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Question: Answered & Verified by Expert
If two soap bubbles of different radii are connected by a tube, then
PhysicsMechanical Properties of FluidsJIPMERJIPMER 2012
Options:
  • A air flows from bigger bubble to the smaller bubble till sizes become equal
  • B air flows from bigger bubble to the smaller bubble till sizes are interchanged
  • C air flows from smaller bubble to bigger
  • D there is no flow of air
Solution:
1815 Upvotes Verified Answer
The correct answer is: air flows from smaller bubble to bigger
Air flows from smaller bubble to bigger as the pressure in smaller bubble is higher.
Pressure inside a bubble \(=P_o+\frac{4 S}{R}\)
When they are connected using a tube then, as smaller bubbles {due to small radius} has higher pressure, the air flows from smaller bubble to bigger bubble until the smaller bubble vanishes completely.

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