Question

15. Define light year.​

Answer 1

Answer:

The distance which the light travels in an year is called as light year.

Answer 2

♦ Light year is the distance travelled by light in one year.

• It is an Astronomical Unit.
• It is used to measure distance between two planets, or two stars.
• It is 9.46 × 10¹² km.
• Its symbol is ly.

$<marquee>MARK BRAINLIEST$