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Physics (AS & A Level) · Oct / Nov 2020 · Paper 11 · Question 22

9702Progressive waves

The graph shows the variation with time of displacement for two different waves X and Y. Wave X has frequency f and amplitude A. What is the frequency and what is the amplitude of wave Y?

  1. Afrequency ½ f, amplitude ½ A
  2. Bfrequency ½ f, amplitude 2A
  3. Cfrequency 2f, amplitude ½ A
  4. Dfrequency 2f, amplitude 2A

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Correct answer: B. frequency ½ f, amplitude 2A

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