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Physics (AS & A Level) · Feb / March 2017 · Paper 12 · Question 22

9702Progressive waves

What is the relationship between the amplitude of a wave and its intensity?

  1. Aamplitude ∝ intensity
  2. Bamplitude ∝ (intensity)²
  3. Camplitude ∝ √intensity
  4. D(amplitude)² ∝ √intensity

As printed in the paper

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Correct answer: C. amplitude ∝ √intensity

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