If the work done in blowing a soap bubble of radius $R$ is $W$, then the work done in blowing a soap bubble of radius $2R$ is: (in $W$)

$A$ soap bubble of radius $r$ is blown up to form a bubble of radius $2r$ under isothermal conditions. If $T$ is the surface tension of the soap solution, what is the energy spent in blowing the bubble (in $\pi T r^2$)?

The work done in blowing a soap bubble of radius $R$ is $W_1$ and that of radius $2R$ is $W_2$. The ratio of $W_1$ to $W_2$ is

The work done in blowing a soap bubble of radius $0.2\, m$ is (the surface tension of soap solution being $0.06\, N/m$).

$A$ wire of length $10 \, cm$ is used in a soap film experiment. What is the work done to move the wire by $1 \, mm$? (Surface tension $T = 7.2 \times 10^{-2} \, N/m$)

The potential energy of a molecule on the surface of a liquid compared to the molecules inside the liquid is: