Why is the pupil of the human eye black?
Correct answer: C. The pupil is a hole that allows light to enter but the light is either absorbed or diffused within the eye before it can exit
- A. The pupil is made up of proteins that are pigmented to appear to give a black appearance
- B. The pupil can be of any color, not necessarily black
- C. The pupil is a hole that allows light to enter but the light is either absorbed or diffused within the eye before it can exit
- D. The vitreous humor behind the pupil is black in color which gives the transparent pupil a black appearance
Explanation
The pupil is a hole located in the center of the iris of the eye that allows light to strike the retina. It appears black because light rays entering the pupil are either absorbed by the tissues inside the eye directly, or absorbed after diffuse reflections within the eye that mostly miss exiting the narrow pupil.
Last updated
Related questions
48 competitors entered the men's 100 metres freestyle event at this year's Muscan Swimming Championships. They were divided randomly into 6 heats, with the fastest 16 qualifying for the semi-finals.These are the results of the 6 heats.From which heat was there only one qualifier for the semi-finals?
A ballet dancer of mass 80 kg and a wingspan of 1m is executing a spin. She then folds her arms and brings them to within 20cm from the central axis of her body. If she was initially making 3 rotations per second, how many does she make now?
A ballet dancer of mass 80 kg and a wingspan of 80cm is executing a spin. She then folds her arms and brings them to within 20 cm from the central axis of her body. If she was initially making 3 rotations per second, how many does she make now?
A bar magnet and a solenoid are kept beside each other. In which of the following cases current will not be produced?
A bar magnet and a solenoid are kept beside each other. In which of the following cases current will not be produced?