The wall of a house consists of two layers with different thermal conductivity coefficients. The ternpera ture of the outer wall is `T_1` and that of the inuer wall is `T_2`. Temperature variations inside the wall are shown in the figure. What layer, the inner or the outer, has a higher thermal conductivity coefficient?

The wall of a house is made of two different materials of same thickness. The temperatures of the outer wall is T_(2) and that of inner wall is T_(1) lt T_(2) . The temperature variation inside the wall as shown in the figure. Then :

A composite slab consists of two parts of equal thickness. The thermal conductivity of one is twice that of the other. What will be the ratio of temperature difference across the two layers in the state of equilibrium ?

Two bar of identical dimensions are kept as shown in figure. If K_1 and K_2 are their coefficients of thermal conductivities, then equivalent K

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

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 rod of length l with thermally insulated lateral surface consists of material whose heat conductivity coefficient varies with temperature as k= a//T , where a is a constant. The ends of the rod are kept at temperatures T_1 and T_2 . Find the function T(x), where x is the distance from the end whose temperature is T_1 .

Figure shows the cross section of a wall made of white pine of thickness L_(a) and brick of thickness L_(d) = = 2.0 L_(a) , sandwiching two layers of unknonw material with identical thicknesses and thermal conductivities. The thermal conductivity of the pine is k_(a) and that of the brick is k_(d) ( = 5.0k_(a)) . The face area A of the wall is unknown. Thermal conduction through the wall has reached the steady state, the only known interface temperatures are T_(1) = 25^(@)C, T_(2) = 20^(@)C , and T_(5 ) = - 10^(@)C . What is interface temperature T_(4) ?

Two walls of thicknes l_(1) and l_(2) and ther-mal condctivities K_(1) and K_(2) are in contact In the steady state, if the temperature at the outer faces are T_(1) and T_(2) find the temperature at the common wall .