Physics - Fluid Question with Solution | TestHub

The formula for excess pressure inside the bubble is given as $P_0=\frac{4T}{R}$ Where, $\mathrm{T}$ is surface tension and $\mathrm{R}$ is the radius of the sphere Rearranging the formula for $\mathrm{R}$ and substituting the values,$\begin{array}{rl}& R=\frac{4T}{P_0}\\ & R=\frac{4\times 3.2\times 10^{-2}}{25.6}\\ & R=0.5\times 10^{-2}\mathrm{m}=0.5\mathrm{cm}\end{array}$ The diameter then becomes, $2\mathrm{R}=1\mathrm{cm}$