Question

what is light year ? express it values in km

Answer 1

a distance light travel in one year is known as light year
9.4607*10¹² km

Answer 2

Light year is the distance travelled by light in one year.We generally use the term light year to express large distances and one light year is nearly 3×10 raised to 8 m/sec.One light year therefore equals nearly 9.46×10raised to 12 km.