and 
are the three identical conductors but made from different materials. They are kept in contact as shown. Their thermal conductivities are 
and 
. The free end of 
is at 
and the free end of 
is at 
. During steady state, the temperature of the junction of 
and 
is nearly ... 
.
Text Solution
Verified by ExpertsThe correct answer is:
A
Here, 
Let 
be the length and 
be area of cross-section of each conductor respectively. Let 
and 
be temperature of 
and 
junctions respectively.
At the steady state, 
or 
and 
(Using (i))
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