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MHT CET 2022 Physics question

PhysicsMechanical Properties of FluidsMHT CET 2022

8 identical small drops of water are falling down vertically through a medium, each with terminal velocity 'V'. If they combine to form a single drop, then its terminal velocity will be

Answer: (D)

Solution

Terminal velocity of a spherical drop in a viscous medium (Stokes' law) is , so . Volume conservation: ,

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Question ID VK-093935