Question

If $R$ is the radius of a soap bubble and $S$ its surface tension, then the excess pressure inside is

• A. $\frac{2S}{R}$
• B. $\frac{3S}{R}$
• C. $\frac{4S}{R}$
• D. $\frac{S}{R}$

Answer 1

Answer: (C)

If $R$ is the radius of a soap bubble and $S$ its surface tension then the excess pressure inside Is
$\frac{4S}{R}$ .