The exact time taken by the earth for single rotation on its own axis is?
Correct answer: D. 23 hrs 56 minutes 4.09 sec
- A. 24 hrs
- B. 24 hrs 35 sec
- C. 23 hrs 50 minutes 7.2 sec
- D. 23 hrs 56 minutes 4.09 sec
Explanation
A complete rotation relative to the distant stars is a sidereal day, lasting approximately 23 hours, 56 minutes and 4 seconds. The familiar 24-hour day is the mean solar day, not the exact rotation period.
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