A-LevelPhysicsWavesMay/June 2023Paper 1 Q271 Mark
A continuous progressive water wave in a ripple tank passes through a gap in a barrier and diffracts. The width of the gap is greater than the wavelength of the wave. Which change causes the wave to spread over a larger angle as it passes through the gap?
Asmall decrease in the wavelength of the wave
Bsmall decrease in the width of the gap
Csmall increase in the frequency of the wave
Dsmall increase in the height of the barrier
✓ Correct Answer
The correct answer is B. 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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