Q. Which among the following units used to measure the distance (in space) is highest?
Answer: Parsec
Notes: Distances measured (among abovegiven options) in ascending order:
1 Nautical mile = 1 minute of latitude= 1852 Meters.
1 Astronomical Unit = Average distance between the Earth and the Sun = 150 Million kilometers.
1 Light Year = Distance travelled by light in a year = 63,241.1 Astronomical Units.
1 Parsec (Pc) = 3.26 Light years.

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