A-LevelPhysicsWavesMay/June 2022Paper 1 Q281 Mark
A bar vibrates with frequency f to produce water waves in a ripple tank. [Figure 28.1] The waves pass through a gap of width x in a barrier so that diffraction occurs. Which combination of vibration frequency and gap width will produce the smallest angle of diffraction?
Avibration frequency: f/2, gap width: x/2
Bvibration frequency: f/2, gap width: 2x
Cvibration frequency: 2f, gap width: x/2
Dvibration frequency: 2f, gap width: 2x
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of waves within the Physicssyllabus. The examiner's mark scheme requires...
📋 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...
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