MHT CET Physics question
A fix number of spherical drops of a liquid of radius 'r' coalesce to form a large drop of radius 'R' and volume 'V'. If 'T' is the surface tension then energy [MHT-CET 2023]
Answer: (B)
Solution
With n drops, and total volume V: initial area , final area ; surface area decreases, so energy
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