Question

Term ‘Visible Horizon’ in astronomy is defined as:-
A) The circle of contact of the earth and the cone of visual rays passing through the meridian of the place. B) The circle of contact of the earth and the cone of visual rays not passing through the meridian of the place. C) The circle of contact of the earth and the cone of visual rays passing through the point of observation. D) The circle of contact of the earth and the cone of visual rays not passing through the point of observation.

Answer 1

Answer:

Horizon, in astronomy, boundary where the sky seems to meet the ground or sea. (In astronomy it is defined as the intersection on the celestial sphere of a plane perpendicular to a plumb line.) The higher the observer, the lower and more distant is his visible horizon.

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