Physics - Fluid Question with Solution | TestHub

A water film is formed between the two straight parallel wires, each of length 10 $\mathrm{cm}$, kept at a separation of $0\cdot 5\mathrm{cm}$. Now, the separation between them is increased by $1\mathrm{mm}$ without breaking the water film. The work done for this is (surface tension of water $=7\cdot 2\times 10^{-2}{\mathrm{Nm}}^{-1}$ )