MHT CET 2024 Physics question
A liquid drop of density ' ' is floating half immersed in a liquid of density d. If 'T' is the surface tension then the diameter of the liquid drop is (g = acceleration due to gravity)
Answer: (C)
Solution
Let the radius be . Forces on the drop: weight downward; buoyant force (half volume immersed) upward; surface tension force along the line of contact (circumference ) upward, . Equilibrium: \dfracr^3\dfrac$23π
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