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A-LevelPhysicsSuperpositionMay/June 2019Paper 2 Q411 Marks

4 (a) For a progressive water wave, state what is meant by: (b) Two coherent waves X and Y meet at a point and superpose. The phase difference between the waves at the point is 180°. Wave X has an amplitude of 1.2cm and intensity I. Wave Y has an amplitude of 3.6cm.

Q: What topic does this question test?

This question tests Superposition in A-Level Physics (syllabus code 9702). It is worth 11 marks.

📋 Examiner Report & Trap Analysis

Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This A-Level Physics Question

Topic

This structured question tests Superposition in A-Level Physics (syllabus code 9702). It is worth 11 marks.

Source

This question appeared in the Cambridge A-Level Physics May/June 2019 examination, Paper 2 Variant 2.

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