STANDARDPhysics-Elasticity
STANDARD Physics Elastic Potential Energy MCQ Question
Type: MCQ-conceptual-Medium
The elastic energy stored per unit volume in a stretched wire is
A
1 stress / 2 Y
B
1 (stress)² / 2 Y
C
1 (stress)² / 2 Y²
D
1 stress / 2 Y²
Correct Answer
Option B
Detailed Explanation
The elastic energy stored per unit volume is given by (1/2) × stress × strain. Since strain = stress/Y, the energy per unit volume becomes (1/2) × (stress)² / Y.
Found an issue with this question?