Physics (AS & A Level) · Oct / Nov 2025 · Paper 13 · Question 29

The diagram shows a stationary wave on a stretched spring at an instant in time. [diagram of stationary wave with points P and Q labelled] Two particles on the spring, P and Q, are shown. Which statement about the vibrations of P and Q is correct?

1. AThey have different frequencies.
2. BThey have the same amplitudes.
3. CThey have different periods.
4. DThey are always in phase.

As printed in the paper