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A simple harmonic wave has the equation ...

A simple harmonic wave has the equation `y_1 = 0.3 sin (314 t - 1.57 x)` and another wave has equation `y_2= 0.1 sin (314t - 1.57x+1.57)` where `x,y_1` and `y_2` are in metre and t is in second.

A

`v_(1)=v_(2) = 50 Hz`

B

`lambda_(1) = lambda_(2) = 4m`

C

Ratio of intensity is 9

D

`y_(2)` leads `y_(1)` by a phase angle of `pi/2`.

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A, B, C, D
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