Three rods of same length and area of cross-section but of thermal conductivities K, 2K and 3K are connected in series in the same order. Free end of the first rod is at 0^(0)C and free end of third rod is at 55^(0)C.In steady state, temperature difference across the middle rod is

Three rods of same length and area of cross-section but of thermal con

1.	Three rods of same length and area of cross-section but of thermal conductivities K, 2K and 3K are connected in series in the same order. Free end of the first rod is at 0^(0)C and free end of third rod is at 55^(0)C.In steady state, temperature difference across the middle rod is
Answer» `15^(0)C` `30^(0)C` `10^(0)C` `25^(0)C` ANSWER :A