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A circular rod of length L and area of crosssection A has a modulus of elasticity E and coefficient of thermal expansion α. One end of the rod is fixed and other end is free. If the temperature of the rod is increased by ∆T, then
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- stress developed in the rod is Eα∆T and strain developed in the rod is a ∆T
- both stress and strain developed in the rod are zero
- stress developed in the rod is zero and strain developed in the rod is α∆T
- stress developed in the rod is Eα∆T and strain developed in the rod is zero
Correct Option: C
Since one end of the rod is fixed and other is free to expand. Hence the temperature stresses is zero
| ε | = α∆T | L | L |
