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 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 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 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?

A compound slab is made with two different materials A and B with coefficient of thermal conductivity K_(A) = 2K_(B) and thickness x_(A) = (1)/(2) x_(B) . If the face of the A surface is at 100^(@)c and that of the B surface is at 25^(@)C the temperature of the common surface will be

Two parallel plates A and B are joined together to form a compound plate . The thicknesses of the plate are 4.0cm and 2.5cm respectively and the area of cross section is 100cm^(2) for each plate. The thermal conductivities are K_(A)=200Wm^(-1) ^(@)C^(-1) for the palte B. The outer surface of the plate A is maintainned at 100^(@)C and the outer surface of the plate A is maintained at 100^(@)C . and the outer surface of the plate B is maintained at 0^(@)C. Find (a) the rate of heat flow through any cross section, (b) the temperature at the interface and (c) the equivalent thermal conductivity of the compound plate.

Two bodies A and B having equal surface areas are maintained at temperatures 10^(@)C . And 20^(@)C . The thermal radiation emitted in a given time by A and B are in the ratio

Two bodies A and B having equal surface areas are maintained at temperatures 10^(@)C . And 20^(@)C . The thermal radiation emitted in a given time by A and B are in the ratio