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An air bubble (radius 0.4 mm) rises up i...

An air bubble (radius 0.4 mm) rises up in water. If the coefficient of viscosity of water be `1xx10^(-3)kg//(m-s)`, then determine the terminal speed of the bubble density of air is negligible

A

` 0.84 m//s `

B

` 3.5 m//s `

C

`0.48 m//s `

D

`0.35 m//s `

Text Solution

Verified by Experts

The correct Answer is:
D
At terminal speed, ` F = B , 6 pi eta r v = 4//3 pi r ^ 3 rho _w g , ` solving ` v = 0. 348 m//s `
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