If two soap bubbles of different radii are connected by a tube:
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C
The excess pressure inside the soap bubble in inversely proportional to radius of soap bubble
i.e. P e ∝ 1/r, r being the radius of bubble. It follows that pressure inside a smaller bubble is greater than that inside a bigger bubble. Thus, if these two bubbles are connected by a tube, air will flow from smaller bubble to bigger bubble and the bigger bubble grows at the expense of the smaller one.
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