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A wire fixed at the upper end stretches ...

A wire fixed at the upper end stretches by length l by applying a force F. The work done in stretching is

A

`F//2l`

B

`Fl`

C

`2Fl`

D

`Fl//2`

Text Solution

Verified by Experts

The correct Answer is:
D

work done `= (1)/(2) "stress" xx "strain" xx "volume"`
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