Physics - Fluid Question with Solution | TestHub

A liquid column of height $0.04\mathrm{cm}$ balances excess pressure of a soap bubble of certain radius. If density of liquid is $8\times 10^3\mathrm{kg}{\mathrm{m}}^{-3}$ and surface tension of soap solution is $0.28{\mathrm{Nm}}^{-1}$, then diameter of the soap bubble is _____ $\mathrm{cm}$. (if $g=10\mathrm{m}{\mathrm{s}}^{-2}$ )