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Air flows from a small bubble to a large bubble when they are connected to each other by a capillary tube. what is the reason?

Air flows from a small bubble to a large bubble when they are connected to each other by a capillary tube.
what is the reason?

Grade:12th pass

1 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
3 years ago
The excess pressure inside an air bubble is given by the expression,
P=4T/R
Therefore, the larger bubble will have lesser pressure as compared to smaller bubble. Therefore, air has a tendency to move from a higher pressure to lower pressure and hence, the larger bubble will go on expanding until it bursts or the smaller bubble exhausts.

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