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Physics (AS & A Level) · May / June 2019 · Paper 11 · Question 27

9702Stationary waves

Two progressive waves of frequency 300 Hz superpose to produce a stationary wave in which adjacent nodes are 1.5 m apart. What is the speed of the progressive waves?

  1. A100 m s–1
  2. B200 m s–1
  3. C450 m s–1
  4. D900 m s–1

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Correct answer: D. 900 m s–1

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