A metal rod of Young’s modulus Y and coefficient of thermal expansion α is held at its two ends such that its length remains invariant. If its temperature is raised by tºC, the linear stress developed in its is:
A
B
Yαt
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
= α. 
T
and Y = 
So, F = AY αt
Thermal stress 
= Yα t.
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