GENERAL KNOWLEDGE

Detailed explanation-1: -Light travels at a speed of around 3, 00, 000 km s−1 in space. The Earth is 1.5 million km away from the Sun. So, it takes about 8 minutes and 20 seconds for the sunlight to reach Earth.

Detailed explanation-2: -The Sun is 93 million miles away, so sunlight takes 8 and 1/3 minutes to get to us. Not much changes about the Sun in so short a time, but it still means that when you look at the Sun, you see it as it was 8 minutes ago.

Detailed explanation-3: -It takes time 8 min for light to reach from sun to the earth surface. If speed of light is taken to be 3×108 m s−1, find the order of magnitude of distance from the sun to the earth in km. Q. The average distance between Earth and the Sun is 1.496×108 km and the speed of light coming from the Sun is 3×108 m/s.

Detailed explanation-4: -Using Light Years to Measure Distances in Space If you could travel at the speed of light, it would take you about eight minutes to travel to the sun. If you were to travel at the speed of light to the next closest star, Proxima Centauri, it would take you 4.2 years!