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GTHS ADIMALY
PHYSICS UNIT TEST 6-BEENA KA
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Name of the student
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1. choose the correct one)
1 point
In myopic eye the near Point will be greater than 25 cm
In myopic eye the far point will be in the infinity
In Hypermetropia eye the near Point will be greater than 25 cm
In Hyper metropia eye the near point will be less than 25 cm
Clear selection
2.Write the name of defect of vision in which the person is able to see distant object distinctly but cannot see nearby objects clearly
1 point
Myopia
Hypermetropia or longsigtedness
Near sightedness
Clear selection
3.Which are the phenomena of light involved in the the formation of a rainbow
1 point
scattering ,reflection, total internal reflection
reflection ,refraction,dispersion,total internal reflection
total internal reflection,dispersion,refraction
refraction,dispersion,reflection
Clear selection
4.Splitting of light into constituent colours is called
1 point
refraction
scattering
reflection
dispersion
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5.How many times light undergoes total internal reflection through a rainbow
1 point
2
3
1
4
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6.Due to persistence of vision an image remains in the eye of the retina for
1 point
625s
0.0625s
0.696
6295s
Clear selection
7.Which colour undergo the least deviation
1 point
red
orange
blue
green
violet
Clear selection
8.identify the defect.By using which lens this defect can be corrected?
1 point
Myopia,concave lens
Hypermetropia,convex lens
Myopia,convex lens
Hypermetropia,concave lens
presbiopia,convex lens
Clear selection
9.Illumination of light through colloidal particles is called
1 point
scattering
reflection
tyndal effect
refraction
Option 5
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10.Power of a lens is +1.5,which type of lens is this?,What is the focal length of the lens
1 point
convex,66.67
concave,.667
convex,.667
concave,66.67
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