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Why do we feel sensation when anything enters our eye Why sky appear blue

Why do we feel sensation when anything  enters our eye
 
 
 
Why sky appear blue

Grade:10

2 Answers

Arun
25750 Points
4 years ago
Blue light is scattered in all directions by the tiny molecules of air in Earth's atmosphere. Blue is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time. ... Also, the surface of Earth has reflected and scattered the light.
Vikas TU
14149 Points
4 years ago
Dear student 
When we put finger in our eyes, the dust present in it irritate the eye. And also we feel irritated when we see an object very close to us (less than 25cm). 
So there is irritation in eye. 
Good Luck 

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