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प्रश्न
An aperture that controls the passage of light into the eye is ______.
पर्याय
Blind spot
Pupil
Yellow spot
Iris
उत्तर
An aperture that controls the passage of light into the eye is pupil.
Explanation:
The pupil constricts (gets narrower) to reduce the amount of light entering the eyes.
संबंधित प्रश्न
Write the function of the following part of the human eye: ciliary muscles
With the help of ciliary muscles the human eye can change its curvature and thus alter the focal length of its lens. State the changes that occur in the curvature and focal length of the eye lens while viewing (a) a distance object, (b) nearby objects.
The optical prescription for a pair of spectacles is :
Right eye : −3.50 D
Left eye : −4.00 D
Which lens has a greater focal length?
Where does the greatest degree of refraction of light occur in the eye?
Name two animals having eyes:
one the sides of the head.
Name two animals having eyes:
at the front of the head.
Given below is a set of five parts. Rewrite them in correct sequence.
Conjunctiva, retina, cornea, optic nerve, lens.
Draw a labeled diagram of the front view of human eye.
State the Function:
Ear drum
Choose the Odd One Out:
For a normal human eye the near point is at _______.
Name the capacity of the eye lens to change its focal length as per need.
The image of an object at an infinite distance is obtained in a real and erect form through a convex magnifying glass.
A student sitting on the last bench can read the letters written on the blackboard but is not able to read the letters written in his text book. Which of the following statements is correct?
Boojho while waving his hand very fast in front of his eyes, observes that his fingers appear blurred. What could be the reason for it?
Which part of the eye gets affected if someone is suffering from cataract? How is it treated?
Match the following:
| Column - I | Column - II |
| 1. Retina | a. Path way of light |
| 2. Pupil | b. Far point comes closer |
| 3. Ciliary muscles | c. near point moves away |
| 4. Myopia | d. Screen of the eye |
| 5. Hypermetropia | e. Power of accommodation |
Chris was watching the display of fireworks in the sky.
- Trace the path of the light rays using the following terms:
Fovea, Lens, Conjunctiva, Pupil, Cornea. - Name the nerve that carries the impulse for vision to the brain.
The thin, transparent extension of sclerotic layer found in front of the lens is ______.
With reference to human eye answer the question that follow:
Name the part of the eye associated with keeping the lens moist and protecting it from physical shock.
