Q 1159123014.     A wire of length `L` and cross-sectional area `A` is made of a material having Young’s modulus `Y`. If the wire is stretched by an amount `x`, find the work done on the wire.


JEE 1987
A

`((2YA)/L)x^2`

B

`((YL)/(2A))x^2`

C

`((LA)/Y)x^2`

D

`((YA)/(2L))x^2`

HINT

Work done, `W =` change in potential energy

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