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The extension in a string obeying Hooke'...

The extension in a string obeying Hooke's law is x. The speed of sound in the stretched string is `v`. If the extension in the string is increased to `1.5 x`, the speed of sound will be

A

`1.22v`

B

`0.61v`

C

`1.5v`

D

`0.75 v`

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The correct Answer is:
A
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