QJEEM21Ph9b8b: JEE Main 2021 Physics - Class 11 JEEM21Ph9b8b Solution: A rod CD of thermal resistance 10.0 KW − 1 is joined at the…

A rod CD of thermal resistance 10.0 KW^$$-$$1 is joined at the middle of an identical rod AB as shown in figure. The end A, B and D are maintained at 200$${}^{\circ }$$C, 100$${}^{\circ }$$C and 125$${}^{\circ }$$C respectively. The heat current in CD is P watt. The value of P is ................. .