Light
Year
A Unit
of distance for expressing Astronomical distance.
It is
the distance traveled by light in one year.
We know
that
\[Velocity = \frac{Distance}{Time}\]
\[c=\frac{d}{t}\]
\[d= {c}.{t}\]
Where \[c= 3X10^{8}. meter/sec\]
\[t = 365 days X 24 hours X 60 minutes X 60 seconds\]
⇒ \[d=3X10^{8}X365 days X 24 hours X 60 minutes X 60 seconds\]
\[d = 9.68 X10^{15}. meter\]
\[d = 9.68 X 10^{12}. Kilometer\]