Exam Intelligence · 4 Official Documents Analysed

How to Score Higher in AQA A Level Physics (7408)

Evidence-based Physics 7408 exam guide built from official AQA examiner reports and mark schemes. Specialised and comprehensive study tips — specific, cited insights so you can achieve top grades.

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Evidence-BasedBuilt from 4 official examiner reports & mark schemes (2022–2023)

What Are Assessment Objectives (AOs)?

Before we dive in, you need to understand how AQA actually marks your answers.

AO stands for Assessment Objective. Think of AOs as the different “skills” AQA tests you on in every single question. When an examiner marks your paper, they don't just give you a mark out of 12 based on how “good” your answer feels — they allocate specific marks to each AO separately.

For example, a 12-mark question might be split as: AO1 (2 marks) + AO2 (2 marks) + AO3 (2 marks) + AO4 (6 marks). If you write a perfect textbook answer but don't evaluate, you can only score 6 out of 12 — because the other 6 marks are specifically reserved for evaluation.

This is why understanding AOs matters: they tell you exactly what the examiner is looking for and how many marks each skill is worth. Here are the 3 AOs for this subject:

AO1

Demonstrate knowledge and understanding of scientific ideas, processes, techniques and procedures

33% (A-Level overall; AQA per-paper P1 34%, P2 32%, P3 31%)

Recall of physics facts, definitions, equations, units and standard procedures. Examiners stress that recall must be precise — quoting a Newton law in isolation, or omitting words such as 'rate of change' or 'per unit mass', loses marks even when the underlying physics is right.

AO2

Apply knowledge and understanding of scientific ideas, processes, techniques and procedures (in theoretical and practical contexts; when handling qualitative and quantitative data)

42% (A-Level overall; AQA per-paper P1 38%, P2 53%, P3 35%)

Apply equations to unfamiliar contexts, perform single and multi-step calculations, and interpret graphs and data. State the equation first, substitute clearly, watch for power-of-ten errors, and quote answers to an appropriate number of significant figures. Paper 2 carries the heaviest AO2 weighting (53%).

AO3

Analyse, interpret and evaluate scientific information, ideas and evidence, including in relation to issues, to make judgements and reach conclusions and to develop and refine practical design and procedures

25% (A-Level overall; AQA per-paper P1 28%, P2 15%, P3 32%)

Analyse experimental evidence, evaluate methods and conclusions, and link physics to unfamiliar contexts. Examiners explicitly note AO3 questions on Paper 1 (e.g. boat resonance) and Paper 2 (e.g. probe trajectories) reward flexible reasoning, not memorised mark schemes. Paper 3 carries the heaviest AO3 weighting (32%) since Section A is dedicated to practical skills and data analysis.

The key takeaway: Most students lose marks not because they lack knowledge (AO1), but because they skip the higher-order skills — building chains of reasoning (AO2) and making supported judgements (AO3). Everything below shows you exactly how to hit each AO based on what AQA examiners have written in their reports.

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Top Mistakes in A Level Physics 7408

The most common reasons students lose marks in A Level Physics 7408, cited directly from official AQA examiner reports across multiple sessions.

Internal resistance ignored or treated as a GCSE-level circuit — 'electricity follows the easiest path'

Repeated in Paper 1 2022 (Q04.5) and Paper 1 2023 (Q03.1) · Affects: Paper 1

What examiners say

“A major difference between problems on electricity at A-level and GCSE is the consideration of internal resistance. Correct answers for 04.5 were extremely rare”
— 7408/1, June 2022, Question 4

“Many students had difficulty answering the question. There were clear misconceptions associated with energy and potential difference, for example. Many students also missed out any reference to the internal resistance of the cell.”
— 7408/1, June 2023, Question 3

How to fix this

For any cell-with-load problem, write V = E - Ir as a separate line. Terminal pd falls as current rises. Never use emf as terminal pd. Treat the cell's internal resistance r as another series resistor when computing total current.

Vague, ambiguous or contradictory written answers in extended-writing questions

Flagged in every Paper 1 and Paper 2 report 2022-2023 · Affects: Paper 1, Paper 2

What examiners say

“Answers were often vague or ambiguous. Important details related to the role of the photon, or the significance of energy levels, were also often missing.”
— 7408/1, June 2022, Question 1

“Ambiguous and contradictory answers were relatively common. Students should be advised to make their answer clear in order to get credit.”
— 7408/1, June 2023, Question 1

How to fix this

Name the specific object (the photon, the W- boson, the cell) — never write 'it'. State the physical principle, then apply it to the situation. Re-read your sentence: if it could mean two things it scores zero.

