MCQ
The excess pressure due to surface tension in a spherical liquid drop of radius r is directly proportional to
- A$r$
- B${r^2}$
- ✓${r^{ - 1}}$
- D${r^{ - 2}}$
✓
Answer
Correct option: C.
${r^{ - 1}}$
c
The excess pressure due to surface tension in a spherical liquid drop of radius $r$ is excess \ pressure $\Delta p \propto r ^{-1}$
The excess pressure due to surface tension in a spherical liquid drop of radius $r$ is excess \ pressure $\Delta p \propto r ^{-1}$
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