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Heat Transfer

Four cylindri...

Question

Four cylindrical rods of different radii and lengths are used to connect two heat reservoirs at fixed temperatures t₁ and t₂ respectively. From the following pick out the rod which will conduct the maximum quantity of heat:

A

Radius 1 cm, length 1 m

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B

Radius 1 cm, length 2 m

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C

Radius 2 cm, length 4 m

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D

Radius 3 cm, length 8 m

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Solution

The correct option is D
Radius 3 cm, length 8 m

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