On which of the following principle does the human eye work?

Question

Question

This question was previously asked in

RRB JE CBT I - (Held On: 1 June 2019 Shift 1)

Answer 1

The correct option is Refraction of light.

Key Points

The eye of a human being is like a camera
So basically, light rays that are deflected from or by distant objects land on the retina after they pass through various mediums like the cornea, crystalline lens, aqueous humor, the lens, and vitreous humor.
The concept here though is that as the light rays move through the various mediums, they experience refraction of light.
The bending of light rays in the denser medium is known as Refraction.
When a light ray travels from a lighter to a denser medium, the light ray bends towards the normal.
When a light ray travels from a denser to a lighter medium the light ray bends away from the normal.