The speed of sound through a gas is measured as 340 m/s at pressure P1 and temperature T1. What will be the speed of sound if the pressure of a gas is doubled but the temperature is kept constant?
Correct answer: B. 340 m/s
- A. 342 m/s
- B. 340 m/s
- C. 170 m/s
- D. 680 m/s
Explanation
According to laplace equation v=√(γP/p), the pressure and velocity are directly related however if the pressure is doubled then density would also double naturally, so the speed of sound would remain the same.
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