Question

1 Light year = _____ m

1) 9.46 x 10¹²

2) 9.46 x 10¹⁵

3) 9.46 x 10¹⁰ 

4) 9.46 x 10¹³

Answer 1

Correct option is 2) 9.46 x 10¹⁵

The light-year is a unit of length used to express astronomical distances and is equivalent to about 9.46 trillion kilometres or 9.46 x 10¹² km or 9.46 x 10¹⁵ m.