Q.

How much time does it take for light to cover the distance between the sun and the earth?


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a

8 minutes 20 seconds

b

8 minutes 30 seconds

c

80 minutes 20 seconds

d

1 minute 28 seconds 

answer is A.

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Detailed Solution

It takes 8 minutes 20 seconds for light to cover the distance between the sun and the earth.
The speed of light is 300,000 km/s approximately and the distance between the earth and the sun is 150,000,000 km,
According to the formula Time=DistanceSpeed
We get 150,000,000300,000=8.20
We get approximately 8 minutes and 20 seconds. The sun is the star that is closest to the earth. It is a luminous body that generates light by producing heat and energy through the process of nuclear fusion.
  
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