An air bubble of negligible weight having radius r rises steadily through a solution of density \sigma at speed v. The coefficient of viscosity of the solution is given by : [30-Jun-2022-Shift-1]

Correct Answer is : η=2r2σg9v

\eta=\frac{2 r^2 \sigma g}{9 v}

\eta=\frac{2 \pi r^2 \sigma g}{9 v}

\eta=\frac{2 r^2 \sigma g}{3 \pi v}

JEE Main 30 June 2022 Shift 1 Solved Paper

Section: Physics

Question : 35 of 90

Marks: +1, -0

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 solution is given by :

[30-Jun-2022-Shift-1]

η=‌
4rσg
9v
η=‌
2r2σg
9v
η=‌
2πr2σg
9v
η=‌
2r2σg
3πv

Validate

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