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The displacement of partcles in a string...

The displacement of partcles in a string streched in the x-direction is by `y`. Among the following expressions for `y`, those describing wave motion are :

A

`coskxsinomegat`

B

`cos(kx+omegat)`

C

`k^(2)x^(2)-omega^(2)t^(2)`

D

`cos(k^(2)x^(2)-omega^(2)t^(2))`

Text Solution

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The correct Answer is:
D
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