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Physics (AS & A Level) · May / June 2020 · Paper 11 · Question 28

9702Diffraction

Which statement must be true for diffraction to occur when a wave passes through a gap?

  1. AThe wave is able to travel in a vacuum.
  2. BThe wave is progressive.
  3. CThe wave has a large amplitude.
  4. DThe wave has a long wavelength.

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Correct answer: B. The wave is progressive.

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