state gov BSSC Laboratory Assistant Mock Test Series 2025 Physics Mechanical Properties of Solids Elastic moduli
Young's modulus of the material of a wire is Y. If it is under a stress S, the energy stored per unit volume is given by:
1
\(\dfrac{1}{2}\dfrac{S}{Y}\)
2
\(\dfrac{1}{2}\dfrac{S^2}{Y}\)
3
\(\dfrac{1}{2}\dfrac{S}{Y^2}\)
4
\(\dfrac{1}{2}\dfrac{S^2}{Y^2}\)