Vision and Hearing Physiology Quiz | Vision and Hearing Physiology Objective Type Questions and Answers

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Questions
21 Lenses to be used by a person who cannot see distant objects are:
A Concave
B Convex
C Plane
D Bifocal

Answer: Concave
22 Lenses used by the persons who cannot see objects of nearby are:
A Concave
B Convex
C Plane
D Bifocal

Answer: Convex
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23 Common eye defect that develops in old age is:
A Glaucoma
B Presbyopia
C Myopia
D Astgmatism

Answer: Presbyopia
24 Common defect developing in the eyes of persons of old age is:
A Hypermetropia
B Myopia
C Astigmatism
D Glaucoma

Answer: Hypermetropia
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

Answer: Carrots
28 Focal length of lens is controlled by:
A Pupil
B Vitreous humour
C Ciliary muscles
D Cornea

Answer: Ciliary muscles
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

Answer: Retinal cells
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

Answer: Visual voilet
33 Rhodopsin is also called:
A Visual purple
B Visual voilet
C Visual red
D None of these

Answer: Visual purple
34 Night blindness is due to the deficiency of:
A Rhodopsin
B Iodopsin
C Vitamin-A
D None of these

Answer: Vitamin-A
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

Answer: Diurnal animals
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

Answer: Iodopsin
40 Visual pigment in the rods of our eyes is:
A Rhodopsin
B Iodopsin
C Both (a) & (b)
D None of these

Answer: Rhodopsin

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