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A wave is represented by the equation y ...

A wave is represented by the equation `y = a sin(kx + omega t)` is superimposed with another wave to form a stationary wave such that the point x = 0 is a node. Then the equation of other wave is :-

A

` y = a sin (kx +omega t)`

B

`y=-a cos (kx+omega t)`

C

`y=-a cos (kx -omega t)`

D

`y=-a sin (kx - omega t)`

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The correct Answer is:
B
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