Light year is :
A. light emitted by the sum in one year
B. time taken by light to travel from the sum to the earth
C. the distance travelled by light in one year, in free space
D. the time taken by earth to go round the sun once
A. light emitted by the sum in one year
B. time taken by light to travel from the sum to the earth
C. the distance travelled by light in one year, in free space
D. the time taken by earth to go round the sun once
Correct Answer – c