Properties of Matter 3 Question 7
13. A drop of liquid of radius having surface tension divides itself into identical drops. In this process the total change in the surface energy . If , then the value of is
(2017 Adv.)
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Answer:
Correct Answer: 13. (a)
(b)
Solution:
- (a) Mass of water
Volume density
Velocity of efflux,
Thrust force on the container due to draining out of liquid from the bottom is given by,
(b) Velocity of efflux when