Quiz 03 – APS Physics

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Passing percentage = 60%

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Human Eye

1 / 10

The human eye can focus objects at different distances by adjusting the focal length of the eye lens. This phenomenon is known as

Cataract

Accommodation

Refraction

Dispersion of eye lens

2 / 10

Arun is standing at the bus stop. He can read his diary comfortably but cannot read the route number of the bus if it is beyond 5m. Identify the defect of vision.

Myopia

Presbyopia

Hypermetropia

Cataract

3 / 10

A person having presbyopia uses a bifocal lens to restore proper vision. Which part of this lens is convex and which part is concave?

Upper part : Convex ; Lower part : Concave

Both parts convex

Both parts concave

Upper part : Concave ; Lower part : Convex

4 / 10

The far point of a myopic person is 80 cm in front of the eye. Which one of the following statements is correct about the myopic eye.

near point is more than 25 cm and far point is less than infinity.

near point is 25 cm and for point is less than infinity.

near point is less than 25 cm and far point is more than infinity.

near point is 25 cm and the far point is infinity.

5 / 10

The image shows the ray diagram of a defected eye.

Which lens should be used for the correction of the defect of the eye?

glass slab

bifocal lens

Concave lens

convex lens

6 / 10

A person is seeing an object closer to his eyes. What changes in his eyes will take place?

the light entering in the eye will be more

the ciliary muscles will contract

the focal length of eye lens will increase

the pupil size will expand

7 / 10

What are the possible causes of myopic defect of vision?

Elongation of the eyeball and excessive curvature of eye lens

Elongation of the eyeball and long focal length of eye lens

Shortening of eyeball and excessive curvature of eye lens

Eye ball is smaller than normal and short focal length of eye lens

8 / 10

In which part of the human eye the image of an object is formed?

cornea

retina

pupil

iris

9 / 10

A person gets out in the sunlight from a dark room. How does his pupil regulate and controls the light entering in the eye?

the size of pupil will remain same, but more light will enter the eye

the size of pupil will decrease, and less light will enter the eye

the size of pupil will decrease, and more light will enter the eye

the size of pupil will remain same, but less light will enter the eye

10 / 10

A person went for a medical check-up and found that the curvature of his eye lens is increasing. Which defects he is likely to suffer from?

cataract

presbyopia

myopia

hypermetropia

The average score is 55%

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