Published by:
CGP EDU Academic Team
Published on: August 13, 2026
A steel wire of length 
and cross-sectional area 
is fixed at one end from the roof. A mass 
is hung from the other end. If the wire is heated by 
, what is the net change in its length? (The coefficient of linear expansion for steel is 
, its Young's modulus is 
and 
acceleration due to gravity.)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
The change in length due to thermal expansion, 
, is
The change in length due to the applied load, 
, is
Net change in length 
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