (multiple choice), 2 (structured questions), 3 (practical)
A2 Level: Papers 4 (structured questions) and 5 (planning, analysis, and evaluation)
Content is divided into AS and A2 sections, examined in separate sessions

Edexcel International A-Level (YPH11/YPH21)

Unit 1: Mechanics and Materials
Unit 2: Waves and Electricity
Unit 3: Practical Skills
Unit 4: Further Mechanics, Fields, and Particles
Unit 5: Thermodynamics, Radiation, Oscillations, and Cosmology
Unit 6: Practical Skills (A2)

Both boards test similar core physics, but the structure and emphasis differ. Know your specification.

Core Topics

Mechanics (AS)

This is the foundation. Everything from forces and motion to energy and momentum.

Key areas:

Kinematics: the equations of motion (s = ut + ½at², v² = u² + 2as, etc.)
Newton’s laws and their application to real scenarios
Moments, equilibrium, and centre of mass
Work, energy, and power
Momentum and collisions (conservation of momentum, elastic vs inelastic)

Exam focus: Mechanics questions often involve multi-step calculations. You need to identify which equation to use, substitute correctly, and handle units. Practise selecting the right equation from the information given — this is where most marks are lost.

Waves (AS)

Wave properties: frequency, wavelength, amplitude, speed (v = fλ)
Transverse and longitudinal waves
Superposition, interference, and diffraction
Stationary waves
The electromagnetic spectrum

Exam focus: Questions on stationary waves and interference patterns require careful diagram interpretation. Practise drawing and labelling wave diagrams.

Electricity (AS)

Current, voltage, resistance, and Ohm’s law
Series and parallel circuits
Kirchhoff’s laws
Potential dividers
Internal resistance and EMF

Exam focus: Circuit analysis questions can be algebraically intensive. Be systematic — label everything on the circuit diagram and apply Kirchhoff’s laws methodically.

Fields (A2)

Gravitational fields (including Newton’s law of gravitation, orbital mechanics)
Electric fields (Coulomb’s law, field strength, potential)
Magnetic fields (force on current-carrying conductors, electromagnetic induction)

Exam focus: Field questions require confident handling of inverse-square relationships and the ability to combine multiple concepts. These are the hardest questions on the paper and carry the most marks.

Nuclear and Particle Physics (A2)

Radioactive decay (α, β, γ)
Half-life calculations
Nuclear energy (binding energy, mass-energy equivalence)
The standard model (quarks, leptons, bosons) — Cambridge places particular emphasis on this

Thermal Physics (A2)

Ideal gas laws (pV = nRT)
Kinetic theory
Internal energy and the first law of thermodynamics
Specific heat capacity and specific latent heat

Mathematical Skills

International A-Level Physics is essentially applied mathematics. You need:

Confident algebra: rearranging equations, solving simultaneous equations
Trigonometry: resolving vectors into components, wave calculations
Logarithms: radioactive decay calculations, attenuation
Graph skills: calculating gradients, determining areas under curves, identifying relationships from graph shapes
Unit analysis: checking that your answer has the correct units is a powerful error-detection tool

If your maths feels weak, address this alongside your physics revision. A physics student who can’t handle the maths will struggle regardless of how well they understand the concepts.

Practical and Experimental Questions

Both Cambridge and Edexcel include significant marks for practical skills, either through a practical exam or through written questions about experimental design.

You should be able to:

Plan an experiment with identified variables (independent, dependent, control)
Describe how to reduce systematic and random errors
Process data including calculating uncertainties
Plot graphs with correct axes, scales, and error bars
Draw conclusions from experimental data
Evaluate experimental methods and suggest improvements

Cambridge Paper 5 specifically tests planning and analysis. Practise these skills with past papers — the format is predictable and rewards preparation.

Exam Technique

Read the Question Stem Carefully

Physics questions often contain crucial information in the preamble. A diagram, a stated assumption, or a given value that you overlook will lead you down the wrong path.

State Your Assumptions

In longer questions, examiners sometimes award marks for stating assumptions (e.g., “assuming no air resistance” or “assuming the gas behaves ideally”). If in doubt, state it.

Use Standard Notation

Write equations before substituting numbers. This makes your working clearer and helps the examiner award method marks if your final answer is wrong.

Check Orders of Magnitude

If your answer for the speed of a car is 3 × 10⁸ m/s, something has gone wrong. Develop an instinct for reasonable answers.

Revision Strategy

Revise topic by topic, working through the specification systematically
Do calculation practice daily — even 15 minutes of problem-solving keeps your maths sharp
Use past papers extensively — both boards have decades of papers available with mark schemes
Create formula sheets and practise recalling equations from memory
Draw diagrams for every problem — visualising the physics helps you identify the right approach

UpGrades offers International A-Level Physics practice covering both Cambridge and Edexcel specifications, with questions that build from foundational concepts to exam-level problem-solving.

Physics rewards understanding over memorisation. If you truly understand why something happens, you can work out the answer to almost any question. Focus on depth of understanding, support it with mathematical fluency, and the grades will follow.