A compound slab consists of two parallel plates of different material of same thickness and having thermal conductivities k 1 and k 2 . What is the equivalent thermal conductivity of the slab?
A
k 1 + k 2
B
k 1 k 2
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Now,
Adding 
Also, 
∴ ∴ 
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