(C) The excess pressure inside a soap bubble is given by $P = \frac{4T}{r}$,where $T$ is the surface tension and $r$ is the radius of the bubble.Since

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air flows from smaller bubble to bigger

(C) The excess pressure inside a soap bubble is given by $P = \frac{4T}{r}$,where $T$ is the surface tension and $r$ is the radius of the bubble.Since the excess pressure is inversely proportional to the radius $(P \propto \frac{1}{r})$,the smaller bubble has a higher internal pressure compared to the larger bubble.When connected by a tube,air flows from the region of higher pressure to the region of lower pressure.Therefore,air flows from the smaller bubble to the larger bubble.

Class 11 Physics Fluid Mechanics and Surface Tension Excess Pressure and coalesce of Bubble and drop

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If two soap bubbles of different radii are connected by a tube,then

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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

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Fluid Mechanics and Surface Tension

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Excess Pressure and coalesce of Bubble and drop

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If two soap bubbles of different radii are connected by a tube,then

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