Two soap bubbles of radii r and 2r are connected by a capillary tube-value arrangement as shown in the diagram. The value is now opened. Then which one of the following will result

Options

A. The radii of the bubbles will remain unchanged
B. The bubbles will have equal radii
C. The radius of the smaller bubble will increase and that of the bigger bubble will decrease
D. The radius of the smaller bubble will decrease and that of the bigger bubble will increase

Answer

D

Explanation

As pressure inside smaller bubble is greater than pressure inside bigger bubble, so air flows from smaller to bigger.