B M Sharma Solutions for Chapter: Surface Tension and Viscosity, Exercise 2: CONCEPT APPLICATION EXERCISE

Two water droplets merge with each other to form a large droplet. In this process

A soap bubble of radius $R$ is blown. After heating the solution a second bubble of radius $2R$ is blown. The work required to blow the second bubble in comparison to that required for the first bubble is

If the work done in blowing a bubble of volume $V$ is $W$, then find the work done in blowing the bubble of volume $2 V$ from the same soap solution.

Calculate the work done in blowing up a soap bubble from an initial surface area of $0.5\times {10}^{-4}{ \mathrm{m}}^2$ to final surface area of $1.1\times {10}^{-4}{ \mathrm{m}}^2$. The surface tension of soap solution is $0.03 {\mathrm{Nm}}^{-1}$.

A liquid drop of diameter $D$ breaks into $27$ tiny drops. Find the resultant change in energy. Take the surface tension of the liquid as $T$.