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JAMB Physics 2012 Question 28

Question 28

Sound

Which of the following factors will affect the velocity of sound?

  1. A.An increase in the pitch of the sound.
  2. B.An increase in the loudness of the sound.
  3. C.Wind travelling in the same direction of the sound
  4. D.A change in the atmospheric pressure constant temperature.
Show the answer and explanation

Answer: C (Wind travelling in the same direction of the sound)

Explanation

Wind carries the air along, so sound moving with the wind travels faster relative to the ground. Pitch, loudness and pressure (at constant temperature) do not change the speed.