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Heat is flowing through two cylindrical ...

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

Text Solution

Verified by Experts

The correct Answer is:
`1:8`
`Q_1 // Q_2 = (A_1 // A_2 ) xx ( x_1 // x_2) = (1//4) xx (1//2) = 1:8`
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