Question:
A satellite is reolving in a circular orbit at a height ' $h$ ' from the earth's surface (radius of earth $\mathrm{R} ; \mathrm{h}<<\mathrm{R}$ ). The minimum increase in its orbital velocity required, so that the satellite could escape from the earth's gravitational field, is close to : (Neglect the effect of atmosphere).
Correct Option: 1
Solution:
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