Question

Which of the following statements are correct?
A. Changes inair temperature have no effect on the speed of sound.
B. Changes in air pressure have no effect on the speed of sound.
C. The speed of sound in water is higher that in air.
D. The speed of sound in water is lower than in air.

Answer 1

Correct Answer - B::C
`v=sqrt((gammaRT)/(M))`
Change in temperature affects the velocity of sound is air but as long as temperature remains same change in pressure has no effect.
`v=sqrt((B)/(P))`
Bulk modulus of water is very high, so velocity of sound in water is higher than that in air.