Physics (AS & A Level) · Oct / Nov 2023 · Paper 13 · Question 21

A wave travels on the surface of water. P, Q, R and S are four particles of water on the surface. The diagram shows the positions of the particles at one instant. The direction of travel of the wave is from left to right. Which two particles are about to move upwards?

1. AP and R
2. BP and S
3. CR and S
4. DQ and S

As printed in the paper