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A slab consists of two parallel layers o...

A slab consists of two parallel layers of two different materials of same thickness having thermal conductivities `K_(1)` and `K_(2)`, the equivalent conductivity of the combination is :

A

`k_(1)+k_(2)`

B

`(2k_(1)k_(2))/(k_(1)+k_(2))`

C

`(k_(1)+k_(2))/(2)`

D

`(k_(1)+k_(2))/(2k_(1)k_(2))`

Text Solution

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The correct Answer is:
B
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