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 increases 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.)

A satellite is revolving in a circular orbit at a height .h from the e

1.	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 increases 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.)
Answer» `SQRT(GR)(sqrt(2)-1)` `sqrt(2gR)` `sqrt(gR)` `sqrt(gR/2)` ANSWER :A