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Question 30825
JEE Physics · Medium

Elasticity, Thermal Expansion, Calorimetry and Heat Transfer: Thermal Stress MCQ

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Thermal StressMediumQuestion 30825

Question

A rod is clamped between rigid walls and heated by ΔT. Thermal stress developed is:
  1. A
    αΔT
  2. B
    YαΔT
    Correct
  3. C
    α/(YΔT)
  4. D
    Y/αΔT

Correct answer

YαΔT

Explanation

Thermal strain = αΔT. Since it cannot expand, stress = Y × strain = YαΔT.

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