GK
BIG BANG THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How long does it take light from our Sun to reach Earth?
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3 seconds
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8 minutes
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57 hours
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1 year
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Explanation:
Detailed explanation-1: -Light travels at a speed of 300, 000 kms−1 and the distance between Earth and the sun is 150 million km. Thus it takes nearly 8 minutes for light from the sun to reach Earth.
Detailed explanation-2: -It means that the sunlight takes exactly 8.3 minutes to reach to the surface of the earth. It is calculated by dividing the distance of the earth from the sun with the speed of the light.
Detailed explanation-3: -Remember, the Earth follows an elliptical orbit around the Sun, ranging from 147 million to 152 million km. At its closest point, sunlight only takes 490 seconds to reach Earth. And then at the most distant point, it takes 507 seconds for sunlight to make the journey.
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