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Physics · May / June 2019 · Paper 12 · Question 30

5054Sound

The speed of sound in air is c_a, the speed of sound in water is c_w and the speed of sound in ice is c_i. Which relationship is correct?

  1. Ac_a > c_i
  2. Bc_a > c_w
  3. Cc_i > c_w
  4. Dc_w = c_a

As printed in the paper

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Correct answer: C. c_i > c_w

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