The solar eclipse achieves totality only in the limited geographical regions because
Options
(a)the earth is not a smooth flat surface, but has elevations and depressions
(b)the size of the shadow of the moon on the earth is small compared to the cross section of the earth
(c)the trajectories of the earth around the sun and the moon around the earth are not perfect circles
(d)sun rays can reach most of the peripheral regions of the shadow of the moon due to a atmospheric refraction
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