Physics (AS & A Level) · May / June 2018 · Paper 11 · Question 20

A transverse progressive wave is set up on a string. The graph shows the variation with time of displacement for a point on this string. [graph of displacement against time showing a wave with points X and Y marked at equal displacement] The separation XY on the graph represents the ......1...... of the wave. X and Y have equal ......2...... . Which words correctly complete gaps 1 and 2?

1. Atime period amplitudes
2. Btime period displacements
3. Cwavelength amplitudes
4. Dwavelength displacements

As printed in the paper