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A-Level Physics (9702) Paper 4 Mock: Circular Motion, Electromagnetism, Quantum, Atomic
TUTORZONE ORIGINAL MOCK PAPER · CAMBRIDGE A LEVEL PHYSICS (9702) PAPER 4 (A2 STRUCTURED)
Written to the Cambridge 9702 syllabus (2025-2027): Paper 4 (A Level structured) is 100 marks over 2 hours, 38.5% of the A Level. There are also Paper 1 (MC 40), Paper 2 (AS structured 60), Paper 3 (practical 40) and Paper 5 (planning 30). This is a Paper 4 mock: 10 questions for 100 marks with worked answers.
What is in the A-Level Physics (9702) exam?
Direct answer: A Level candidates sit five papers: Paper 1 (MC 40), Paper 2 (AS structured 60, 1 h 15), Paper 3 (practical 40, 2 h), Paper 4 (A2 structured 100, 2 h) and Paper 5 (planning 30, 1 h 15).
Assessment at a glance (2027)
| Component | Content | Weighting | Duration |
|---|---|---|---|
| Paper 4 (A Level structured) | Structured questions, 100 marks | 100 (38.5% A Level) | 2 h |
| Paper 5 (Planning, Analysis and Evaluation) | Two compulsory questions, 30 marks | 30 (11.5% A Level) | 1 h 15 min |
| Paper 1/2/3 (AS level) | MC 40 + structured 60 + practical 40 | 140 (AS) | 1h15 / 1h15 / 2h |
Ten questions in 2 hours is about 11 minutes each. Write the formula first (a = v^2/r, F = Bqv, E = hf), then substitute, then give the unit – all three carry marks.
How this paper was built
This is a TutorZone original mock paper: the questions follow the Cambridge 9702 structure (Paper 4 A2 structured, 100 marks, 2 h) and the answers are our own computations, not Cambridge past papers or marking references.
Every answer was recomputed programmatically.
Pacing
| Section | Marks | Suggested time | What to do first |
|---|---|---|---|
| Paper 4 (A Level structured) | 100 (38.5% A Level) | about 11 min per question, 10 to check | write the formula first, then substitute |
| Paper 5 (Planning, Analysis and Evaluation) | 30 (11.5% A Level) | about 35 min per question | design, analyse, evaluate |
| Paper 1/2/3 (AS level) | 140 (AS) | AS underpins A2 | A2 builds on AS content |
How do I gain marks on structured questions?
Direct answer: three steps – write the formula (e.g. F = Bqv), substitute, then give the answer with its unit. All three carry marks.
Paper 4: structured questions (10 questions, 100 marks)
All compulsory; aim for 110 minutes with 10 to check. Give the formula then substitute.
Question 1 (10 marks)
An object moves at 10 m/s in a circle of radius 5 m. Calculate the centripetal acceleration.
Question 2 (10 marks)
A 2 kg object moves at 10 m/s in a circle of radius 5 m. Calculate the centripetal force.
Question 3 (10 marks)
A charge of 2×10^-3 C experiences a force of 6 N. Calculate the electric field strength.
Question 4 (10 marks)
A 2 m wire carries 4 A perpendicular to a 0.5 T field. Calculate the magnetic force.
Question 5 (10 marks)
An electron (charge 1.6×10^-19 C) enters a 0.4 T field at 2×10^6 m/s perpendicular to it. Calculate the magnetic force.
Question 6 (10 marks)
What is the energy of a photon of frequency 5×10^14 Hz (h = 6.63×10^-34 J s)?
Question 7 (10 marks)
An atom drops between two levels, emitting a photon of frequency 3×10^15 Hz. Calculate the energy difference.
Question 8 (10 marks)
A radioactive sample starts with 100 nuclei. How many remain after two half-lives?
Question 9 (10 marks)
A 70 kg person is on the Earth’s surface (mass 6×10^24 kg, radius 6.4×10^6 m, G = 6.67×10^-11). Calculate the gravitational force.
Question 10 (10 marks)
A 0.5 kg mass on a spring of spring constant 50 N/m oscillates in SHM. Calculate the period.
Which topics does Paper 4 cover?
Direct answer: circular motion, gravitation, electric fields, magnetic fields and the Lorentz force, quantum physics (photon energy, energy levels), radioactive half-life and simple harmonic motion.
Paper 4 worked answers
Question 1
Use a = v^2/r (3): a = 10^2 / 5 = 20 m/s^2 (7).
Question 2
Use F = mv^2/r (3): F = 2 x 10^2 / 5 = 40 N (7).
Question 3
Use E = F/q (3): E = 6 / (2×10^-3) = 3000 N/C (7).
Question 4
Use F = BIL (3): F = 0.5 x 4 x 2 = 4 N (7).
Question 5
Use F = Bqv (3): F = 0.4 x 1.6×10^-19 x 2×10^6 = 1.28×10^-13 N (7).
Question 6
Use E = hf (3): E = 6.63×10^-34 x 5×10^14 = 3.315×10^-19 J (7).
Question 7
Use delta-E = hf (3): delta-E = 6.63×10^-34 x 3×10^15 = 1.989×10^-18 J (7).
Question 8
Use N = N0 (1/2)^n (3): N = 100 x (1/2)^2 = 25 (7).
Question 9
Use F = GMm/r^2 (3): F = 6.67×10^-11 x 6×10^24 x 70 / (6.4×10^6)^2 = about 684 N (7).
Question 10
Use T = 2 pi sqrt(m/k) (3): T = 2 pi sqrt(0.5 / 50) = 0.628 s (7).
How do I calculate photon energy?
Direct answer: E = hf (h = 6.63×10^-34 J s); the energy is of order 10^-19 J.
Where these marks are usually lost
| Mistake | What it looks like | What it costs | Instead |
|---|---|---|---|
| Missing formula | Jumping to the number | The formula carries 3 marks | Write a = v^2/r, F = Bqv first |
| Wrong power of ten | 10^-19 as 10^-18 | Keep the exponent exact | Photon energy is of order 10^-19 J |
| Wrong unit | Force as N/C | Magnetic/electric force is in N | Field is N/C, force is N |
How to use this paper
First sit: the full 2 hours on all 10 questions with no references.
Mark it: check the formula, substitution and unit in every question.
Second sit: redo three to seven days later, aiming to finish inside 1 h 45 min.
What should I do after finishing this paper?
Direct answer: log questions where the formula or power-of-ten was wrong; redo in three to seven days; and drill Paper 5 planning questions.
FAQ
Is this a Cambridge paper?
No. The questions and answers are TutorZone originals, not Cambridge past papers or marking references.
How many papers does A-Level Physics have?
A Level candidates sit five: Paper 1 (MC 40), Paper 2 (AS structured 60), Paper 3 (practical 40), Paper 4 (A2 structured 100) and Paper 5 (planning 30).
How much is Paper 4 worth?
Paper 4 is 38.5% of the A Level – the largest single paper.
Official references
| Resource | What to check |
|---|---|
| Cambridge A Level Physics 9702 syllabus (2025-2027) | Confirm the Paper 1-5 marks and times |
| https://www.tutorzone.com.hk/en-igcse-physics-0625-paper-4-mock-2027/ | IGCSE Physics (0625) Paper 4 mock |
Related: A-Level Physics 9702 drilling guide (paper order and pacing) · practice area · IGCSE Physics Paper 4 mock · IGCSE Chemistry Paper 4 mock
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