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Physics (AS & A Level) · Oct / Nov 2023 · Paper 11 · Question 20

9702Progressive waves

Two waves pass through a point P. The graph shows the variation with time t of the displacement s of the two waves at point P. What is the phase difference between the two waves at point P?

  1. A0°
  2. B45°
  3. C90°
  4. D180°

As printed in the paper

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Correct answer: B. 45°

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