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प्रश्न
The change in the focal length of an eye lens in human beings is caused by the action of ______.
पर्याय
optic nerves
ciliary muscles
retina
cornea
उत्तर
The change in the focal length of an eye lens in human beings is caused by the action of ciliary muscles.
Explanation:
The curvature of the eye lens changes as the ciliary muscles relax or contract. The curvature of the eye lens alters the focal length of the eyes. As a result, the activity of ciliary muscles causes a change in the focal length of an eye lens.
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संबंधित प्रश्न
A person got his eyes tested by an optician. The prescription for the spectacle lenses to be made reads :
Left eye : +2.50 D
Right eye : +2.00 D
Which lens bends the light rays more strongly?
Name the part of our eyes which helps us to focus near and distant objects in quick succession.
What changes take place in the shape of eye-lens:
when the eye is focused on a distant object?
A person walking in a dark corridor enters into a brightly lit room:
State the effect on the pupil of the eye.
Answer the following question.
Trace the sequence of events Whichoccur when a bright light is focused on your eyes.
State the Function:
Iris
Name the capacity of the eye lens to change its focal length as per need.
Write the name.
The fleshy screen behind cornea.
Explain the role of the part of human eye responsible for power of accommodation of human eye.
Give reason:
Blind spot is considered as 'area of no vision'.
