Three rods of the same dimension have thermal conductivities 3K, 2K and K. They are arranged as shown in fig. Given below, with their ends at `100^(@)C, 50^(@)C` and `20^(@)C`. The temperature of their junction is :-

Three rods of the same dimension have thermal conductivities 3K, 2K and K. They are arranged as shown in fig. with their ends at 100^(@)"C", 50^(@)"C and "20^(@)"C" . The temperature of their junction is

Three rods of the same dimensions have thermal conductivities 3 k , 2 k and k . They are arranged as shown, with their ends at 100^(@)C, 50^(@)C and 0^(@)C . The temperature of their junction is :-

Three rods of same dimensions have thermal condutivity 3K,2K and K They are arranged as shown in Then the temperature of the junction in steady state is .

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

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 rods of same dimensions have thermal conductivities 3K, 2k and K, with their ends at 100^@C , 50^@C and 0^@C respectively . They re arranged as shown in the diagram . The temperature of the junction J in steady -state is

Three rods of same dimension are joined in series having thermal conductivity k_1 , k_2 and k_3 . The equivalent thermal conductivity is

Two identical rods are made of different materials whose thermal conductivities are K_(1) and K_(2) . They are placed end to end between two heat reservoirs at temperatures theta_(1) and theta_(2) . The temperature of the junction of the rod is