how far from earth we can see earth as a whole elliptical?{we can clearly see the earth


Joshi sir comment


for getting the complete vision we should draw tangents at the extreme of major and minor axis of the earth, this will give a point of intersection for which height from centre of earth will be R√2 so height from earth surface will be R√2 - R = R(√2-1)

here R is used for radius of earth

This is approximate calculation only 

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