Human Eye NDA Questions

NDA Physics

Human Eye MCQ Questions


7.
The adjustable opening in the center of the eye through which light enters is called
A.
Lens
B.
Cornea
C.
Pupil
D.
Retina
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ANSWER :
C. Pupil
8.
What is the main function of the lens in the eye?
A.
Protecting the eye
B.
Controlling the amount of light entering the eye
C.
Focusing light rays onto the retina
D.
Detecting light intensity
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ANSWER :
C. Focusing light rays onto the retina
9.
Which part of the eye contains the photoreceptors?
A.
Lens
B.
Cornea
C.
Retina
D.
Sclera
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ANSWER :
C. Retina
10.
What is the role of the aqueous humor?
A.
Nourishing the cornea and lens
B.
Protecting the retina
C.
Regulating light entry
D.
Maintaining the shape of the eye
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ANSWER :
A. Nourishing the cornea and lens
11.
Which condition is characterized by the clouding of the lens?
A.
Glaucoma
B.
Cataract
C.
Myopia
D.
Hyperopia
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ANSWER :
B. Cataract
12.
The colored part of the eye that regulates the size of the pupil is called
A.
Lens
B.
Cornea
C.
Iris
D.
Retina
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ANSWER :
C. Iris