Power-of-ten errors and dropped unit conversions

Paper 1 2022 (Q04.3, Q05), Paper 1 2023 (Q05.1), Paper 2 2022 (Q01.1, Q03.2) · Affects: Paper 1, Paper 2

What examiners say

“Most students were able to give a complete answer with only powers of ten errors causing problems for some in the final mark.”
— 7408/1, June 2022, Question 4

“powers of ten errors crept in because the potential scale was not recognised. This error was condoned in working out the gradient but was penalised in the final answer.”
— 7408/2, June 2022, Question 3

How to fix this

Write each conversion on its own line: kV = 10^3 V, nm = 10^-9 m, MeV to J = x 1.6 x 10^-13. Read graph axis prefixes before substituting. Carry 4+ sf through, only round at the end.

Quoting a Newton law in isolation without applying it to the question

Paper 1 2022 Q05, Paper 2 2022 Q02.2, Paper 2 2023 Q01.4 · Affects: Paper 1, Paper 2

What examiners say

“just quoting a Newton's law was not sufficient – it had to be related to a particular event or situation.”
— 7408/2, June 2022, Question 2

“It was common to see an absence of any reference to a Newton law.”
— 7408/2, June 2023, Question 1

How to fix this

After stating the law, immediately apply it: 'By Newton II, force = rate of change of momentum, so for the molecule of mass m hitting the wall the force is F = (mv-(-mv))/Dt = 2mv/Dt.' Always tie law to specific bodies.

Drawing graphs by 'general shape' without matching given data points

Paper 2 2022 Q02.4 and Q04.4, Paper 2 2023 Q04.1 and Q06.2 · Affects: Paper 2

What examiners say

“It was very common for students to miss the second mark through lack of care and by failing to use other useful data points for their graph.”
— 7408/2, June 2022, Question 2

“It appeared that most students did not consider Figure 5 in detail, because very few sketches had a horizontal initial section.”
— 7408/2, June 2023, Question 4

How to fix this

Before sketching, mark 2-3 calculated/given points on the axes (start value, midpoint, end value). Draw the curve through them. Check the limiting behaviour (zero, infinity, plateau) matches the physics.

Show-that questions losing marks because working is not laid out

Paper 1 2022 Q04.1, Paper 2 2023 Q06.3 · Affects: Paper 1, Paper 2

What examiners say

“This was a ‘show that’ question and students failed to gain marks when they did not make it clear what they were doing by setting out the equation and substituting the data.”
— 7408/1, June 2022, Question 4

“Not all the students started with the simple equation for density. Once this equation was given, the next error made was usually in the mass substitution”
— 7408/2, June 2023, Question 6

How to fix this

For 'show that': (1) write the symbolic equation, (2) substitute numbers with units, (3) compute to one more sf than the printed answer, (4) state final value. Never skip any of these four lines.

Confusing change-in-square with square-of-change in capacitor / KE problems

Paper 2 2022 Q03.4, Paper 2 2023 Q03.5 · Affects: Paper 2

What examiners say

“The calculation involved the difference between two squares of voltage which was interpreted by many as the difference in voltage squared.”
— 7408/2, June 2022, Question 3

“However, there were many who failed to gain this mark by using the square of the difference in speed in their calculation.”
— 7408/2, June 2023, Question 3

How to fix this

DKE = 1/2 m v^2 - 1/2 m u^2 (subtract the energies). DE_C = 1/2 C V2^2 - 1/2 C V1^2 (subtract the squared voltages). Never write 1/2 m (v-u)^2 or 1/2 C (V2-V1)^2 — those are mathematically different.

Refraction / total internal reflection — angle and ray-drawing errors

Paper 1 2022 Q06, Paper 1 2023 Q04 · Affects: Paper 1

What examiners say

“Many students realised that total internal reflection was taking place in 06.3, but drew rays that were obviously incorrect.”
— 7408/1, June 2022, Question 6

“A common error was misidentifying the critical angle as either the angle between the ray and the surface at the second boundary or the incident ray at the first”
— 7408/1, June 2023, Question 4

How to fix this

Always draw and label the normal first; angles are measured from the normal, never the surface. Use a protractor to set angle of incidence = angle of reflection. For TIR, check sin(theta_c) = 1/n before drawing.

