Sidereal Day
is the time for the Earth to rotate about its axis so that sun appears in the same position in the sky
is the time taken by the Earth to complete one rotation about its axis with respect to the distant star
is 4 minutes shorter than the solar day
Both B and C
As we have learnt,
Sidereal day -
it is the time taken by earth to complete one rotation about it's axis with respect to distant star.
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