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Two soap bubbles A and B of different di...

Two soap bubbles `A` and `B` of different diameters are blown at the two ends of a bent tube. By opening the stopcock `S`, the two bubbles are put in communication. What will happen?

Text Solution

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The excess pressure inside a soap bubble is inversely proportional to its radius. Hence, the pressure inside `A` is greater than the pressure inside b. Air will flow from `A` to b. therefore, `A` will become smaller and `B` will become larger.
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