Apply what you've learned

Practice identifying these mistakes in real papers. Try a recent paper and mark yourself — you'll spot these patterns immediately.

Try June 2024 All 7408 Papers

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What A Level Physics 7408 Examiners Reward

Patterns that consistently earn high marks in A Level Physics 7408, based on AQA examiner report commentary on top-scoring answers.

Lay out each calculation step so partial credit is unambiguous

Examiners repeatedly award partial credit only when working is clear. The mark scheme is designed for step-by-step rewards.

Source: 7408/1 June 2022, Q03 — 'Students should be encouraged to make each step in their calculations clear.'

Quote answers to at least three significant figures when data allows

Reports note that students who rounded early or stopped at 1-2 sf lost the final mark even with correct method.

Source: 7408/1 June 2023, Q03.2 — 'Answers that were set out clearly and gave a value to at least three s.f. were most likely to get full credit.'

Use a tangent (with a large triangle) to read gradients from curves

Capacitor and field questions reward students who draw a clear tangent and a large gradient triangle; small triangles lead to power-of-ten and rounding errors.

Source: 7408/2 June 2022, Q03.2 — 'the triangle from which they calculated the gradient was too small'

Refer explicitly to the figure / data given in the question

AO3-flavoured questions on Paper 2 reward candidates who quote specific features of the figure, not generic principles.

Source: 7408/2 June 2023, Q03.4 — 'They ignored the fact that distance has a bearing on the gravitational force on the probe.'

When a question asks for a comparison, write a comparison

Examiners distinguish description from comparison; one-sided answers about a single object lose half the available marks.

Source: 7408/1 June 2022, Q05.6 — 'Examiners were expecting to see a comparison, but many students only discussed the effect on the pendulum.'

Name objects rather than using ambiguous pronouns or generic phrases

Vague language like 'it', 'they will be more stable', 'because it's bigger' is consistently penalised across both papers.

Source: 7408/2 June 2023, Q07.5 — 'gave very flimsy answers such as “they will be more stable” and “they are more likely to be hit by a neutron”.'

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A Level Physics 7408 Answer Frameworks

Structured approaches for each A Level Physics 7408 question type, derived from AQA mark scheme requirements.

Calculation with units and significant figures

3-5 minutes per 3-mark calculation

Structure

Equation in symbols -> unit conversion line -> substitution with units -> evaluate -> final answer to 3 sf with unit

•Write the symbolic equation first — it earns a method mark even if the arithmetic later fails
•Show every unit conversion (kV, nm, MeV, mm^2 -> m^2) as a separate line
•Carry 4+ sf through intermediate steps, then round to 3 sf at the end
•Always include the unit on the final answer; examiners deduct otherwise

'Show that' derivation

2-3 minutes

Structure

State equation -> substitute given values with units -> evaluate to one more sf than the printed result -> state final value

•Make every step visible — the question is testing your method, not your final answer
•Compute to a sharper precision than the printed answer to demonstrate consistency
•Do not reverse-engineer from the printed result; examiners spot fudged intermediates
•Reference the equation by name (Snell's law, F = qvB) where helpful

Graphical analysis (tangent, gradient, area, sketch)

4-6 minutes

Structure

Identify the relevant region -> draw tangent or gradient triangle -> read both axes including prefixes -> state physical meaning

•Use a ruler. The gradient triangle hypotenuse should span at least half the line
•Read the axis prefixes (kV, mA, mum) before substituting numbers
•When sketching, mark 2-3 calculated/given data points first, then draw through them
•For area-under-curve: state what the area represents physically (work done, impulse, charge)

Evaluative / extended writing (AO3)

5-7 minutes

Structure

Identify the principle -> apply to the specific objects/figure -> compare both sides -> deliver clear conclusion

•Name the objects — 'the boat', 'the probe', 'the W- boson' — never use 'it'
•If the question says 'compare', write about both objects, not one
•Refer to the figure: 'in Figure 8 the angle of incidence is greater than the critical angle'
•Avoid unsupported one-liners like 'because it is bigger' — link to a quantity

Practice by topic

Use topical past papers to practice specific question types. Each topic collects questions from multiple years — perfect for drilling the frameworks above.

