Question

The Young's modulus of a wire is Y. If the energy per unit volume is E, then the strain will be

• A.
• B.
• C. EY
• D.

Answer 1

The correct option is A

Energy per unit volume =$\frac{1}{2}\times Y\times (strain{)}^2$
$\therefore strain=\sqrt{\frac{2E}{Y}}$