Question

. It takes time 8 min for light to reach from the sun to
the earth surface. If speed of light is taken to be
3 x 10⁸ m s-1, find the distance from the sun to the
earth in km.
Ans. 1.44 x 108 km​

Answer 1

Speed of light = 3 × 10⁸

Time = 8 min = 480 sec

We know

Distance = Speed × Time

→ 3 × 10⁸ × 480

→ 1.44 × 10⁸ m