A body of mass m is orbiting the earth at a radius r from the center of earth. Another body of mass 2m is orbiting at a radius 2r. What is the ratio of their time period?

Options

(a) 1 : 2²/³
(b) 1 : 2
(c) 1 : √2
(d) 1 : 2√2

Correct Answer:

1 : 2√2

Explanation:

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