Physics (AS & A Level) · May / June 2025 · Paper 13 · Question 24

The graph shows the variation with distance along the wave of the displacement of water particles at a particular instant in time for a transverse water wave. [graph of displacement/m against distance/m, showing a sinusoidal wave with points P, Q and R marked] P, Q and R show the positions of three water particles in the wave. Which particle has the greatest speed at the instant shown?

1. Aall have the same speed
2. Bparticle P
3. Cparticle Q
4. Dparticle R

As printed in the paper