# A satellite is revolving in a circular orbit at a height ‘Ii’ from the earth’s surface

A satellite is revolving in a circular orbit at a height *‘Ii’ *from the earth’s surface (radius of earth *R ; ft«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 abnosphere.)

- √2gR
- √gR
- √gR/2
- √gR(√2 – 1)