Question

Light travels with speed of 3×10,8 m/sec. How long does the light take from the sun which is 15×10,11m away

Answer 1

Speed = distance / time

= 3*10^8 = 15*10^11 / time

= time = 15 * 10^11 / 3*10^8

time = 5 * 10^3 sec.

Answer 2

Heya !!

Here is the answer.

Given :
Speed of light = 3 × 10^8 m/s
And, distance from the sun = 1.5 × 10^12 m

And, we know that time = distance/time.

So, time taken by light to reach on Earth
$= \frac{1.5 \times {10}^{12} }{3 \times {10}^{8} } \\ = 0.5 \times {10}^{4}$
= 5 × 10³ s.

Hope You Got It