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JEE Main202325 Jan 2023Evening ShiftPhysicsGravitationActual

Every planet revolves around the sun in an elliptical orbit : A. The force acting on a planet is inversely proportional to square of distance from sun. B. Force acting on planet is inversely proportional to product of the masses of the planet and the sun. C. The centripetal force acting on the planet is directed away from the sun. D. The square of time period of revolution of planet around sun is directly proportiona

Options

  1. AA and D only
  2. BC and D only
  3. CB and C only
  4. DA and C only

Correct answer

A. A and D only

Step-by-step solution

Newton's law of gravitation state that gravitational force between two point masses is directly proportional to the product of their masses m 1   and   m 2 and inversely proportional to the square of the distance r between them. It is stated as F = G m 1 m 2 r 2 A planet moves around the sun in a circular path for which the gravitational force of attraction on the planet by the sun provides the necessary centripetal force. This centripetal force is always directed towards the centre of the sun at each

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