Two bubbles of different radii are connected by a hollow tube, then:

smaller bubble gets smaller, larger gets larger

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smaller bubble gets larger and larger gets smaller

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both get smaller

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both get larger and ultimately burst

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Solution

The correct option is D smaller bubble gets smaller, larger gets larger
The excess pressure inside the soap bubble is inversely proportional to the radius of the soap 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 a bigger bubble and the bigger bubble grows at the expense of the smaller ones.

Hence, the correct option is $A$

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