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NTA Abhyas JEE Main2020PhysicsGravitationPractice

A planet moving around the sun sweeps area A 1 in 2 days, A 2 in 4 days and A 3 in 9 days. Then, relation between them

Options

  1. AA 1 = A 2 = A 3
  2. B9 A 1 = 3 A 2 = 2 A 3
  3. C18 A 1 = 9 A 2 = 4 A 3
  4. D3 A 1 = 4 A 2 = 6 A 3

Correct answer

C. 18 A 1 = 9 A 2 = 4 A 3

Step-by-step solution

From Kepler's law of area, the aerial velocity remains constant, for a planet moves around the sun. We have, A 1 2 = A 2 4 = A 3 9 ⇒ 18 A 1 = 9 A 2 = 4 A 3

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