Three identical rods A, B and C are placed end to end. A temperature difference is maintained between the free ends of 
and 
. The thermal conductivity of 
is thrice of that of C and half of that of A. The effective thermal conductivity of the system will be ( 
is the thermal conductivity of 
.
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
A | B | C |
Given, 
And 
Rods are in series form, so
Or 
or 
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