Question Detail
Question
What is the gauge pressure P inside a spherical gas bubble that is formed within a liquid, such as a cavity in the liquid?
Correct Answer
Option B is the correct answer.
Detailed Explanation
For a gas bubble inside a liquid, there is only one liquid-gas interface. The pressure difference across this single curved surface is given by P = 2γ / r.
Hint
A bubble inside a liquid has only one surface, unlike a soap bubble which has two.