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A transverse wave is tranvelling in a st...

A transverse wave is tranvelling in a string at any moment a small element 'dx' is at inclination `30^@` with the direction of propagation of the wave. After some time interval its inclination changes to `60^@` with direction of propagation. Potential energy of this small element is initially `U_0` and finally it is `KU_0`, value of K is

A

2

B

9

C

3

D

4

Text Solution

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The correct Answer is:
B
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