A) time
B) distance
C) light
D) None of these
Correct Answer: B
Solution :
Ans. The light year is mostly used to express distances to stars and other distances on a galactic scale, especially in non-specialist and popular science publications. 1 light year\[~=9.4607\times {{10}^{12}}km\]or 1 light year \[=9.4607\times {{10}^{15}}km\]
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