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Q: What is the effect of pressure on the speed of sound?
  • A. The speed of sound increases with increase in pressure and vice versa.
  • B. The speed of sound decreases with increase in pressure and vice versa.
  • C. The speed of sound is not affected by pressure.
  • D. First the speed of sound increases with increase in pressure then starts decreasing though the pressure increases.
Correct Answer: Option C - Atmospheric pressure has no effect on sound speed. The speed of sound increase with increase in temperature. If the temperature of the medium increase for 1⁰C then the velocity of sound increase with 0.61 m/sec in that medium.
C. Atmospheric pressure has no effect on sound speed. The speed of sound increase with increase in temperature. If the temperature of the medium increase for 1⁰C then the velocity of sound increase with 0.61 m/sec in that medium.

Explanations:

Atmospheric pressure has no effect on sound speed. The speed of sound increase with increase in temperature. If the temperature of the medium increase for 1⁰C then the velocity of sound increase with 0.61 m/sec in that medium.