Physics-Elastic Behavior

NEET Physics Elastic Behavior MCQ Question

Type: MCQ-numerical-Medium-Class 11

Which of the following expressions correctly represents the elastic potential energy stored per unit volume in a wire when it is subjected to tensile stress σ\sigma and strain ε\varepsilon?

A

0.5 * σ\sigma * ε\varepsilon

B

σ\sigma * ε\varepsilon

C

0.5 * σ\sigma / ε\varepsilon

D

σ\sigma / ε\varepsilon

Correct Answer

Option A

Detailed Explanation

The elastic potential energy per unit volume uu is given by u=12×σ×εu = \frac{1}{2} \times \sigma \times \varepsilon as per the stress-strain relationship.

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