This page requires a JavaScript-enabled browser
Instructions on how to enable your browser are contained in the help file.
Physics 10 Chapter 3 - Geometrical Optics - 26
1.
If the object is close to the eye, which of the following statement is correct about accommodation?
a) Focal length is increased
b) Ciliary muscles relax
c) Curvature of lens is increased
d) The deviation of light from the lens must be less
2.
If the object is close to the eye, which of the following statement is correct about accommodation?
a) Curvature of lens is decreased
b) Focal length is decreased
c) Ciliary muscles relax
d) The deviation of light from the lens must be less
3.
What is the variation of focal length of eye lens called?
a) Magnification
b) Accommodation
c) Defect of vision
d) Resolution
4.
What is the minimum distance of an object from the eye called at which it produces a sharp image on the retina?
a) Distant point
b) Near point
c) Magnification point
d) Far point
5.
What is the minimum distance of an object from the eye called at which it produces a sharp image on the retina?
a) Far point
b) Farther distance of distinct vision
c) None of these
d) Least distance of distinct vision
6.
For people in their early twenties, what is the near point?
a) 250 cm
b) Infinity
c) 25 cm
d) 500 cm
7.
What is the near point for people of 40 years of age?
a) 500 cm
b) 250 cm
c) Infinity
d) 50 cm
8.
What is the near point for people of 60 years of age?
a) Infinity
b) 25 cm
c) 50 cm
d) 500 cm
9.
What is the maximum distance of a distant object from the eye called at which a fully relaxed eye can focus?
a) Near point
b) Least distance of distinct vision
c) Far point
d) Magnification point
10.
What is the far point for normal eyes?
a) 500 cm
b) 50 cm
c) 25 cm
d) Infinity
11.
What is the inability of the eye to see the image of objects clearly called?
a) Resolution
b) Defects of vision
c) Accommodation
d) Magnification
12.
What is the defect of vision called in which people cannot see distant objects clearly?
a) Near-sightedness
b) Metropia
c) Far-sightedness
d) Hypermetropia
13.
Which of the following statement is TRUE about myopia?
a) Image is formed behind retina
b) It may be due to eyeball being too short
c) It can be corrected by using converging lenses
d) People cannot see distant objects clearly
14.
What is the defect of vision called in which people cannot see distant objects clearly?
a) Metropia
b) Hypermetropia
c) Myopia
d) Far-sightedness
15.
How many main type(s) of defects of vision are there?
a) Two
b) Three
c) Four
d) One
This is more feedback!
This is the feedback!
