The work done in stretching an elastic wire per unit volume is
A$Stress$ $ \times $ $Strain$
B$\frac{1}{2} \times $$Stress$ $ \times $$Strain$
C$2 \times {\rm{strain}} \times {\rm{stress}}$
D$Stress$$/$$Strain$
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B$\frac{1}{2} \times $$Stress$ $ \times $$Strain$
b (b) Factual question. $u=\frac{1}{2}$ stress $\times$ strain
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