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[" 25.A rain drop of radius "0.3mm" fall...

[" 25.A rain drop of radius "0.3mm" falling vertically "],[" downwards in air has a terminal velocity of "],[1ms^(-1)" .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^(-4)" dyne "]]

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