Which of the following circular rods. (given radius $ r$ and length $l$ ) each made of the same material as whose ends are maintained at the same temperature will conduct most heat
Which of the following circular rods. (given radius $ r$ and length $l$ ) each made of the same material as whose ends are maintained at the same temperature will conduct most heat
- [AIPMT 2005]
- 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
$r = {r_0};\;l = 2{l_0}$
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