If layer thickness `L_(2)` is `1.4 cm`, then its thermal conductivity `K_(2)` will have value `("in " W//mK)`

Two plates each of area A thickness L_(1) and L_(2) thermal conductivities K_(1) and K_(2) respectively are joined to from a single plate of thickness (L_(1)+L_(2)) If the temperatures of the free surfaces are theta_(1) and theta_(2) Calculate (a) Rate of flow of heat (b) Temperature of interface .

A composite slab is prepared by pasting two plates of thickness L_(1) and L_(2) and thermal conductivities K_(1) and K_(2) . The slab have equal cross-sectional area. Find the equivalent conductivity of the composite slab.

A composite slab is prepared by pasting two plates of thickness L_(1) and L_(2) and thermal conductivities K_(1) and K_(2) . The slab have equal cross-sectional area. Find the equivalent conductivity of the composite slab.

A composite slab is prepared by pasting two plates of thickness L_(1) and L_(2) and thermal conductivites K_(1) and K_(2) . The slab have equal cross-sectional area. Find the equivalent conductivity of the composite slab.

Assertion : The equivalent thermal conductivity of two plates of same thickness in contact (series) is less than the smaller value of thermal conductivity. Reason : For two plates of equal thickness in contact (series) the equivalent thermal conductivity is given by 1/K = 1/K_(1) + 1/K_(2)

Define coefficient of thermal conductivity. State its MKS unit

Two plates eachb of area A, thickness L_1 and L_2 thermal conductivities K_1 and K_2 respectively are joined to form a single plate of thickness (L_1+L_2) . If the temperatures of the free surfaces are T_1 and T_2 . Calculate. (a) rate of flow of heat (b) temperature of interface and (c) equivalent thermal conductivity.

Two plates eachb of area A, thickness L_1 and L_2 thermal conductivities K_1 and K_2 respectively are joined to form a single plate of thickness (L_1+L_2) . If the temperatures of the free surfaces are T_1 and T_2 . Calculate. (a) rate of flow of heat (b) temperature of interface and (c) equivalent thermal conductivity.

A wall has two layers A and B each made of different materials. The layer A is 10cm thick and B is 20 cm thick. The thermal conductivity of A is thrice that of B. Under thermal equilibrium temperature difference across the wall is 35^@C . The difference of temperature across the layer A is