Question

if a star is at a distance of 3 light years from the earth,the time taken by light to reach earth from the star is(given:1 light year=9.46×10¹²km)
(1) 1 year (2) 3 years (3)3.15 years
(4)9.46 years
Note:Answer with all steps​

Answer 1

Answer:

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Explanation:

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