Two rods 
and 
of different materials are welded together as shown in figure. Their thermal conductivities are 
and 
. The thermal conductivity of the composite rod will be
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Since both rods are in parallel Combination
So, 
……………… (i)
Now 
Putting the values in (i) we get
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