Question

What is the distance between earth and sun if light travels at 300000 km/s and takes 8 mins to reach the earth?

Answer 1

Let the distance between earth and sun be x

given:-

$speed \: of \: light = 3 \times {10}^{8} m {s}^{ - 1}$

$time = 8min = 8 \times 60s = 480s$

so, according to formula,

$distance = speed \times time$

$x = 3 \times {10}^{8} \times 480 \:$

$x = 1440 \times {10}^{8} m$

or,

$x = 1.44 \times {10}^{11} m$

Answer 2

Explanation:

We orbit the Sun at a distance of about 150 million km. Light moves at 300,000 kilometers/second. Divide these and you get 500 seconds, or 8 minutes and 20 seconds. This is an average number.