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Which of the following circular rods (gi...

Which of the following circular rods (given radius `r` and length `l`) each made of the same material and whose ends are maintained at the same temperature will conduct most heat?

A

`r = 2 r_(0), l = 2 l_(0)`

B

`r = 2 r_(0), l = l_(0)`

C

`r = r_(0), l = l_(0)`

D

`r = r_(0), l = 2l_(0)`

Text Solution

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The correct Answer is:
b
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