1. Tardigrade
  2. Question
  3. Physics
  4. The surface tension of water is 0.072 N m- 1 . The excess pressure inside a water drop, of diameter 1.2 mm , is

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. The surface tension of water is $0.072 \, N \, m^{- 1}$ . The excess pressure inside a water drop, of diameter $1.2 \, mm$ , is

NTA AbhyasNTA Abhyas 2020

Solution:

$\textit{P}=\frac{2 \textit{S}}{\textit{r}}=\frac{4 \textit{S}}{\textit{D}}=\frac{4 \times 0 \text{.} 0 7 2}{1 \text{.} 2 \times 1 0^{- 3}}=240\text{N}\text{m}^{- 2}$