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Question

Physics Question on elastic moduli

When a body is strained, energy stored per unit volume is (Y-Young's modulus)

A

(stress)Y\frac{(stress)}{Y}

B

Y×(strain)2\frac{ Y\times (strain)}{2}

C

(stress)22Y\frac{(stress)^2}{2Y}

D

Y×(strain)2 Y\times (strain)^2

E

12(stress)Y\frac1{2} \frac{(stress)}{Y}

Answer

12(stress)Y\frac1{2} \frac{(stress)}{Y}

Explanation

Solution

The correct option is (E) : 12(stress)Y\frac1{2} \frac{(stress)}{Y}