A metal bar of length L and area of cross-section A is clamped between two rigid supports. For the material of the rod, its Young’s modulus is Y and coefficient of linear expansion is 
. If the temperature of the rod is increased by 
the force exerted by the rod on the supports is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Young? s elasticity coefficient 
According to definition of linear expansion coefficient 
where,
initial length 
or 
where,
force applied on wire
area of cross-section of wire
increase in temperature of wire.
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