The orbital velocity of an artificial satellite in a circular orbit just above the earth’s surface is v. For a satellite orbiting at an altitude of half of the earth’s radius, the orbital velocity is
(a) 3/2 v (b) √(3/2) v
(c) √(2/3) v (d) 2/3 v
Answer: c
(6)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)