Question

One light year is equal to _______
i) $365.65\times 24\times 60\times 60\times 3\times {10}^{8}m$
ii) $1\times 24\times 60\times 60\times 3\times {10}^{8}m$
iii) $360\times 24\times 60\times 60\times 3\times {10}^{8}m$

Answer 1

$\left(i\right)$

One light-year is defined as the distance covered by the light in the time span of one year.

1 light year= speed of light x total number of seconds in a year

$=365.65\times 24\times 60\times 60\times 3\times {10}^{8}meters$