Two slabs `A` and `B` of equal surface area are placed one over the other such that their surfaces are completely in contact. The thickness of slab `A` is twice that of `B`. The coefficient of thermal conductivity of slab `B` is maintained at `25^(@)C`. The temperature at the contact of their surface is

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

Two slabs A and B of equal surface area are placed one over the other such that their surfaces are completely in contact The thickness and coefficient of thermal conductivities of slab A is twice that B The first surface of slab A is maintained at 100^(@) C while the second surface of slab B is maintained at 25^(@)C The temperature at the contact of their surfaces is .

Two plates of same area are placed in contact. Their thickness as well as thermal conductivities are in the ratio 2:3 . The outer surface of one plate is maintained at 10^(@) C and that of the other at 0^(@) C. What is the temperature at the common surface?

Two plates of same area are placed in contact. Their thickness as well as thermal conductivities are in the ratio 2:3 . The outer surface of one plate is maintained at 10^(@) C and that of the other at 0^(@) C. What is the temperature at the common surface?

Two blocks A and B of the same mass and surface finish are sliding on the same surface. Area of contact of A is twice that of the B. The frictional force between A and the surface is

Two blocks A and B of the same mass and surface finish are sliding on the same surface. Area of contact of A is twice that of the B. The frictional force between A and the surface is

Two plates of equal areas are placed in contact with each other . Their thickness are 2 cm and 3 cm respectively. Temperature of the external surface of the first plate is -25^(@)C and that of the external surface of the second plate is 25^(@)C What will be temperature of contact surface if the plates:- (i) Are of same material (ii) Have thermal conductivity in ratio 2:3 .