[" A wall has two layers "A" and "B" ,ea...

[" A wall has two layers "A" and "B" ,each made of different material.Both the layers have the same thickness."],[" The thermal conductivity for "A" is twice that of B.Under steady state,the temperature difference across "],[" the whole wall is "36^(@)C" .Then the temperature difference across the layer "A" is "],[[" (A) "6^(@)C," (B) "12^(@)C," (C) "18^(@)C," (D) "24^(@)C]]

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