Heat is flowing through two cylindrical rods of the same material. The diamters of the rods are in the ratio 1: 2 and the length in the ratio 2 : 1. If the temperature difference between the ends is same then ratio of the rate of flow of heat through them will be

Heat is flowing through two cylindrical rods of the same material. The

1.	Heat is flowing through two cylindrical rods of the same material. The diamters of the rods are in the ratio 1: 2 and the length in the ratio 2 : 1. If the temperature difference between the ends is same then ratio of the rate of flow of heat through them will be
Answer» SOLUTION :`Q_1 // Q_2 = (A_1 // A_2 ) XX ( x_1 // x_2) = (1//4) xx (1//2) = 1:8`