Ray Optics Test

Result

Ray Optics Test - 87

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Weekly Quiz Competition

Question 1
4 / -1

A person\'s near point is 50 cm and his far point is 3 m. Power of the lenses he requires for
(i) reading and
(ii) for seeing distant stars are

A
–2 D and 0.33 D

B
2 D and –0.33 D

C
–2 D and 3 D

D
2 D and –3 D

Solution
Question 2
4 / -1

Myopia is due to

A
Elongation of eye ball

B
Irregular change in focal length

C
Shortening of eye ball

D
Older age
Question 3
4 / -1

A person is suffering from the defect astigmatism. Its main reason is

A
Distance of the eye lens from retina is increased

B
Distance of the eye lens from retina is decreased

C
The cornea is not spherical

D
Power of accommodation of the eye is decreased
Question 4
4 / -1

When objects at different distances are seen by the eye, which of the following remains constant?

A
The focal length of the eye lens

B
The object distance from the eye lens

C
The radii of curvature of the eye lens

D
The image distance from the eye lens
Question 5
4 / -1

A person wears glasses of power – 2.0 D. The defect of the eye and the far point of the person without the glasses will be

A
Nearsighted, 50 cm

B
Farsighted, 50 cm

C
Nearsighted, 250 cm

D
Astigmatism, 50 cm

Solution
Question 6
4 / -1

Match the List I with the List II from the combinations shown

A
I–A; II–C; III–B; IV–D

B
I–B; II–D; III–C; N–A

C
I–D; II–B; III–A; N–C

D
I–D; II–A; III–C; N–B
Question 7
4 / -1

Near and far points of a human eye are

A
0 and 25 cm

B
0 and ∞

C
25 cm and 100 cm

D
25 cm and ∞
Question 8
4 / -1

Amount of light entering into the camera dependsupon

A
Focal length of the objective lens

B
Product of focal length and diameter of the objective lens

C
Distance of the object from camera

D
Aperture setting of the camera
Question 9
4 / -1

A person uses spectacles of power +2 D. He is sufferingfrom

A
Short sightedness or myopia

B
Long sightedness or hypermetropia

C
Presbyopia

D
Astigmatism
Question 10
4 / -1

A person suffering from \'presbyopia\' (myopia and hyper metropia both defects) should use

A
A concave lens

B
A convex lens

C
A bifocal lens whose lower portion is convex

D
A bifocal lens whose upper portion is convex

User

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Re-Attempt Weekly Quiz Competition

Ray Optics Test - 87

Result

Ray Optics Test - 87

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SHARING IS CARING

Question 1

–2 D and 0.33 D

2 D and –0.33 D

–2 D and 3 D

2 D and –3 D

Solution

Question 2

Elongation of eye ball

Irregular change in focal length

Shortening of eye ball

Older age

Question 3

Distance of the eye lens from retina is increased

Distance of the eye lens from retina is decreased

The cornea is not spherical

Power of accommodation of the eye is decreased

Question 4

The focal length of the eye lens

The object distance from the eye lens

The radii of curvature of the eye lens

The image distance from the eye lens

Question 5

Nearsighted, 50 cm

Farsighted, 50 cm

Nearsighted, 250 cm

Astigmatism, 50 cm

Solution

Question 6

I–A; II–C; III–B; IV–D

I–B; II–D; III–C; N–A

I–D; II–B; III–A; N–C

I–D; II–A; III–C; N–B

Question 7

0 and 25 cm

0 and ∞

25 cm and 100 cm

25 cm and ∞

Question 8

Focal length of the objective lens

Product of focal length and diameter of the objective lens

Distance of the object from camera

Aperture setting of the camera

Question 9

Short sightedness or myopia

Long sightedness or hypermetropia

Presbyopia

Astigmatism

Question 10

A concave lens

A convex lens

A bifocal lens whose lower portion is convex

A bifocal lens whose upper portion is convex

User

Question Analysis

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