Question 222: Properties of Matter

Question

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

Accepted Answer

Pressure inside the bubble, P $ = {p_0} + {{4T} \over R}$
So $P \propto {1 \over R}$ where R is the radius of the bubble. It means pressure inside a smaller bubble is greater than the inside of a bigger bubble.
So when two bubbles are connected by a tube, air will flow from smaller bubble to bigger bubble and the size of bigger bubble will increase.

Answer

air flows from the smaller bubble to the bigger

Answer

air flows from bigger bubble to the smaller bubble till the sizes are interchanged

Answer

air flows from the bigger bubble to the smaller bubble till the sizes become equal

Answer

there is no flow of air.

Properties of Matter

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

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