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Four rods with different radii 'r' and length 'l' are used to connect to reservoirs of heat at different temperature. Which one of them with conduct most heat?

[A].	r = 2 cm, l = 2m	[B].	r = 1 cm, l = 1m
[C].	r = 2 cm, l =	[D].	r =

Answer: Option C

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