Eye General Knowledge(GK) Quiz | Eye Objective Type Questions & Answers

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Questions
21 Which of the following colors is least scattered by fog, dust of smoke?
A Violet
B Blue
C Yellow
D Red

Answer: Red
22 The light sensitive cell present on retina and is sensitive to the intensity of light is:
A Cones
B Both rods and cones
C None of these
D Rods

Answer: Rods
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23 The part of the eyes refracts light entering the eye from external objects?
A Lens
B Cornea
C Iris
D Pupil

Answer: Cornea
24 Condition in which image is formed behind retina is called
A Farsightedness
B Nearsightedness
C image defect
D blind spotting

Answer: Farsightedness
25 Greatest refraction of light is caused through
A sclerotic coat
B choroid coat
C iris
D pupil

Answer: sclerotic coat
26 Which of the following phenomena of light are involved in the formation of a rainbow?
A Reflection, refraction and dispersion
B Refraction, dispersion and total internal reflection
C Refraction, dispersion and internal reflection
D Dispersion, scattering and total internal reflection

Answer: Refraction, dispersion and internal reflection
27 The bluish colour of water in deep sea is due to
A the presence of algae and other plants found in water
B reflection of sky in water
C scattering of light
D absorption of light by the sea

Answer: scattering of light
28 Function of eyelids includes
A dust particles are wiped off
B tears are spread over eye
C dust particles are cleared off
D all of these

Answer: All of these
29 Twinkling of stars is due to atmospheric
A dispersion of light by water droplets
B refraction of light by different layers of varying refractive indices
C scattering of light by dust particles
D internal reflection of light by clouds

Answer: refraction of light by different layers of varying refractive indices
30 Internal reflection of light is prevented through the
A sclerotic coat
B choroid coat
C iris
D pupil

Answer: choroid coat
31 Condition in which image is formed in front of retina is called
A Farsightedness
B Defect of vision
C nearsightedness
D blind spotting

Answer: Nearsightedness
32 Runny nose and crying may be outcomes of
A hay fever
B downs syndrome
C excess tears
D stress or depression

Answer: Excess tears
33 The persistence of vision for human eye is
A 1/10th of a second
B 1/16th of a second
C 1/6th of the second
D 1/18th of a second

Answer: 1/16th of a second
34 Light enters eye through a transparent membrane known as
A cornea
B pupil
C retina
D iris

Answer: Cornea
35 Variation of focal length to form a sharp image on retina is called
A accommodation
B aperture
C retina control
D sutter

Answer: Accommodation
36 Inability of eye to see objects clearly is called
A clarity of image
B Defect of vision
C blur image
D small image

Answer: Defect of vision
37 In human eye, image is formed
A behind retina
B in front of retina
C on retina
D in between lens and retina

Answer: On retina
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