A wall has two layers A and B, each made of a different material. Both the layers have the same thickness. The thermal conductivity of material of A is twice that of B. Under the thermal equilibrium the temperature difference across the wall is 30?C. The temperature drops in layers A and B will be respectively

A wall has two layers A and B, each made of a different material. Both

1.	A wall has two layers A and B, each made of a different material. Both the layers have the same thickness. The thermal conductivity of material of A is twice that of B. Under the thermal equilibrium the temperature difference across the wall is 30?C. The temperature drops in layers A and B will be respectively
A.	15?C and 15?C
B.	cannot be predicated
C.	37,500 kg
D.	10?C and 20?C
E.	20?C and 10?C
Answer» F.