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Free download in PDF Vision and Hearing Physiology Objective Type Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
(21)
Lenses to be used by a person who cannot see distant objects are:
[A]
Concave
[B]
Convex
[C]
Plane
[D]
Bifocal
(22)
Lenses used by the persons who cannot see objects of nearby are:
[A]
Concave
[B]
Convex
[C]
Plane
[D]
Bifocal
(23)
Common eye defect that develops in old age is:
[A]
Glaucoma
[B]
Presbyopia
[C]
Myopia
[D]
Astgmatism
(24)
Common defect developing in the eyes of persons of old age is:
[A]
Hypermetropia
[B]
Myopia
[C]
Astigmatism
[D]
Glaucoma
(25)
Hypermetropia is a condition in human eyes in which the image is formed:
[A]
In front of retina and can be corrected by using convex lenses
[B]
In front of retina and can be corrected by using concave lenses
[C]
Behind retina and can be corrected by using convex lenses
[D]
Behind retina and can be corrected by using concavelenses
Answer: In front of retina and can be corrected by using convex lenses
(26)
Myopia is a defect in human eyes in which image is formed:
[A]
In front of retina and can be corrected by using concave lenses
[B]
In front of retina and can be corrected by using convex lenses
[C]
Behind the retina and can be corrected by using concave lenses
[D]
Behind retina and can be corrected by using convex lenses
Answer: In front of retina and can be corrected by using concave lenses
(27)
A person having deficiency of rhodopsin should take:
[A]
Tomatoes
[B]
Carrots
[C]
Radish
[D]
Guava
(28)
Focal length of lens is controlled by:
[A]
Pupil
[B]
Vitreous humour
[C]
Ciliary muscles
[D]
Cornea
(29)
Phtosensitive pigment is:
[A]
Different in different eyes
[B]
Similar in all eyes
[C]
Similar in all vertebrate eyes
[D]
Red in all eyes
Answer: Similar in all vertebrate eyes
(30)
Rhodopsin is a pigment found in:
[A]
Retinal cells
[B]
Cornea
[C]
Sclerotic
[D]
Choroid
31
If light source in front of our eye suddenly becomes bright, then:
[A]
We have a temporary blindness for 10-30 seconds during which pupil constricts
[B]
Focus of our eye changes
[C]
Retinal blood supply will be cut off
[D]
Vitrous humour will liquify
Answer: We have a temporary blindness for 10-30 seconds during which pupil constricts
32
Iodopsin is also called:
[A]
Visual purple
[B]
Visual voilet
[C]
Visual yellow
[D]
None of these
33
Rhodopsin is also called:
[A]
Visual purple
[B]
Visual voilet
[C]
Visual red
[D]
None of these
34
Night blindness is due to the deficiency of:
[A]
Rhodopsin
[B]
Iodopsin
[C]
Vitamin-A
[D]
None of these
35
The reformation of rhodopsin is an adaptation in:
[A]
Nocturnal animals
[B]
Diurnal animals
[C]
Both (a) & (b)
[D]
None of these
Answer: Nocturnal animals
36
The disappearance of rhodopsin is an adaptation in:
[A]
Nocturnal animals
[B]
Diurnal animals
[C]
Both (a) & (b)
[D]
None of these
37
In bright light rhodopsin:
[A]
Disappears or is reduced
[B]
Breaks into opsin and retinine
[C]
Is resynthesized
[D]
Breaks into scotopsin and iodopsin
Answer: Disappears or is reduced
38
Cone cells in our eyes are of three types for three basic colours namely:
[A]
Red, green and blue
[B]
White, orange and yellow
[C]
Red, orange and violet
[D]
None of these
Answer: Red, green and blue
39
Visual pigment in the cone cells of our eyes is:
[A]
Iodopsin
[B]
Rhodopsin
[C]
Both (a) & (b)
[D]
None of these
40
Visual pigment in the rods of our eyes is:
[A]
Rhodopsin
[B]
Iodopsin
[C]
Both (a) & (b)
[D]
None of these
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