SSC JE Civil Engineering 2017 Set 2 Solved Paper

${\mathit{h}}_{\mathrm{oil}}=\frac{{\mathit{h}}_{\mathrm{water}}}{\mathit{G}}$ $=\frac{42.5}{0.85}=50\mathit{m}$$\mathit{u}=-\frac{1}{2}\frac{\mathit{d}\mathit{p}}{\mathit{d}\mathit{x}}\left(\mathit{B}\mathit{y}-{\mathit{y}}^2\right)$
The wake is the region of disturbed flow (often turbulent) downstream of a solid body moving through a fluid, caused by the flow of the fluid around the body after separation.