AP EAMCET2014PhysicsMechanical Properties of Fluids
When a big drop of water is formed from n small drops of water, the energy loss is 3 E , where, E is the energy of the bigger drop. If R is the radius of the bigger drop and r is the radius of the smaller drop, then number of smaller drops (n) is
Options
- A4 R r^2
- B4 R r
- C2 R^2 r
- D4 R^2 r^2
Correct answer
D. 4 R^2 r^2
Step-by-step solution
The energy of n small drop - the energy of the bigger drop = Energy loss by bigger drop gathered n 4 r^2 T-4 r^2 T=3 4 R^2 T n 4 r^2 T=12 R^2 T+4 R^2 T n= 16 R^2 T 4 r^2 T n=4 R^2 r^2 gathered