A cylinder of radius 
of thermal conductivity 
is surrounded by a cylindrical shell of inner radius 
and outer radius 
made of thermal conductivity 
. The two ends of the whole system are maintained at two different temperatures 
and 
. The system is in steady state and there is no loss of heat across cylindrical surface. The electrical thermal conductivity of the system is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
At steady state, 
or 
or 
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