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MHT CET Physics question

PhysicsMechanical Properties of FluidsMHT CET

Due to surface tension, the excess pressure inside a smaller drop is 9 units. If 27 smaller drops of same liquid combine then the excess pressure inside the bigger drop is [MHT-CET 2019]

Answer: (B)

Solution

and , so the new excess pressure is $9/3 =

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Question ID VK-062321