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[" Q "45." A rain drop of radius "0.3" m...

[" Q "45." A rain drop of radius "0.3" mm falling vertically "],[" downwards in air has a terminal velocity of "1m/s" .The "],[" viscosity of air is "18times10^(-5)" poise.The viscous force on "],[" the drop is: "],[[" (a) "101.73times10^(-4)" dyne (b) "101.73times10^(-5)" dyne "],[" (c) "16.95times10^(-5)" dyne (d) "16.95times10^(-6)" dyne "]]

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