Physics · Oct / Nov 2017 · Paper 12 · Question 19

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. [diagram] Which statement is correct?

1. AAll particles on one line move in the same direction at the same time.
2. BThe direction of travel of the sound wave is parallel to the lines.
3. CThe distance between a compression and its adjacent rarefaction is a wavelength.
4. DThe pattern of lines represents a transverse wave.

As printed in the paper