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Physics - Human Eye

Avatto > > NTSE > > Practice Questions Ntse > > Physics > > Human Eye

6. Choose the correct alternative which matches second and third column with first column.

Column-I	Column-II	Column-III
Thickening of eye lens	Focal length increases	Ciliary muscles contract
Thining of eye lens	Focal length decreases	Ciliary muscles elongate

(NTSE Maharashtra, Stage-I, 2015-16)

A
(I)-(b)-(i), (II)-(a)-(ii)
B
(I)-(b)-(ii), (II)-a-(i)
C
(I)-(a)-(i), (II)-(b)-(ii)
D
(I)-(a)-(ii), (II)-(b)-(i)

Answer
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Option : A
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7. A human being has a horizontal field of view of about ________ with one eye and of about _________ with both eyes. (NTSE Madhya Pradesh, Stage-I, 2016-17)

A
120⁰, 150⁰
B
150⁰, 180⁰
C
180⁰, 210⁰
D
210⁰, 240⁰

Answer
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Option : B
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8. Splitting of white light into its component is called (NTSE Chandigarh, Stage-I, 2016-17)

A
Dispersion
B
Scattering
C
Total internal reflection
D
Spectrum

Answer
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Option : A
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9. At the traffic signals, red light is used for stop due to the reason that it can be seen from a distance. The phenomenon involved is known as (NTSE Chandigarh, Stage-I, 2015-16)

A
Reflection
B
Refraction
C
Dispersion
D
Scattering

Answer
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Option : D
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10. Most of the refraction takes place at ___ when light enter the eye. (NTSE Haryana, Stage-I, 2015-16)

A
Pupil
B
Iris
C
Outer surface of cornea
D
Crystalline lens

Answer
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Option : D
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