Topical Past Papers

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A Level Physics 7408 Command Words Decoded

Each command word in A Level Physics 7408 is a scoring instruction. Understanding what AQA examiners expect is critical to earning full marks.

state1 mark

Give a brief factual answer with no working — usually a value, name, or one-line statement.

Common mistake

Writing a long explanation when only a fact was wanted, or being so brief that the answer is ambiguous.

calculate2-4 marks

Find a numerical value. Show the equation, the substitution, and the final answer with units to appropriate sf.

Common mistake

Skipping the equation, dropping units, or rounding intermediates so the final answer is wrong by a small factor.

determine3-5 marks

Find a value, often by extracting data from a graph, table or figure first. Show the route from data to result.

Common mistake

Reading off a single point instead of using a tangent / gradient triangle when the graph is curved.

show that2-3 marks

Derive or arrive at a printed result. Every step — equation, substitution, evaluation — must be visible.

Common mistake

Working backwards from the answer or fudging intermediate values; examiners will not award marks if the route is unclear.

explain2-4 marks

Give a physics reason linking cause to effect, applied to the specific situation in the question.

Common mistake

Quoting a law in isolation (e.g. Newton's third law) without applying it to the bodies in the question.

deduce2-3 marks

Use given data plus a physics principle to reach a logical conclusion. State the principle and the deduction.

Common mistake

Stating the conclusion without showing the reasoning.

evaluate3-5 marks

Make a judgement supported by physics — typically AO3. Refer back to the figure or data and weigh both sides.

Common mistake

Listing facts without committing to a judgement, or making a one-line claim without evidence.

define1-2 marks

Give the precise specification definition. Every key word is a potential mark.

Common mistake

Giving a calculation method (e.g. 'mass times acceleration') instead of the formal definition.

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A Level Physics 7408 Diagram Checklist

Incorrect diagrams in A Level Physics 7408 are flagged in every AQA examiner report. Use this checklist before every practice and in the exam.

Force diagram on a body in equilibrium (e.g. block, pivoted rod, suspended mass)

Show every force acting ON the body: weight (mg, vertically down through centre of mass), normal reaction (perpendicular to surface), tensions in any ropes (along the rope, away from the body), applied forces with given direction. Label each arrow with magnitude and the body it acts on.

Common error: Putting forces on the wrong object (e.g. the rope instead of the block), or showing components of a single tension that the question said was uniform.

Circuit diagram with internal resistance (cell, ammeter, voltmeter, fixed/variable resistor)

Use standard symbols: cell with internal resistance r as a separate resistor in series. Voltmeter across the terminals reads V = E - Ir. Ammeter in series with the load. Label E, r, R, I and the measured voltage.

Common error: Treating terminal pd as emf; assuming current 'follows the easiest path' through parallel branches; missing the internal resistor entirely.

Refraction / total internal reflection ray diagram

Draw the normal at every boundary. Mark angle of incidence and angle of refraction (or reflection) from the normal — never from the surface. Use a protractor. For TIR, ensure incidence angle exceeds the critical angle theta_c where sin(theta_c) = 1/n.

Common error: Measuring angles from the surface; freehand rays that are clearly not at the calculated angle; mis-identifying which angle in a multi-boundary diagram is critical.

Gravitational / electric field lines around point or spherical sources

Radial lines from / towards the source. Density of lines indicates field strength. Equipotentials are concentric circles, perpendicular to field lines. For two-mass systems show the null point on the line joining the centres.

Common error: Drawing equipotentials as 'curved' rather than concentric; describing density of lines without linking it explicitly to mass or charge; placing arrows perpendicular to the field line instead of tangent.

SHM / circular motion: displacement-time and acceleration-displacement graphs

Axes: displacement x / m (or time t / s) × acceleration a / m s^-2 (or displacement x / m)

x-t: sinusoidal between +A and -A. a-x: straight line through origin with negative gradient (a = -omega^2 x). Mark amplitude A clearly and indicate phase relationship between displacement, velocity and acceleration.

Common error: Drawing a positive gradient on a-x; using SUVAT for SHM (acceleration is not constant); confusing amplitude with total distance travelled.

