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प्रश्न
Name the following:
The focal length of the lens is altered by the contraction of which type of muscles.
उत्तर
Ciliary muscles
APPEARS IN
संबंधित प्रश्न
Compare the following: Choroid and retina
How is the amount of light entering the eye controlled?
The size of the pupil of the eye is adjusted by:
(a) cornea
(b) ciliary muscles
(c) optic nerve
(d) iris
Suggest how your irises help to protect the retinas of your eyes from damage by bright light.
When is a person said to have developed cataract in his eye? How is the vision of a person having cataract restored?
How much is our field of view:
with one eye open?
Differentiate between members of the following pair with reference to what is asked in bracket.
Rod and cone cells (pigment contained)
Mention, where in living organism is the following located and state their main function:
Fovea centralis
Given below is certain structure. Write against them its functional acivity.
retina and ……………………….
Choose the correct answer :
The rods and cones of a vertebrate retina function is to _________
What happens to the image distance in the normal human eye when we decrease the distance of an object, say 10 m to 1 m? Justify your answer.
What is a Lachrymal gland?
State the Function:
Choroid coat in the eye
Choose the Odd One Out:
Write the name.
The screen with light sensitive cells in human eye.
Match the following
| 1. | Conjunctiva | a. | Coloured part of eye |
| 2. | Cornea | b. | Photosensitive layer |
| 3. | Iris | c. | Refraction |
| 4. | Retina | d. | Protection |
The change in the focal length of an eye lens in human beings is caused by the action of ______.
An aperture that controls the passage of light into the eye is ______.
