66th B.P.S.C. (Pre) 2020
'Light-year' is a unit of :
aTime
bDistance✓ Correct
cSpeed of Light
dForce
eNone of the above/More than one of the above
Explanation
> The distance travelled by light in one year is called one light year (light year). Light year is a unit of astronomical distance, used to estimate the distance between stars and planets. > 1 light year = 9.46 × 1015 metres.
general-science