Question

Fill in the blank by a suitable conversion of unit:

1 m = ______ ly

Answer 1

1 m = 1.057 × 10⁻¹⁶ ly

Explanation:

A 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 × 10⁻¹⁶ ly