Home
Class 12
BIOLOGY
Light rays entering the eye is controlle...

Light rays entering the eye is controlled by

A

pupil

B

iris

C

cornea

D

lens

Text Solution

AI Generated Solution

The correct Answer is:
To answer the question "Light rays entering the eye is controlled by," we will analyze the options provided and explain the role of each part of the eye mentioned. ### Step-by-Step Solution: 1. **Understanding the Options**: - The options given are: Pupil, Iris, Cornea, and Lens. 2. **Analyzing the Iris**: - The iris is the colored part of the eye. Its primary function is to control the size of the pupil. It does this by contracting or dilating, which in turn regulates the amount of light that enters the eye. 3. **Analyzing the Pupil**: - The pupil is the opening in the center of the iris. It does not actively control light but is the passage through which light enters the eye. The size of the pupil is controlled by the iris. 4. **Analyzing the Cornea**: - The cornea is the transparent front part of the eye that helps to focus light. It bends (refracts) the light rays as they enter the eye, but it does not control the amount of light entering. 5. **Analyzing the Lens**: - The lens is a transparent, biconvex structure that focuses light onto the retina. While it plays a crucial role in focusing light, it does not control the amount of light entering the eye. 6. **Conclusion**: - The part that primarily controls the amount of light entering the eye is the **iris**, as it adjusts the size of the pupil. Therefore, the correct answer to the question is **Iris**. ### Final Answer: The light rays entering the eye are controlled by the **Iris**. ---
To answer the question "Light rays entering the eye is controlled by," we will analyze the options provided and explain the role of each part of the eye mentioned. ### Step-by-Step Solution: 1. **Understanding the Options**: - The options given are: Pupil, Iris, Cornea, and Lens. 2. **Analyzing the Iris**: ...
Promotional Banner

Similar Questions

Explore conceptually related problems

The coloured part of the eye which controls the amount of light of light entering the eye is a modified part of the

When light rays enter the eye, most of the refraction occurs at the

Visual reflex involves control and coordination movements of head and eyes to fix and focus on an object.Such reflexes is controlled by

Which of the following gives the correct path for light rays entering the human eye?

A light ray enters from medium A to medium B as shown in Figure. The refractive index of medium A relative to B will be

A ray of light is incident on a glass sphere of refractive index 3/2. What should be the angle of incidence so that the ray which enters the sphere does not come out of the sphere ?

Explain how the intensity and penetrating power of X-ray are controlled in a Coolidge X-ray tube.

The light falling on the mirror is called ____ ray.

Figures shows a plane mirror on which a light ray is incident, if the incident light ray is turned by 10^(@) and the mirror by 20^(@) as shown , find the angle turned by the reflected ray.