engineering recuitment TSPSC AEE Civil Mock Test 2022 Strength of Materials Simple Stress and Strain Thermal Stress and Strain
A metal bar of length 100 mm is inserted between two rigid supports and its temperature is increased by 10° C. If the coefficient of thermal expansion is 12 × 10-6 per ° C and Young's modulus is 2 × 105 MPa, the stress in the bar is
1
zero
2
12 MPa
3
24 MPa
4
2400 MPa