If two soap bubble of different radii are in communication with each other

Options

A. air flows from larger bubble into the smaller one until the two bubbles are of equal size
B. the size of the bubbles remains the same
C. air flows from the smaller bubble into the larger one and larger bubble grows at the expense of the smaller one
D. the air flows from the larger bubble into the smaller bubble until the radius of the smaller one becomes equal to that of the larger one, and of the larger one equal to that of the smaller one.

Answer

C

Explanation

As pressure inside the smaller bubble is greater than that inside a larger bubble ( `:.` excess pressure inside a bubble is inversely proportional to its radius), hence air flows from the smaller bubble into the larger bubble and larger bubble grows at the expense of smaller one.