1916Every Day ScienceMedium
Velocity of sound in air does not change with the change of?
AMoisture content in air
BPressure of air
CTemperature of air
DWind in the direction of propagation of sound
Correct answer
B. Pressure of air
Explanation
Air pressure has no effect at all in an ideal gas approximation. This is because pressure and density both contribute to sound velocity equally, and in an ideal gas the two effects cancel out, leaving only the effect of temperature.