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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

`cos (kx) sin(omegat)`

B

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

C

`cos^(2)(kx + omegat)`

D

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

Text Solution

Verified by Experts

The correct Answer is:
A, C
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