Question

The difference in the lengths of a mean solar day and a sidereal day is about

• A. 1 min
• B. 4 min
• C. 15 min
• D. 56 min

Answer 1

Answer: (B)

4 min

Answer 2

Sideral day is about $4$ min shorter than our normal solar $24 \,h$ or one day. It is about $3$ min $56\, s$.