Physics-Stress & Strain
NEET Physics Stress & Strain MCQ Question
Type: MCQ-fact-Hard-Class 11
What is the expression for elastic potential energy per unit volume of a wire under tensile stress?
A
u = 1/2 × σ × ε
B
u = σ × ε
C
u = 1/2 × (σ + ε)
D
u = σ/ε
Correct Answer
Option A
Detailed Explanation
The elastic potential energy per unit volume of the wire is given by the formula u = 1/2 × σ × ε, as stated in the NCERT context.
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