A metal rod of length L, cross-sectional area A, Young's modulus Y and coefficient of linear expansion 
is heated to 
. The work that can be performed by the rod when heated is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
: Work done by the rod on heating 
Energy stored in the rod
Here, length of rod 
, Young's modulus 
coefficient of linear expansion 
,
temperature increased 
Increase in length of rod, 
Also, 
So from eqn. (i), 
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