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An air bubble of radius 1 cm rises from ...

An air bubble of radius 1 cm rises from the bottom portion through a liquid of density `1.5 g c c^(-1)` at a constant speed of `0.25cms^-1`. If the density of air is neglected, the coefficient of viscosity of the liquid is approximately, (in Pa-s)

A

13000

B

1300

C

130

D

13

Text Solution

Verified by Experts

The correct Answer is:
D
`eta=2/9 . (r^(2)rhog)/V =2/9 (1xx10^(-2))^(2) xx (1.5xx10^(3)xx9.8)`
`therefore eta =130 Pa -s`
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