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Physics (AS & A Level) · Oct / Nov 2025 · Paper 12 · Question 26

9702Progressive waves

The graph shows the variation of displacement with distance for two progressive waves X and Y of the same type in the same medium. The intensity of wave X is I. What is the intensity of wave Y?

  1. A0.28I
  2. B0.53I
  3. C1.9I
  4. D3.5I

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Correct answer: D. 3.5I

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