How much time does it take for the Sun's rays to reach Earth?
8 minutes
4 hours
2 days
1 light year
Sunlight travels with the speed of light( 3∗106 m/s) which approximately takes 8 min 20 seconds to reach the Earth.
(a) How much time does light take to reach us from the sun?
(b) How much time does light take to reach us from the next nearest star 'Proxima centauri'?