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Worksheetsdefects in human eye
Total questions: 8
Worksheet time: 3mins
Name
Class
Date
1.
This defect is caused due to elongation of eye ball.
(a)
2.
Convex lens is used to correct this defect.
(a)
3.
bifocal lens is used to correct this defect.
a)
Myopia
b)
hypermetropia
c)
cataract
d)
presbyopia
4.
this defect is also known as old age defect.
(a)
5.
this problem arises due to foggy or cloudy lens .
a)
presbyopia
b)
myopia
c)
cataract
d)
hypermetropia
6.
which colour bends the most on refraction through a triangular prism?
a)
red
b)
blue
c)
green
d)
violet
7.
This phenomenon is responsible for rainbow formation.
a)
refraction
b)
dispersion
c)
internal reflection
d)
all of these
8.
angle of deviation in a triangular prism is angle between
a)
incident ray and refracted ray.
b)
refracted ray and emergent ray.
c)
extended incident and emergent ray
d)
none of these
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