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MHT CET 2020 (19 Oct, Shift 2) · Terminal Velocity

Terminal Velocity question from MHT CET 2020 (19 Oct, Shift 2)

Q46MHT CET 2020 · 19 OCT · SHIFT 2Medium

Terminal Velocity

Two spherical rain drops reach the surface of the earth with terminal velocities having ratio 16:916 : 9. The ratio of their surface area is

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Answer: (c)

  1. v∝r2v \propto r^2 and surface area A=4πr2∝r2A = 4\pi r^2 \propto r^2.
  2. So A∝vA \propto v: A1:A2=16:9A_1 : A_2 = 16 : 9
  3. So the answer is (c) 16:916 : 9.
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