A transverse wave is propagating along a...

A transverse wave is propagating along a string of length l. when string elongated by l/20 cm, velocity of wave is v. what will be its velocity when it is elongatd by l/10 ?

`2sqrt(2)v`

`sqrt(2)v`

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The correct Answer is:

`V_2/V_1 = sqrt(x_2/x_1) = sqrt(l/10xx20/l)`
`V_2 = sqrt2 V` .

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