A-LevelPhysicsWaves9702/12 · May/June 2021 · Q271 Mark
Which diagram best shows how water waves diffract when they pass through a gap in a barrier?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
ADiagram A showing plane waves encountering a gap, with minimal diffraction
BDiagram B showing plane waves encountering a gap, with significant diffraction into circular waves
CDiagram C showing circular waves encountering a gap, continuing as circular waves
DDiagram D showing plane waves encountering a gap, continuing as plane waves
✓ Correct answer
B: Diagram B showing plane waves encountering a gap, with significant diffraction into circular waves
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