Q 11-09-105JEE MainJEE Main 2022 (26 Jun, Shift 2)Easy
If $\rho$ is the density and $\eta$ is the coefficient of viscosity of a fluid which flows with a speed $v$ in a pipe of diameter $d$, the correct formula for Reynolds number $R_e$ is
Answer: (C) $R_e = \dfrac{\rho vd}{\eta}$
Reynolds number $R_e = \dfrac{\rho vd}{\eta}$, the ratio of inertial to viscous forces (dimensionless).
Solution by Sreeraj P, M.Sc Physics