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Physics (AS & A Level) · May / June 2017 · Paper 13 · Question 21

9702Progressive waves

Which statement about electromagnetic waves in a vacuum is correct?

  1. AAmplitude is inversely proportional to velocity.
  2. BFrequency is inversely proportional to wavelength.
  3. CIntensity is proportional to amplitude.
  4. DVelocity is proportional to wavelength.

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Correct answer: B. Frequency is inversely proportional to wavelength.

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