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y= a cos (kx + omega t) superimposes on ...

`y= a cos (kx + omega t)` superimposes on another wave giving a stationary wave having node at x = 0. What is the equation of the other wave

A

`-a cos (kx+ omega t)`

B

`a cos (kx - omega t)`

C

`-a cos (kx- omega t)`

D

`-a sin (kx + omega t)`

Text Solution

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The correct Answer is:
C
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