A composite slab has two layers of different materials having thermal conductivities k ad 2k. If each layer has the same thickness, the equivalent thermal conductivity of the slab is

A composite slab has two layers of different materials having thermal

1.	A composite slab has two layers of different materials having thermal conductivities k ad 2k. If each layer has the same thickness, the equivalent thermal conductivity of the slab is
A.	3k
B.	\(\frac{k}{2}\)
C.	\(\frac{3}{2k}\)
D.	\(\frac{4k}{3}\)
Answer» E.

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A composite slab has two layers of different materials having thermal conductivities k ad 2k. If each layer has the same thickness, the equivalent thermal conductivity of the slab is

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