If velocity of light is taken as the unit of velocity and an year is taken as the unit of time, what is the unit of length? What is it called?

Answer

`9.46xx10^(15)m ; one light year`

Explanation

As velocity ` = (distance)/(time)`
:. Distance = velocity xx time
`= (3xx10^8ms^(-1))xx(365xx24xx60xx60)s`
`=9.46xx10^(15)m`
it is called one light year.