Question

The excess pressure inside a cylindrical drop of liquid or a cylindrical bubble of radius $r$ in a liquid of surface tension $T$ is

• A. $ \frac{T}{4R} $
• B. $ \frac{T}{R} $
• C. $ \frac{2T}{R} $
• D. $ \frac{4T}{R} $

Answer 1

Answer: (B)

The excess pressure inside a cylindrical drop of liquid or a cylindrical bubble,
$ \Delta p=\frac{T}{R} $