A small sphere of radius 'r' falls from rest in a viscous liquid. As a result, heat is…
Physics · NEET · NTA Exams — Properties of Solids and Liquids
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
- r4
- r2
- r3
Answer
(D) r 3
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