Civil Engineering > GATE 2017 SET-1 > Strength of Materials
An elastic bar of length L. uniform cross sectional area A, coefficient of thermal expansion α and Young's modulus E is fixed at the two ends. The temperature of the bar is increased by T, resulting in an axial stress σ. Keeping all other parameters unchanged, if the length of the bar is doubled, the axial stress would be
Correct : a
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