Question

If the velocity of light in vacuum is taken as the unit of velocity and
one year as the unit of time, then what must be the unit of length ?
What it is called ?
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Answer 1

Answer:

$\huge{\boxed{\boxed{\underline{\rm{\pink{AnSwEr}}}}}}$

Explanation:

Unit of length = unit of velocity × X unit of time

= 3 × 10^8 m/s × 1year

= 3 ×10^8s ×365 ×24×60×60s

= 9.46×10^15 m

This unit of length is called 1 light year.