A rain drop of radius 0.3 mm falls through air with a terminal viscosity of `1 m s^(-1)`. The viscosity of air is `18 xx 10^(-5)` poise. The viscous force on the rain drop is
A
`16.95xx10^(-9)`N
B
`1.695xx10^(-9)`N
C
`10.17xx10^(-9)`N
D
`101.73xx10^(-9)`N
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The correct Answer is:
D
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