Two uniform metal rods of lengths 
and 
and coefficients of linear expansion 
and 
, respectively are connected to form a single rod of length ( 
). When the temperature of the combined rod is raised by 
, the length of each rod increases by the same amount. Then 
is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Initial length of 
Initial length of 
Linear coefficient of 
Linear coefficient of rod 
If temperature of combined rod increased by 
, then increase in length of rod A is given by
Increase in length of II rod is given by
and 
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