Question
A large bubble is formed at one end of capillary tube and a small one at the other end. Which one will grow at the expense of the other?
Solution
Given, a large bubble on one end of the capillary tube and a small one on the other end of the capillary tube.
We have,
Excess of pressure inside the soap bubble, .
This implies that pressure is inversely proportional to the radius of the bulb.
Therefore, pressure inside the bigger bubble will be less than that inside the smaller bubble. Therefore, the air will flow from smaller bubble to bigger bubble.
Hence the bigger bubble will grow at the expense of smaller bubble.
We have,
Excess of pressure inside the soap bubble, .
This implies that pressure is inversely proportional to the radius of the bulb.
Therefore, pressure inside the bigger bubble will be less than that inside the smaller bubble. Therefore, the air will flow from smaller bubble to bigger bubble.
Hence the bigger bubble will grow at the expense of smaller bubble.
