Ncert Exercises & Solutions

The volume of a liquid flowing out per second of a pipe of length l and radius r is written by a student as $V = \frac{π}{8} \frac{\Pr^{4}}{ηl}$ where P is the pressure difference between the two ends of the pipe and $η$ is the coefficient of the viscosity of the liquid having dimensional formula $[{ML}^{- 1} T^{- 1}]$ . Check whether the equation is dimensionally correct.