Question
Physics Question on Units and measurement
Light year is
A
light emitted by the sun in one year
B
the time taken by light to travel from sun to earth
C
the distance travelled by light in free space in one year
D
the time taken by earth to go once around the sun
Answer
the distance travelled by light in free space in one year
Explanation
Solution
Light year is the distance travelled by light in free space in one year.