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Physics (AS & A Level) · Oct / Nov 2019 · Paper 12 · Question 26

9702Progressive waves

Which statement about a light wave and a sound wave is correct?

  1. ABoth can travel through free space.
  2. BBoth have a frequency inversely proportional to their wavelength.
  3. CBoth have an intensity proportional to their amplitude.
  4. DBoth have oscillations perpendicular to the direction of energy transfer.

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Correct answer: B. Both have a frequency inversely proportional to their wavelength.

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