What is the distance of the star (in km) from which light takes to reach the earth? The speed of light, is .
Step 1: Given information
Time is taken by light to reach earth,
By converting it into seconds we get,
The speed of light,
Step 2: Finding the distance of the star
By substituting the given values we get
Therefore, the star's distance (in km) from which light takes to reach the earth will be .