Two cylinders P and Q have the same length and diameter and are made of different materials having thermal conductivities in the ratio 2 : 3. These two cylinders are combined to make a cylinder. One end of P is kept at `100° C` and another end of Q at `0° C` . The temperature at the interface of P and Q is

Two cylinders P and Q have the same length and diameter and are made of different materials having thermal conductivities in the ratio 2 : 3 . These two cyinders ar combined to make a cylinder. One end of P is kept at 100^(@)C and another end of Q at 0^(@)C . THe temperature at the interface of P and Q is

Two identical rods AC and CB made of two different metals having thermal conductivities in the ratio 2 : 3 are kept in contact with each other at the end C as shown in the figure.A is at 100^(@)C and B is at 25^(@) C.Then the junction C is at

A slab consists of two parallel layers of copper and brass of the same thickness and having thermal conductivities in the ratio of 1:4. If the free face of brass is at 100°C and that of copper at 0°C, the temperature of interface is

Two long ,thin,solid cylinders are identical in size, by they are made of different substances with two different thermal conductivities. The two cylinders are connected in series between a reservoir at temperature T_("hot") and a reservoir at temperature T_("cold") .The temperature at the boundary between the two cylinders is T_("b") . One can conclude that:-

Two long ,thin,solid cylinders are identical in size, by they are made of different substances with two different thermal conductivities. The two cylinders are connected in series between a reservoir at temperature T_("hot") and a reservoir at temperature T_("cold") .The temperature at the boundary between the two cylinders is T_("b") . One can conclude that:-

Two long ,thin,solid cylinders are identical in size, by they are made of different substances with two different thermal conductivities. The two cylinders are connected in series between a reservoir at temperature T_("hot") and a reservoir at temperature T_("cold") .The temperature at the boundary between the two cylinders is T_("b") . One can conclude that:-

A slab consists of two parallel layers of copper and brass of the same thichness and having thermal conductivities in the ratio 1:4 If the free face of brass is at 100^(@)C anf that of copper at 0^(@)C the temperature of interface is .

A slab consists of two parallel layers of copper and brass of the same thichness and having thermal conductivities in the ratio 1:4 If the free face of brass is at 100^(@)C anf that of copper at 0^(@)C the temperature of interface is .

Same quantity of ice is filled in each of the two metal containers P and Q having the same size, shape and wall thickness but made of different materials. The containers are kept in identical surroundings. The ice in P melts completely in time t_1 whereas that in Q takes a time t_2 . The ratio of thermal conductivities of the materials of P and Q is