Question

If velocity of light is taken as unit of velocity,one year as unit of time ,find the value of unit of length,what is this unit called?​

Answer 1

3*10^8m/s is the speed of light

Answer 2

Unit of length = unit of velocity xx unit of time

$= 3 \times {10}^{8} m/s \times 1year$

$= 3 \times {10}^{8}s \times 365 \times 24 \times 60 \times 60s$

$= 9.46 \times {10}^{15} m$

$This \: unit \: of \: length \: is \: called \: 1 \: light \: year$