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^(@)C and free end of third rod is at 55^(@)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^(@)C and free end of third rod is at 55^(@)C. In steady state, temperature difference across the middle rod is
Answer» `15^(@) C` `30^(@) C` `10^(@) C` `25^(@) C` ANSWER :A