O-LevelPhysicsWaves5054/12 · May/June 2025 · Q181 Mark
The graph shows, at one instant, the pressure variation along a sound wave. [Figure 18.1 - Graph of pressure vs distance for a sound wave] Which point on the diagram represents a rarefaction and what is the wavelength of the sound wave?
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.
AP, X
BP, Y
CQ, X
DQ, Y
✓ Correct answer
C: Q, X
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