UPSC Civil Service Exam Questions

Q1: The local sidereal time (LST) is always

A ahead of the local mean time (LMT) by about 2 hours per month

B behind LMT by about 2 hours per month

C ahead of LMT by about 4 hours per month

D equal to LMT

ANS:A - ahead of the local mean time (LMT) by about 2 hours per month

It's ahead 4 minutes per day than in one month.
30*4= 120 minute convert it in hr.
2 hrs per month.



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