Multiple choice

Consider the following statements:

(1) With rise in temperature, the speed of sound decreases. (2) The speed of sound is greater in liquids than in solids. (3) Supersonic jet planes travel faster than the speed of sound.

Which of the given statements is/are incorrect?

  1. Only (1)

  2. Only (2)

  3. Only (1) and (2)

  4. Only (2) and (3)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  1. Statement (1) is wrong. The speed of sound increases with an increase in temperature due to an increase in average molecular velocity. 2. Statement (2) is wrong. The speed of sound is greater in solid than in liquids because the solids have higher density. 3. Statement (3) is correct. The jet planes that travel faster than the speed of sound is known as supersonic jet planes.

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