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Physics · 2016
JEE Main 2016 · 2016-04-03 Offline · Q6
A satellite is revolving in a circular orbit at a height ' h ' from the earth's surface (radius of earth R; h ≪ R). The minimum increase in its…
A satellite is revolving in a circular orbit at a height ' $\displaystyle h$ ' from the earth's surface (radius of earth $\displaystyle R ; h \ll R)$. 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.)
Official answer
(4)
$\displaystyle \sqrt{g R}(\sqrt{2}-1)$
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