Two slabs A and B of eqal surface area are placed one over the other such that their surfaces are completely in contact. The thicknness of slab A is twice tthat of B. The coefficient of thermal conductivity of slab A is twice that of B. The first suface of slab A is maintained at 100^(0)C, while the second surface of slab B is maintained at 25^(0)C. The temperature at the contact of their surfaces is

Two slabs A and B of eqal surface area are placed one over the other s

1.	Two slabs A and B of eqal surface area are placed one over the other such that their surfaces are completely in contact. The thicknness of slab A is twice tthat of B. The coefficient of thermal conductivity of slab A is twice that of B. The first suface of slab A is maintained at 100^(0)C, while the second surface of slab B is maintained at 25^(0)C. The temperature at the contact of their surfaces is
Answer» `62.5^(0)C` `45^(0)C` `55^(0)C` `85^(0)C` Answer :C