Question:
Which of the following statements related to stress-strain relation is correct
Which of the following statements related to stress-strain relation is correct
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Hooke’s law is valid only in elastic region, not beyond yield point.
Updated On: May 1, 2026
- Stress is linearly proportional to strain irrespective of the magnitude of the strain
- Stress is linearly proportional to strain above the yield point
- Stress is linearly proportional to strain for stress much smaller than at the yield point
- Stress-strain curve is same for all materials
- Stress is inversely proportional to strain
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The Correct Option is C
Solution and Explanation
Concept:
Hooke’s Law: \[ \text{Stress} \propto \text{Strain} \quad (\text{within elastic limit}) \]
Step 1: Elastic region.
Linear relation holds only for small stress.
Step 2: Beyond yield point.
Material shows plastic behavior $\Rightarrow$ no linearity.
Step 3: Conclusion.
\[ \text{Correct only for small stress values} \]
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