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A sound wave y = A sin (omega t- kx) is ...

A sound wave `y = A sin (omega t- kx)` is propagating through a medium of density `'rho'`. Then the sound energy per unit volume is

A

`1//2 rho omega^(2) A^(2)`

B

`rho A^(2) omega^(2)`

C

`2rho A^(2) omega^(2)`

D

`4 rho A^(2) omega^(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
The energy desnity given by,
`u = (E)/(v) = (1)/(2) (rho V omega^(2) A^(2))/(V) = (1)/(2) rho omega^(2) A^(2)`
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