A planet is revolving around a star in a circular orbit of radius R with a period T. If the gravitational force between the planet and the star is proportional to R-3/2, then
(A) T2 ∝ R5/2
(B) T2 ∝ R-7/2
(C) T2 ∝ R3/2
(D) T2 ∝ R4
1 Answers
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A star is at a distance of `50xx10^(12)` km from earth. If the star disappears due to collision with some other star so that its light is extinguished
Correct Answer - `5.3`years
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2 Answers 5 views
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Time period of revolution of a satellite around a planet of radius R is T. Period of revolution around another planet whose radius is 3R is
2 Answers
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2 Answers 1 views
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Correct option is: (C) at infinity.
2 Answers 5 views
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(C) Satellite will escape in tangential path.
2 Answers 1 views
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Correct option is C) equal
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