JEE Main 2022 · 28 Jul · Shift 1 · Physics Q58

← JEE Main 2022 · 28 Jul · Shift 1

PhysicsInteger+4 / -1Question 58 of 90

The diameter of an air bubble which was initially 2 mm, rises steadily through a solution of density 1750 kg m $^{-3}$ at the rate of 0.35 cms $^{-1}$ . The coefficient of viscosity of the solution is ______ poise (in nearest integer). (the density of air is negligible).

Your answer

Answer and worked solution

Official answer: 11

Terminal velocity. $\eta=\frac{2r^2\rho g}{9v}=\frac{2(10^{-3})^2(1750)(9.8)}{9(0.0035)}=1.09$ Pa s $\approx11$ poise.

Answer: 11

Topics:Viscosity and Stokes' law Terminal velocity

← Previous question Next question →

JEE Main 2022 · 28 Jul · Shift 1, Physics question 58