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A wall has two layers A and B each made ...

A wall has two layers A and B each made of different materials. The thickness of both the layers is the same. The thermal conductivity of A, `K_(A) = 3K_(B)`. The temperature different across the wall is `20^(@)C` in thermal equilibrium

A

The temperature difference across A = `15^(@)C`

B

The temperature difference across A = `5^(@)C`

C

The temperature difference across A is `10^(@)C`

D

The rate pf transfer of heat through A is more than that through

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The correct Answer is:
B
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