The velocity of sound in air at NTP is 330 m/s. What will be its value when temperature is doubled and pressure is halved ?

Options

A. `330 ms^(-1)`
B. `165 ms^(-1)`
C. `330sqrt(2) ms^(-1)`
D. `330/sqrt(2) ms^(-1)`

Answer

C

Explanation

As there is no effect of change in pressure on velocity of sound in air, and velocity `prop sqrt(T)`, therefore, when temperature is doubled, velocity becomes `330sqrt(2) ms^(-1)`