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Q.

[72]

Name the phenomena due to which the sun can be seen above the horizon almost 2 minutes before sunrise.


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a

Atmospheric refraction

b

Scattering of light

c

Dispersion of light

d

None 

answer is A.

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Detailed Solution

Atmospheric refraction is due to which we get light from the sun before sunrise.
The sun is seen several minutes before it actually rises in the morning and after it sets in the evening. This is due to atmospheric refraction. “The refraction of light due to the earth’s atmosphere is called atmospheric refraction”. It is the deviation of the straight line path of light while passing through different layers of the atmosphere. We get sunlight from the sun before the actual sunrise and this is due to atmospheric refraction.
 
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