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The equation of a stationary wave is y=2...

The equation of a stationary wave is `y=2A sin((2pict)/lambda) cos ((2pix)/lambda)`
Which of the following is correct?

A

Unit of ct is same as that of `lambda`

B

Unit of x is same as that of `lambda`

C

Unit of `(2pic)/lambda` is same as that of `(2pix)/(lambdat)`

D

Unit of `c/lambda` is same as that of `x/lambda`

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The correct Answer is:
1,2,3
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