A) \[{{10}^{12}}km\]
B) \[{{10}^{15}}m\]
C) \[{{10}^{16}}m\]
D) \[{{10}^{14}}km\]
Correct Answer: A
Solution :
A light-year is a unit of length used in astronomy, though it is sometimes mistaken for a unit of time, often used when expressing distances to stars and other distances on a galactic scale. In S.I. units, 1 Light Year is equal to \[9.4607\times {{10}^{15}}\]meters or \[9.4605284\times {{10}^{12}}\]kilometers.
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