A small sphere of radius r and density rho falls from rest in a viscous liquid of density gamma and coefficient of viscous eta. Due to friction heat is produced. The rate of production of heat when the sphere has acquired the terminal velocity is proportional to

A small sphere of radius r and density rho falls from rest in a viscou

1.	A small sphere of radius r and density rho falls from rest in a viscous liquid of density gamma and coefficient of viscous eta. Due to friction heat is produced. The rate of production of heat when the sphere has acquired the terminal velocity is proportional to
Answer» `r^2` `r^3` `r^4` `r^5` ANSWER :D