A composite wall of area A is made of equal thickness of lead and iron having thermal conductivities K and 2K, respectively. The temperature on the two sides of the composite wall are `100^(@)C` and `0^(@)C` with the layer on the hotter side. Calculate the steady -state temperature of the lead-iron interface.

A wall consists of two layer, one of thickness 3 cm and other of 6 cm. the thermal conductivities of the materials of these layers are K and 3K respectively. The temperature of the outer surfaces of the two layers are -5^(@)C and 20^(@)C respectively. determine the temperature of the surface of contact of the two layers in the steady state.

If the temperature difference on the two sides of a wall increases from 100^@C to 200^@C , its thermal conductivity

If the temperature difference on the two sides of a wall increases from 100^@C to 200^@C , its thermal conductivity

If temperature difference on the two sides of a wall increases from 10^@C to 20^@ C , its thermal conductivity

Three rods of the same dimension have thermal conductivity 3K, 2K and K as shown in the figure. The temperature of the junction in steady-state is

Three cylindrical rods A, B and C of equal lengths and equal diameters are joined in series as shown if Fig. Their thermal conductivities are 2K, K and 0.5K, respectively. In steady state, if the free ends of rods A and C are at 100^@C and 0^@C , respectively, calculate the temperature at the two junction points. Assume negligible loss by radiaiotn through the curved surface. What will be the equivalent thermal conductivity?

Three cylindrical rods A, B and C of equal lengths and equal diameters are joined in series as shown if Fig. Their thermal conductivities are 2K, K and 0.5K, respectively. In steady state, if the free ends of rods A and C are at 100^@C and 0^@C , respectively, calculate the temperature at the two junction points. Assume negligible loss by radiaiotn through the curved surface. What will be the equivalent thermal conductivity?

Two walls of thickness d and d and thermal conductivities k and k are in contact. In the steady state, if the temperature at the outer T_(1) and T_(2) , the temperature at the common wall is

The outer faces of a rectangular slab made of equal thickness of iron and brass are maintained at 100^(@)C and 0^(@)C respectively. The temperature at the interface is (Thermal conductivity of iron and brass are 0.2 and 0.3 respectively)