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Physics (AS & A Level) · May / June 2017 · Paper 11 · Question 22

9702Progressive waves

A longitudinal wave travels through a long spring. The spring is shown at one instant. What is the wavelength of the wave? [diagram: spring with arrows A, B, C and D indicating different lengths]

  1. AA
  2. BB
  3. CC
  4. DD

As printed in the paper

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Correct answer: B. B

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