JEE Main 2022 · 26 Jun · Shift 2 · Physics Q36

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PhysicsSingle correct+4 / -1Question 36 of 90

If $\rho$ is the density and $\eta$ is coefficient of viscosity of fluid which flows with a speed $v$ in the pipe of diameter d, the correct formula for Reynolds number $R_e$ is :

R_e=\dfrac{\eta d}{\rho v}

R_e=\dfrac{\rho v}{\eta d}

R_e=\dfrac{\rho vd}\eta

R_e=\dfrac\eta{\rho vd}

Answer and worked solution

Official answer: C

Reynolds number (inertial over viscous forces): $R_e=\dfrac{\rho vd}\eta$ .

(C)

Topics:Viscosity and Stokes' law

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JEE Main 2022 · 26 Jun · Shift 2, Physics question 36