question_answer

A wire of length L and cross-sectional area A is made of a material of Young's modulus Y. It is stretched by an amount x. The work done is                 [MP PET 1996; BVP 2003; UPSEAT 2001]

A)                 \[\frac{YxA}{2L}\]

B)                 \[\frac{Y{{x}^{2}}A}{L}\]

C)                 \[\frac{Y{{x}^{2}}A}{2L}\]             

D)                 \[\frac{2Y{{x}^{2}}A}{L}\]