📝 OCR A Physics Paper 3 prep guide — last-minute revision, hints & synoptic topics

OCR A Level Physics revision, practice and AI feedback built by teachers

PhysicsUK helps A Level Physics pupils revise OCR A topics, practise exam-style questions, receive instant feedback, and strengthen written explanations.

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AS · Kinematics (M3.1.1)

In a lab, a motion sensor records a trolley that starts from rest, speeds up uniformly to 2.4 m/s in 2.0 s, then immediately slows uniformly to rest taking 4.0 s. The velocity–time graph is a straight-line rise followed by a straight-line fall back to zero. Which statement must be true?

A2 · Medical imaging I: X-rays — attenuation & HVT (M6.2)

In a quality-control test of an X-ray beam at fixed kVp, two 8.0 mm-thick inserts are compared. For this beam, material A has a half-value thickness (HVT) of 2.0 mm and material B has an HVT of 4.0 mm. Which statement must be true about the transmitted X-ray fraction through the inserts?

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