Physics · 2022
JEE Main · 30 June 2022, Shift 1 · Q35
An air bubble of negligible weight having radius r rises steadily through a solution of density σ at speed v. The coefficient of viscosity of the…
An air bubble of negligible weight having radius r rises steadily through a solution of density $\displaystyle \sigma$ at speed $\displaystyle v$. The coefficient of viscosity of the solution is given by :
Official answer
(2)
$\displaystyle \eta=\frac{2 \mathrm{r}^2 \sigma \mathrm{~g}}{9 v}$
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.