A slab consists of two parallel layers of different materials `4cm` and `2cm` thick and of thermal conductivities `54cals^(-1)m^(-1)K^(-1)` and `36cals^(-1)m^(-1)K^(-1)` respectively. If the faces of the slab are at `100^(@)C` and `0^(@)C` calculate the temperature of the surface dividing the two materials.

A slab consists of two parallel layers of iron and brass 10 cm and 10.9 cm thick and of thermal conductivities 500 "Wm"^(-1) "K"^(-1) and 109 "Wm"^(-1) "K"^(-1) respectively. The area of opposite faces are 2m^(2) each and are at temperatures 373 K and 273 K. Find heat conducted per second across the slab and also the temperature of the interface.

A slab consists of two parallel layers of two different materials of same thickness having thermal conductivities K_(1) and K_(2) . The equivalent conductivity of the combination is

A slab consists of two parallel layers of two different materials of same thickness having thermal conductivities K_1 and K_2 . The equivalent conductivity of the combination is

A slab consists of two parallel layers of two different-materials of the same thickness, having thermal conductivities K_1 and K_2 . What is the equivalent thermal conductivity of the slab?

A slab consists fo two parallel layer of different materials of same thickness and thermal conductivities K_1 and K_2 .The equivalent thermal conductivity off the slab is :

A slab consists of two layers of different materials of the same thickness and having thermal conductivities K_(1) and K_(2) . The equivalent thermal conductivity of the slab is

A slab consists of two layers of different materials of the same thickness and having thermal conductivities K_(1) and K_(2) . The equivalent thermal conductivity of the slab is

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