If an artificial satellite is moving in a circular orbit around the earth with a speed equal to one third of the escape velocity from the earth, the height of the satellite from the centre of the earth is:

Q: If an artificial satellite is moving in a circular orbit around the earth with a speed equal to one third of the escape velocity from the earth, the height of the satellite from the centre of the earth is: (R=radius of earth)

(a) 2.5 R

(b) 3.5 R

(c) 4.5 R

(d) 6.0 R

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Ans: (c)