MHT CET 2023 Physics question
'n' number of liquid drops each of radius 'r' coalesce to form a single drop of radius 'R'. The energy released in the process is converted into the kinetic energy of the big drop so formed. The speed of the big drop is
[T = surface tension of liquid, = density of liquid.]
Answer: (D)
Solution
Volume is conserved: , so . Energy released . This becomes kinetic energy of the big drop:
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