Question

How do you calculate one light year in kilometers?​

Answer 1

Answer:

1 light year= 9.46× 10¹² km

Explanation:

1 light year is distance traveled by light in one year.

To find distance we require speed and time,

we know, speed of light is 3 × 10⁵ km/s

and time is 1 year= 365×24×60×60 s

ie distance traveled in one year is speed in to time

distance= 3× 10⁵× 365×24×60×60

distance= 94608000× 10⁵

distance= 9.46× 10¹² km

1 light year= 9.46× 10¹² km