A slab consists of two parallel layers of two different materials of same thickness having thermal conductivities k_(1) & k_(2). The equivalent conductivity of the combination is :

A slab consists of two parallel layers of two different materials of s

1.	A slab consists of two parallel layers of two different materials of same thickness having thermal conductivities k_(1) & k_(2). The equivalent conductivity of the combination is :
Answer» `k_(1)+k_(2)` `(2k_(1)k_(2))/(k_(1)+k_(2))` `(k_(1)+k_(2))/(2)` `(k_(1)+k_(2))/(2k_(1)k_(2))` ANSWER :B

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A slab consists of two parallel layers of two different materials of same thickness having thermal conductivities k_(1) & k_(2). The equivalent conductivity of the combination is :

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