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A satellite is to revolve round the earth in a circle of radius 8000 km. The speed at which this satellite be projected into an orbit, will beA satellite is to revolve round the earth in a circle of radius 8000 km. The speed at which this satellite be projected into an orbit, will be

(a)       3 km/s                                   (b)   16 km/s

(c)       7.15km/s                       (d)   8 km/s

Answer: c

(5)

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