A-LevelPhysicsSuperpositionMay/June 2018Paper 1 Q241 Mark

A string is fixed at one end and the other end is attached to a vibrator. The frequency of the vibrator is slowly increased from zero. A series of stationary waves is formed. Assume that for a stationary wave there is a node at point P. [Diagram] What are the first five wavelengths of the stationary waves that could be formed?

Q: What is the correct answer to this A-Level Physics question?

The correct answer is A: 2L/1, 2L/2, 2L/3, 2L/4, 2L/5.

Q: What topic does this question test?

This question tests Superposition in A-Level Physics (syllabus code 9702). It is worth 1 mark.

A2L/1, 2L/2, 2L/3, 2L/4, 2L/5

B2L/2, 2L/3, 2L/4, 2L/5, 2L/6

C4L/1, 4L/2, 4L/3, 4L/4, 4L/5

D4L/1, 4L/3, 4L/5, 4L/7, 4L/9

✓ Correct Answer

The correct answer is A: 2L/1, 2L/2, 2L/3, 2L/4, 2L/5

📋 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 multiple-choice question tests Superposition in A-Level Physics (syllabus code 9702). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Physics May/June 2018 examination, Paper 1 Variant 2.

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