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The heat is flowing through two cylindri...

The heat is flowing through two cylindrical rods of same material. The diameters of the rods are in the ratio 1:2 and their lengths are in the ratio 2:1. If the temperature difference between their ends is the same, the ratio of rate of flow of heat through them will be

A

1:1

B

2:1

C

1:4

D

1:8

Text Solution

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The correct Answer is:
d
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Knowledge Check

  • The ratio of the diameters of two metallic rods of the same material is 2 : 1 and their lengths are in the ratio 1 : 4. If the temperature difference between their ends are equal, the rate of flow of heat in them will be in the ratio

    A
    2:1
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    4:1
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    `1:sqrt(3)`
    B
    `1:3`
    C
    `3:1`
    D
    `1:9`

  • Two discs of same material have the same mass. If their thickness are in the ratio 1:3 , then their moment of inertia are in the ratio

    A
    `1:sqrt(3)`
    B
    `1:3`
    C
    `3:1`
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