NDA2019General AbilityGeneral ScienceActual
Light year is a unit of measurement of
Options
- Avery large distances
- Btime interval in years
- Camount of light received on earth in a year
- Dmass of atoms
Correct answer
A. very large distances
Step-by-step solution
A light-year is a unit of very large distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers ( km ) each second. So in one year, it can travel about 10 trillion km.