MPSC PYQScienceenglish
The ratio of lengths to radii of two rods of same material is 1 : 2 and 2 : 3. If temperature difference between two ends of the rod is same, then what will be the ratio of heat flow?
A.3 : 2
B.4 : 3
C.1 : 3
D.8 : 9
Correct answer: D