Cambridge International AS & A Level Physics Revision
Explore Cambridge International AS & A Level Physics revision topics. This qualification is not a GCSE; the existing guide address and saved checklist are retained. Check the official specification for complete requirements.
Qualification code: 9702
Course details
Assessment For assessment details, see the official specification.
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Reviewed course guidance
Revision points, with the explanation beside them
Open a point to read what to know, how to use it in an assessment, a plain-language explanation and a self-check. Answers stay hidden until you choose to reveal them.
Options and source
Cambridge International assessment route
- AS only: Papers 1, 2, 3
- Staged A level: AS Papers 1–3, then A level Papers 4–5
- Linear A level: Papers 1–5 in one series
Syllabus overview: AS-only, staged and linear assessment routes
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There are no fully covered explanations for these selections yet. Partial support may still appear below. Use the official specification and your teacher’s guidance.
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Topic group
Reviewed requirements
- Core
Open revision guidance
What to know
- For a derived quantity formed by adding or subtracting measurements, add their absolute uncertainties in the simple worst-case method. For a product or quotient, add percentage uncertainties. Convert a derived quantity’s percentage uncertainty to an absolute uncertainty by multiplying by its value.
- State the result at precision consistent with the measurements.
What to do in an assessment
- For each input, calculate absolute uncertainty ÷ measured value × 100%. Add input percentages for a product, then convert to an absolute uncertainty. For a sum or difference, add the absolute uncertainties directly.
In plain language
When measured quantities are multiplied, their relative percentage uncertainties add in the simple method required here.
Self-check
A = 2.00 ± 0.01 cm and B = 3.00 ± 0.02 cm. Estimate area AB and its uncertainty.
Show the answer
Area=6.00 cm². Percentage uncertainty=(0.01/2.00×100)+(0.02/3.00×100)=0.50%+0.67%=1.17%, so absolute uncertainty≈6.00×0.0117=0.07 cm². Report about 6.00±0.07 cm².
Earlier topic checklist
These earlier topic ticks are separate from the reviewed points above and do not count towards that progress.
Physics topic list
Tick each item off as you revise. Ticks are saved on this device only.
These ticks keep your earlier topic checklist. They do not count towards the new reviewed requirements above. Its numbering may be internal; use the linked references above for the exact reviewed source requirements.
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