Questions
Which of the following circular rods (given : radius rand length l) each made of the same material and whose ends are maintained at the same temperature will conduct most heat ?
a
r=2r0 ,l=2l0
b
r = 2r0 , l= l0
c
r= r0, l= 2l0
d
r = r0 ,l =l0
detailed solution
Correct option is B
use heat resistance RH=lKA=lKπr2Qt=k A dθdx Qtαr2lTalk to our academic expert!
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