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Properties of Matter question

2021 · 27 Jul · Shift 2 · Q47
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  5. /2021 · 27 Jul · Shift 2 · Q47

Properties of Matter question

2021 · 27 Jul · Shift 2 · Q47

JEE MainPhysicsProperties of MatterMCQ+4 / −1
A raindrop with radius R = 0.2 mm falls from a cloud at a height h = 2000 m above the ground. Assume that the drop is spherical throughout its fall and the force of buoyance may be neglected, then the terminal speed attained by the raindrop is : [Density of water fw = 1000 kg m −-− 3 and Density of air fa = 1.2 kg m −-− 3, g = 10 m/s2, Coefficient of viscosity of air = 1.8 ×\times× 10 −-− 5 Nsm −-− 2]
  1. A
    250.6 ms −-− 1
  2. B
    43.56 ms −-− 1
  3. C
    4.94 ms −-− 1
  4. D
    14.4 ms −-− 1
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