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A progressive wave travelling along the ...

A progressive wave travelling along the positive x-direction is represented by `y(x, t)=Asin (kx-omegat+phi)`. Its snapshot at `t = 0` is given in the figure.
For this wave, the phase is:

A

`-(pi)/(2)`

B

`(pi)/(2)`

C

`pi`

D

`0`

Text Solution

Verified by Experts

The correct Answer is:
C
`y = A sin(kx - omega t + phi ), V_(p) = A omega cos (kx - omega + phi)`
At `t=0 , x = 0, V_(p) = -A omega cos phi `
By diagram `V_(P) = +ve , cos phi = - ve , phi = pi`
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