Physics (AS & A Level) · Oct / Nov 2021 · Paper 11 · Question 26

A string is fixed between point P and an oscillator M. Another string is fixed between M and point Q. M is midway between P and Q. The frequency of the oscillator is adjusted until a stationary wave is formed on both strings. The speed of the wave between P and M is twice the speed of the wave between M and Q. Which diagram could represent the stationary wave pattern?

1. ADiagram A
2. BDiagram B
3. CDiagram C
4. DDiagram D

As printed in the paper