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A satellite which is geostationary in a particular orbit is taken to another orbit. Its distance from the centre of earth in new orbit is 2 times that of the earlier orbit. The time period in the second orbit is

(a)      4.8 hours                                   (b)  48√2  hours

(c)   24 hours                                    (d) 24 √2 hours

Answer: b

(3)

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