What is the terminal velocity of a rain drop of radius 0.02 {mm} ? [Note that the coefficient of viscosity of air is 1.8 \times 10^{-5} {N} \/ {m}^{2}, density of water is 1000 {Kg} \/ {m}^{3}. Use {g}=10 {m} \/ {s}^{2} and density of air can be neglected in comparison with density of water]

TS EAMCET 18-July-2022 Shift 2 Solved Paper

Section: Physics

Question : 95 of 160

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What is the terminal velocity of a rain drop of radius 0.02mm ?
[Note that the coefficient of viscosity of air is 1.8×10−5N∕m2, density of water is 1000Kg∕m3. Use g=10m∕s2 and density of air can be neglected in comparison with density of water]

4.9cm∕s
9.8cm∕s
0.49cm∕s
49cm∕s

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