Q. 18 VSA4.5( 8 Votes )
Which of the foll A. Second
D. Light year
Second – It is a unit of time.
Parsec – It is a unit of distance which is equal to 3.26 light year.
Year – It is a unit of time which is equal to 31536000 seconds.
Light year- It is a unit of distance. It is defined as distance covered by light in 1 year. i.e.
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