Taking one light year equal to 9.4 x 10^{ 15 } m and one day equal to 86400 seconds, what will be the speed of light in light year per day if the speed of light in m s^{ -1 }is 3 x 10^{ 8 } ?

## the speed of light = 0.00273790926 light year per day

Your friend have constructed the correct way to get the value but somehow he miscalculated it so follow the same procedure to get the precise above mention answer.

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