Physics (AS & A Level) · Oct / Nov 2018 · Paper 12 · Question 22

A progressive wave on a wire has a frequency of 10 Hz. Two points on the wire, separated by a distance of 0.25 m, have a phase difference of 22.5°. What is the maximum speed of the wave?

1. A2.5 m s⁻¹
2. B10 m s⁻¹
3. C20 m s⁻¹
4. D40 m s⁻¹

As printed in the paper