Question

Fill in the blank by suitable conversion of unit: 

1 m =______ ly

Answer 1

1 m =1.057 × 10^-16 ly

Explanation:

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

1 ly = Speed of light × One year

= (3 × 10⁸ m/s) × (365 × 24 × 60 × 60 s)

= 9.46 × 10¹⁵ m

`:. 1m = 1/(9.46xx10^15) = 1.057 xx 10^(-16) ly`