Physics - Fluid Question with Solution | TestHub

Here, velocity head $=20\mathrm{cm}$ of Hg $=20\times 13.6\mathrm{cm}$ of water. As, velocity head $=\frac{v^2}{2\mathrm{g}}$ $\therefore 20\times 13.6=\frac{{\mathrm{v}}^2}{2\times 1000}$ $\begin{array}{rl}\mathrm{v}& =\sqrt{20\times 13.6\times 2\times 1000}\\ & =737.56{\mathrm{cms}}^{-1}\\ & =7.3756{\mathrm{ms}}^{-1}\end{array}$