Exam technique · 15 September 2026 · 7 min read
How to improve after a disappointing Physics mock: diagnose before revising
Updated 25 September 2026
A low Physics mock grade tells you that something needs attention. It does not, by itself, tell you what to revise. Two students with the same score may need very different help: one has missing topic knowledge, while another understands the physics but cannot carry a calculation through accurately.
The useful next step is to turn the marked script into a small set of specific problems. This guide works for IGCSE and A-Level students and gives parents a way to support revision without turning every conversation into a discussion about grades.
Get the evidence before making a timetable
Collect the marked paper, its mark scheme, your teacher’s comments and the topics the mock was intended to cover. Note whether it was a complete official paper, a selection of questions or a school-written assessment. That affects how much you can infer from its overall percentage.
Ask your teacher how the grade was assigned. A school mock boundary may be an estimate or a school policy; it is not automatically the eventual exam boundary. Focus first on the work you can improve rather than converting the same mark through several unrelated online tables.
Also identify questions you did not reach. A blank answer can mean missing knowledge, slow working, misreading or a deliberate decision to move on. Diagnose it by attempting the question again without a time limit, before opening the solution.
Give each mistake a cause and a repair
For each question, record the topic, what went wrong, the likely cause and one repair task. Avoid using ‘careless’ as a final diagnosis: it does not tell you what to practise. If you converted milliamperes incorrectly, name the conversion and practise it in several contexts.
- —Missing knowledge: explain the concept using notes, then reproduce the explanation without them.
- —Wrong model or equation: identify the physical situation and why the selected relationship applies.
- —Algebra or units: redo the calculation symbolically and practise the exact mathematical step that failed.
- —Incomplete explanation: add the missing causal link, then answer a fresh question on the same idea.
- —Practical or graph error: practise the particular skill, such as identifying a control variable or finding a gradient with units.
- —Time or interpretation: try a short timed set, marking command words and deciding when to move on.
An example: one wrong answer, three different repairs
Imagine a question about a 6.0 V supply and a current of 250 mA. The resistance is R = V/I = 6.0/0.250 = 24 Ω. This is an original practice example, not an exam-board question.
A student who writes 0.024 Ω may have substituted 250 without converting milliamperes. Their repair is unit conversion and a magnitude check. A student who multiplies voltage by current may be mixing up resistance and power; their repair is choosing an equation from the quantities and physical meaning. A student who gets 24 but gives watts needs to distinguish the quantity being calculated from another quantity in the same circuit.
All three students lost marks on ‘electricity’. Revising the entire electricity chapter in the same way would miss the reason each answer failed. A useful error record is precise enough to lead to different practice for each student.
Choose two priorities for the next week
Start with recurring weaknesses that affect several questions and are realistic to improve. For example, unit conversions and force diagrams may be more useful starting points than a single difficult question that requires a topic you have not yet been taught.
Limit the first week to two main targets while keeping other topics in light review. A target should describe a skill: ‘convert between mA and A before circuit calculations’ is actionable; ‘get an A’ is an outcome, not a revision task.
Write down how you will check each target. Four fresh calculations completed without conversion errors provide more useful evidence than four pages of copied solutions.
A two-week repair cycle
Use the first two days to review the paper and choose targets. Over the next few sessions, revisit the explanation or method, attempt short practice sets, mark them and write a correction that explains the mistake.
In the second week, mix the repaired skill with another topic and add some timed work. Return to a similar problem after a gap. If the method only works immediately after seeing an example, it needs more practice before you rely on it in a full paper.
Finish with a fresh mini-assessment of comparable scope. Record both the result and whether the original mistakes returned. A higher score on the identical paper can reflect memory of the answers; fresh questions are a stronger check that you can use the skill independently.
How parents and tutors can help
Ask the student to show one improvement and one unresolved question. Help protect a realistic study slot and make sure the right materials are available. If revision repeatedly ends in frustration, ask the school teacher to clarify the first repair target rather than simply increasing the workload.
When contacting a Physics tutor, send the qualification code, exam date, marked script and the student’s own explanation of what feels difficult. Those details allow a more useful conversation than the grade alone. No honest plan can promise a particular grade change from one mock; it can make the next steps clear and check whether they are working.
Questions, explained
Choose a question for a direct answer, then explore the explanation and supporting resources. Each answer has its own link to save or share.
How do I turn 'careless mistakes' into something I can actually practise?
Replace the label with the exact failed step: a prefix conversion, sign choice, copied value, missing unit or unread condition. Then design a short check that targets that step. Different mistakes need different repairs even when they occurred in the same topic.
If you substituted 400 mA as 400 A, write the conversion explicitly: 400 mA = 0.400 A. Try a small mixed set containing mA, A, minutes and seconds so you must decide when conversion is needed. If the error is a negative sign in momentum, draw the direction convention before substitution instead. The repair should change what you do at the point where the original mistake occurred.
How can I tell whether a blank mock answer came from lack of knowledge or lack of time?
Retry it without the time limit before opening the solution. If you can solve it independently, investigate pacing or question selection. If you still cannot start, identify the missing concept or method. Some blanks have both causes, so inspect the working as well as the final answer.
Record roughly where you got stuck: reading the context, choosing an equation, rearranging it or checking the result. A question that becomes easy only after you see the first line of the solution still reveals a starting-point difficulty. Practise that decision on fresh questions, then add timing. Simply telling yourself to work faster does not repair an uncertain method.
What if I am revising more but my Physics scores are not improving?
Check whether your revision matches the cause of the lost marks and whether the tests are comparable. Extra reading may not repair equation selection, experimental reasoning or timing. Use a small fresh assessment of a specific target to see whether the method is helping.
Keep a record of the task, help used and result. A difficult mixed paper can produce a lower overall score even while one repaired skill improves, so inspect the pattern before rejecting the plan. If the same mistake persists, ask a teacher to watch your reasoning and identify the first incorrect decision. Change the practice method based on that feedback rather than only increasing its duration.