A sphere of a radius r cm falls from rest in a viscous liquid. Head is produced due to viscous force. The rate of production of heat when the sphere attians its terminal velocity is proportional to …..

A sphere of a radius r cm falls from rest in a viscous liquid. Head is

1.	A sphere of a radius r cm falls from rest in a viscous liquid. Head is produced due to viscous force. The rate of production of heat when the sphere attians its terminal velocity is proportional to …..
Answer» `R^(2)` `r^(3)` `r^(4)` `r^(5)` Solution :Rate of HEAT production=F.V, `=6pietarvxxv=6pietarv^(2)` `[v prop r^(2)]` TERMINAL VELOCITY `prop r^(5)`