Physics (AS & A Level) · Oct / Nov 2018 · Paper 13 · Question 26
9702Stationary waves
The diagram shows a stationary wave on a string. The stationary wave has three nodes N₁, N₂ and N₃. Which statement is correct?
- AAll points on the string vibrate in phase.
- BAll points on the string vibrate with the same amplitude.
- CPoints equidistant from N₂ vibrate with the same frequency and in phase.
- DPoints equidistant from N₂ vibrate with the same frequency and the same amplitude.
As printed in the paper
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Correct answer: D. Points equidistant from N₂ vibrate with the same frequency and the same amplitude.
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