Question

How much time taken by light to reach earth from sun?

Answer 1

7 to 8 mins to reach the earth

Answer 2

• Distance of sun from earth is 150 million kilometres.

• Light travels with a speed of 3,00,00 kilometres per second.

• Time = Distance/Time

So we can calculate it in this way :

$time \: taken \: by \: light \: to \: reach \: us \\ = \frac{\cancel{150000000}}{\cancel{300000}}seconds \\ = 500 \: seconds \\ = 8.333... \: minutes$
That is Average 8 Minutes.
Hence, time taken by light to reach earth from the sun is average 8 minutes.