Question

The light of some stars takes millions of years to reach on the Earth. This indicates that the stars are far away from the earth. The sun appears to be very closer to the earth than the other stars. In how much time does sunlight reaches on Earth?
7 Minutes
5 Minutes
8 Minutes
9 Minutes ​

Answer 1

Answer:

9 Minutes

Explanation:

because sun little far away from earth

Answer 2

Answer:

The time taken by the sunlight to reach the surface of the earth is found to be: 8.3 or around 8 minutes, i.e., Option (C)

Explanation:

We know that the expression for finding out the speed is:
$speed=\frac{distance}{time}$

which gives us the time as:

$time=\frac{distance}{speed}$

Now, the distance between the Earth and the Sun is: 1,49,59,78,70,000 meters

And the speed with which light travels in air is: $3\times 10^8$ m/s

Hence, the time taken by the sunlight to reach the surface of the earth will be as follows:

$t=\frac{1,49,59,78,70,000}{3\times 10^8}$

simplifying which, we get:

$t\approx 498.6595666$ seconds

Converting into minutes, we get:

$t\approx \frac{498.6595666}{60}\approx8.310992$

Thus, it takes around 8.3 minutes for the sunlight to reach the surface of the earth.