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प्रश्न
How does the eye adjust itself to deal with light of varying intensity?
उत्तर
The iris regulates the amount of light entering the human eye by automatically adjusting the size of the pupil according to the intensity of light that the eye receives. If the intensity of light is high, the iris contracts the pupil so as to reduce the amount of light entering the eye. If the intensity of light is low, the pupil expands to allow more light to enter the eye.
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संबंधित प्रश्न
List the parts of the human eye that control the amount of light entering into it. Explain how they perform this function.
Myopia is an example of ______.
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?
What is the name of:
the curved, transparent front surface of the eye?
How is the amount of light entering the eye controlled?
Give scientific reason:
One can sense colours only in bright light.
Name the following:
The pigmented circular area seen in the eye.
Vision defect that increases distance between the lens of the eye and retina of the eye is termed as myopia.
Describe the parts in the external structure of the eye.
With reference to human eye answer the question that follow:
Name the part of the eye associated with the regulation of the size of pupil.
