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Physics · Oct / Nov 2021 · Paper 12 · Question 21

5054General properties of waves

The diagram shows one wavefront of a wave as it travels from deep water to shallow water in a ripple tank. What happens as the wavefront moves into the shallow water?

  1. AThe speed of the wavefront increases.
  2. BThe speed of the wavefront decreases.
  3. CThe wavelength of the wave remains constant.
  4. DThe wavelength of the wave increases.

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Correct answer: B. The speed of the wavefront decreases.

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