If the bulk modulus of water is 2100 M Pa, what is the speed of sound in water ?

Options

A. `1450ms^(-1)`
B. `2100ms^(-1)`
C. `0.21ms^(-1)`
D. `21ms^(-1)`

Answer

C

Explanation

Speed of sound in water is `v=sqrt((B)/(rho))`
where B is the bulk modulus and `rho` is the density of water.
Here, `B=2100MPa=2100xx10^(6)Pa,rho=10^(3)kgm^(-3)`
`therefore v=sqrt((2100xx10^(6))/(10^(3)))=1450ms^(-1)`