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Four rods with different radii r and len...

Four rods with different radii `r` and length `l` are used to connect two reservoirs of heat at different temperatures. Which one will conduct most heat ?

A

`r = 1 cm , l = 1 m`

B

`r = 1 cm, l = 1/2 m`

C

`r = 2 cm, l = 2 m `

D

`r = 2 cm, l = 1/2 m`

Text Solution

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The correct Answer is:
D
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