Question

What is the black circular aperture in our eyes and why does it appear black?

• A. The aperture is known as iris and it appears black as no light is reflected from it.
• B. The aperture is known as pupil and it appears black as all light is reflected from it.
• C. The aperture is known as iris and it appears black as all light is reflected from it.
• D. The aperture is known as pupil and it appears black as no light is reflected from it.

Answer 1

The correct option is D The aperture is known as pupil and it appears black as no light is reflected from it.

A small aperture is present in the centre of iris. The size of aperture is variable and self-adjustable. This aperture is known as pupil. The pupil appears black as no light is reflected from it.