Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-numerical-Easy-Class 11
What is the elastic potential energy per unit volume of a wire when the stress and strain are known to be 5 × 10^7 N/m² and 0.002 respectively?
A
50 J/m³
B
25 J/m³
C
5 J/m³
D
500 J/m³
Correct Answer
Option B
Detailed Explanation
Using the formula for elastic potential energy per unit volume, u = 1/2 × stress × strain. Substituting the given values, u = 0.5 × 5 × 10^7 × 0.002 = 25 J/m³.
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