Capacitor charge/discharge curves on log and linear axes

Axes: time t / s × voltage V / V (linear) or ln(V/V_0) (log)

Linear axes: exponential decay V = V_0 e^(-t/RC). Log axes: straight line of gradient -1/RC. Mark the time constant tau = RC where V has fallen to ~37% of V_0.

Common error: Using the discharge equation for a charging situation; using the supply voltage as the voltage across the capacitor; not recognising that 21 s on the time axis is the full decay window.

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Topics Students Struggle With Most In A Level Physics 7408

These A Level Physics 7408 topics consistently produce the lowest scores. Prioritise these in your revision.

Internal resistance and emf vs terminal pd

Examiners describe correct answers as 'extremely rare' on Paper 1 2022 Q04.5; misconceptions about 'electricity following the easiest path' persist into A-level.

Affects: Paper 1

Forces in equilibrium with multiple components / moments

On Paper 1 2022 Q03.2 examiners noted 'much misunderstanding about the components of forces'; the rope tension being uniform was repeatedly missed.

Affects: Paper 1

SHM: deriving acceleration equation and resonance reasoning

On Paper 1 2023 Q06 examiners noted students rarely related the force equation to acceleration with a negative sign, and resonance answers omitted reference to amplitude being maximum at resonance.

Affects: Paper 1

Total internal reflection and critical-angle identification

Paper 1 2023 Q04.4 was 'one of the most discriminating questions on the paper', with students misidentifying the critical angle and using Snell's law incorrectly.

Affects: Paper 1

Ideal gas: kinetic energy, Newton's laws applied to molecules

Paper 2 2022 Q02.2 saw weak Newton's-law application; Paper 2 2023 Q01 had students adding potential energy to the kinetic energy of an ideal gas.

Affects: Paper 2

Capacitor energy difference (squares of voltages)

Paper 2 2022 Q03.4: 'The calculation involved the difference between two squares of voltage which was interpreted by many as the difference in voltage squared.'

Affects: Paper 2

Transformers and high-voltage transmission efficiency

Paper 2 2022 Q05 found explanations 'not of an A-level standard'; many students wrote that voltage flowed through the core and that high voltage 'reduces resistance'.

Affects: Paper 2

Nuclear physics: density of nucleus, neutron-rich fission products

Paper 2 2022 Q06.4 — 'Only a minority of students understood why the fission products would be neutron-rich.' Paper 2 2023 Q06.3 — students substituted mass without including nucleon number A.

Affects: Paper 2

Target your weak areas

The topics above are where most marks are lost. Use past papers and mark schemes to practice these specific areas until they become second nature.

Past Papers & Mark Schemes Topical Papers

Frequently Asked Questions

What papers make up AQA A Level Physics 7408?

Three written papers: 7408/1 (Paper 1, 85 marks, 2 hours) on particles, quantum, mechanics, materials and electricity; 7408/2 (Paper 2, 85 marks, 2 hours) on thermal physics, fields and nuclear physics; 7408/3 (Paper 3, 80 marks, 2 hours) on practical skills, data analysis and one optional topic.

Is a formula booklet provided in the AQA A-Level Physics 7408 exam?

Yes — AQA supplies the Physics Data and Formulae Booklet in every paper. It contains constants, formulae outside the syllabus rote-recall list, and astrophysics/optional-topic data. You still need to memorise core equations like F = ma, V = IR and v = f lambda.

What calculator is allowed in AQA A Level Physics 7408?

Any standard scientific calculator that complies with the JCQ instructions for candidates is permitted. Programmable / graphical calculators are allowed only if the memory is cleared. A protractor and a clear ruler with mm graduations are also explicitly expected for ray-diagram questions.

How is A-Level Physics 7408 different from AQA AS Physics 7407?

A-Level 7408 is a two-year linear qualification with three papers, including Paper 2's fields and nuclear physics content and Paper 3's optional topic — none of which appear in the standalone AS qualification. The AS qualification has its own separate papers and code; only the A-Level grade contributes to UCAS tariff in the same way as other linear A-Levels.

Put It All Into Practice

You now know exactly what AQA examiners reward and penalise. The next step is deliberate practice with real papers. We have 11 exam sessions available for A Level Physics 7408 — question papers, mark schemes, and examiner reports.

View All Past Papers Latest Session: June 2024 Topical Past Papers