For a particle projected m a transverse ...

For a particle projected m a transverse direction from a height h above earth's surface, find the minimwn initial velocity so that it grazes the surface of earth such that path of this particle would be an ellipse with centre of earth as the farther focus, point of projection as the apogee and a diametrically opposite point on earth as perigee

`sqrt(2GM_e (R/r(R+r)))`

`sqrt(2GM_e (R/R(R+r)))`

`sqrt(2GM_e (r/R(R+r)))`

`sqrt(2GM_e (R/r^2))`

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