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What will be the approximate terminal ve...

What will be the approximate terminal velocity of a rain drop of diamteter `1.8xx 10^(-3)m,` when density of rain water `~~10^(3)kgm^(-3)` and the co-efficient of viscosity of air `~~1.8xx10^(-5)Nsm^(-2)` ? (Neglect buoyancy of air. )

A

`49 ms^(-1)-`

B

`98 ms^(-1)`

C

`392 ms^(-1)`

D

`980 ms^(-1)`

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The correct Answer is:
B
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