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Question 30809
JEE Physics · Medium

Elasticity, Thermal Expansion, Calorimetry and Heat Transfer: Energy in Elasticity MCQ

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Energy in ElasticityMediumQuestion 30809

Question

Energy stored per unit volume in a stretched wire is:
  1. A
    Stress × Strain
  2. B
    ½ × Stress × Strain
    Correct
  3. C
    Stress² / Y
  4. D
    Y × Strain

Correct answer

½ × Stress × Strain

Explanation

Elastic potential energy per unit volume = ½ × stress × strain = ½Y(strain)².

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