Physics - Fluid Question with Solution | TestHub

Using equation of continuity, ${\mathrm{A}}_1{\mathrm{V}}_1={\mathrm{A}}_2{\mathrm{V}}_2$ In streamlined flow, as the product of $\mathrm{Av}$ is a constant, the velocity at the narrowest part will be maximum. By using Bernoulli's principle, $\mathrm{P}+\frac{1}{2}\rho v^2+\rho gh=\text{ Constant }$ We see that $\rho gh$ is constant because the pipe is horizontal. As velocity increases, for the equation to remain constant, $\mathrm{P}$ has to decrease. $\therefore$ Velocity will be maximum and pressure is minimum