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 [NEET 2017]
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
In parallel arrangement of 
rods
Equivalent thermal conductivity is given by
If rods are of same area, then
Equivalent thermal conductivity of the system of two rods
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