A small sphere of radius `r' falls from rest in a viscous liquid. As a result, heat is produced due to viscous force. The rate of production of heat when the sphere attains its terminal velocity, is proportional to
r5
r2
r3
r4
As we have learned
Net force on the body -
- wherein
Rate of heat production
rate of heat
Option 1)
r5
This is correct
Option 2)
r2
This is incorrect
Option 3)
r3
This is incorrect
Option 4)
r4
This is incorrect