O-LevelPhysicsWaves5054/12 · Oct/Nov 2017 · Q191 Mark
A sound wave in a solid is represented by a series of lines. The diagram shows compressions C and rarefactions R at one instant in time. Which statement is correct?
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.
AAll particles on one line move in the same direction at the same time.
BThe direction of travel of the sound wave is parallel to the lines.
CThe distance between a compression and its adjacent rarefaction is a wavelength.
DThe pattern of lines represents a transverse wave.
✓ Correct answer
A: All particles on one line move in the same direction at the same time.
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