1 light year is equivalent to

Explanation:

The distance travelled by light in vacuum in one year is called a light year. It is denoted by Iy.

1/y = speed of light in vacuum x 1 year

= 3 x 10⁸ x 365 x 24 x 60 x 60

= 3 x 10⁸ x 365 x 24 x 60 x 60

= 9.46 x 10¹⁵m

Final Answer:

Hence, option (C) is correct.  (9.46 x 10¹⁵m)