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4 rods of same material but with different radii & lengths are used to connect 2 reservoirs of heat with the same temperature difference. Which one will conduct more heat

4 rods of same material but with different radii & lengths are used to connect  2 reservoirs of heat with the same temperature difference.  Which one will conduct more heat

Grade:11

1 Answers

Umakant biswal
5359 Points
4 years ago
@ sreenidhi 
the rods whose a/l ratio is more will conduct more amount of heat . 
as per the relation 
dq/dt = k (t1-t2) *a / l 
so, by solving that 
dq/dt is directly prop to a/l 
and if dq/dt will increase then a/l will also increase . 
HOPE IT CLEARS YOUR DOUBT 
ALL THE BEST ..

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