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NTA Abhyas JEE Main2020PhysicsGravitationPractice

The given figure shows the elliptical orbit of a planet m about the sun S . If t 1 is the time taken by the planet to move from C to D and t 2 is the time taken by the planet to move from A to B , then the relation between t 1 and t 2 is [Given, a r e a S C D = 2 a r e a S A B ]

Options

  1. At 1 = 4 t 2
  2. Bt 1 = 2 t 2
  3. Ct 1 = t 2
  4. D2 t 1 = t 2

Correct answer

B. t 1 = 2 t 2

Step-by-step solution

According to kepler's second law Equal areas are swept in equal time. t 1 , the time taken to go from C to D = 2t 2 where t 2 is the time taken to go from A to B. As it is given that area SCD = 2SAB. ​

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