Home
Class 11
PHYSICS
The figure shows the cross-section of th...

The figure shows the cross-section of the outer wall of a house buit in a hill-resort to keep the house insulated from the freezing temperature of outside. The wall consists of teak wood of thickness `L_(1)` and brick of thickness `(L_(2) = 5L_(1))`, sandwitching two layers of an unknown material with identical thermal conductivites and thickness. The thermal conductivity of teak wood is `K_(1)` and that of brick is `(K_(2) = 5K)`. Heat conducion through the wall has reached a steady state with the temperature of three surfaces being known. `(T_(1) = 25^(@)C, T_(2) = 20^(@)C` and `T_(5) = - 20^(@)C)`. Find the interface temperature `T_(4)` and `T_(3)`.

Promotional Banner

Similar Questions

Explore conceptually related problems

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) ?

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

Consider a compound slab consisting of two different material having equal thickness and thermal conductivities K and 2K respectively. The equivalent thermal conductivity of the slab is

Consider a compound slab consisting of two different material having equal thickness and thermal conductivities K and 2K respectively. The equivalent thermal conductivity of the slab is

Consider a compound slab consisting of two different material having equal thickness and thermal conductivities K and 2K respectively. The equivalent thermal conductivity of the slab is