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A progressive wave is represented by y =...

A progressive wave is represented by `y = 12 sin (5t - 4x)` cm. On this wave, how far away are the two points having phase difference of `90^circ` ?

A

`(pi)/(2)cm`

B

`(pi)/(4)cm`

C

`(pi)/(8)cm`

D

`(pi)/(16)cm`

Text Solution

Verified by Experts

The correct Answer is:
C
`y=12sin(5t+4x),theta=(pi)/(2)rad,x=?`
`delta=(2pi)/(lamda):.x=(deltalamda)/(2pi)=((pi)/(2))/(4)`
`=(pi)/(8)cm`.
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