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Questions  

If x longitudinal strain is produced in a wire of Young's modulus Y, then energy stored in the material of the wire per unit volume is

a
Yx2
b
2 Yx2
c
12Y2x
d
12Yx2

detailed solution

Correct option is D

Energy stored per unit volume =12×Stress×Strain=12×Young's modulus ×(Strain)2=12×Y×x2

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