Find the frequency of minimum distance between compression & rarefaction of a wire. If the length of the wire is 1 m & velocity of sound in air is 360 m/s

Options

A. `90sec^(-1)`
B. `180sec^(-1)`
C. `120sec^(-1)`
D. `360sec^(-1)`

Answer

B

Explanation

As `(lambda)/(2)=limplieslambda=2l`
`f=(v)/(2l)=(360)/(2)=180sec^(-1)