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NTA Abhyas JEE Main2020PhysicsGravitationPractice

The period of revolution of planet A around the sun is eight times that of B . How many times is the distance of A from the sun, greater than that of B ?

Options

  1. A2
  2. B3
  3. C4
  4. D5

Correct answer

B. 3

Step-by-step solution

As T 2 ∝ r 3 , so, T A 2 T B 2 = r A 3 r B 3 or r A = 4 r B so, r A - r B = 4 r B - r B = 3 r B

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