Question

The human eye forms an image of an object at it's

• A. cornea
• B. iris
• C. pupil
• D. retina

Answer 1

The correct option is D

retina

Explanation for Correct answer:

• Option D: Retina

1. After passing through the pupil, light passes through a convex lens, which converges light rays at a point on the retina, a light-sensitive membrane.
2. As a result, an image of the object is formed on the retina.
3. The retina sends the image's message to the brain via nerve impulses.
4. The brain then interprets the data and gives the sensation of vision.

Explanation for incorrect answer(s):

• Option A: Cornea

1. Light from the object in front of us enters the eye via a thin layer known as the cornea.
2. This layer (cornea) has a higher refractive index than air and thus aids in light refraction into the eye.

• Option B: Iris

1. The iris of the eye regulates the size of the pupil.

• Option C: Pupil

1. The pupil of the eye is an opening in the center of the eye.
2. The pupil allows light to enter the inner portion of the eye.
3. This means that the pupil controls how much light enters our eyes.
4. When the light is bright, the pupil contracts; when the light is dim, the pupil expands, allowing more light to enter.

Thus, option D is the correct answer.