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Physics (AS & A Level) · Feb / March 2023 · Paper 12 · Question 28

9702Interference

Waves are emitted from two coherent sources. Which statement about the waves must be correct?

  1. AThey are in phase.
  2. BThey are transverse waves.
  3. CThey have a constant phase difference.
  4. DThey have the same amplitude.

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Correct answer: C. They have a constant phase difference.

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