Question

Question:-

● The part of the eyes refracts light entering the light from external objects -

1. Iris
2. Cornea
3. Both 1 and 2
4. None of these

□ Explanation needed! ​

Answer 1

Answer:

cornea

Explanation:

CORNEA

The eye is enclosed by a tough white sac, the sclera. The cornea is the transparent window in this white sac which allows the objects you are looking at to be carried in the form of light waves into the interior of the eye.

The surface of the cornea is where light begins its journey into the eye. The cornea’s mission is to gather and focus visual images. Because it is out front, like the windshield of an automobile, it is subject to considerable abuse from the outside world.

The cornea is masterfully engineered so that only the most expensive manmade lenses can match its precision. The smoothness and shape of the cornea, as well as its transparency, is vitally important to the proper functioning of the eye. If either the surface smoothness or the clarity of the cornea suffers, vision will be disrupted.

Answer 2

Answer:

cornea

Explanation:

It is the transparent part at the front of eye that refracts light entering the eye onto the lens.

Answer 3

Answer:

$\huge{\boxed{\bold{\mathsf{ Cornea }}}}$

Explanation:

$\bigstar$Cornea refracts most of the light that enters in the eye.

$\bigstar$When light get reflected from the surface of any object and enters the eyeball then , it travels through a curved transparent tissue that is Cornea and it gets refracted by its surface.

$\bigstar$Thus, this refracted light then enters the lens present behind it (cornea)

$\bigstar$ While, the iris is located at the front of lens & ciliary muscles , and behind the Cornea

$\bigstar$ So, it does'nt refract much light as compared to Cornea due to their positions.

$\bigstar$ Refraction is necessary for the sharpening of the image formed on retina.