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Physics (AS & A Level) · Feb / March 2025 · Paper 12 · Question 25

9702Progressive waves

A progressive wave of frequency 300 Hz is travelling with a speed of 600 m s–1. What is the phase difference between two points on the wave that are a distance of 0.50 m apart?

  1. A45°
  2. B90°
  3. C180°
  4. D360°

As printed in the paper

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Correct answer: B. 90°

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