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Physics 10 Chapter 3 - Geometrical Optics - 12
1.
When light passes from the prism, due to which process, light is deviated from its original path?
a) Reflection
b) Refraction
c) Diffraction
d) Interference
2.
What is the transparent body called having at least one out of two surfaces curved?
a) Optical fibre
b) Lens
c) Prism
d) Mirror
3.
How many surfaces are present in lens?
a) Three
b) Four
c) Five
d) Two
4.
By which of the following process, image of an object is formed?
a) Refraction of light
b) Interference of light
c) Diffraction of light
d) Reflection of light
5.
What is used in cameras?
a) Optical fibre
b) Mirror
c) Prism
d) Lens
6.
What is used in eyeglasses?
a) Lens
b) Prism
c) Mirror
d) Optical fibre
7.
In which of the following optical devices, lenses are used?
a) All of these
b) Eyeglasses
c) Cameras
d) Microscopes
8.
What is used in microscopes?
a) Lens
b) Mirror
c) Prism
d) Optical fibre
9.
What is used in telescopes?
a) Mirror
b) Prism
c) Optical fibre
d) Lens
10.
In which of the following optical devices, lenses are used?
a) All of these
b) Telescopes
c) Microscopes
d) Projectors
11.
What is used in projectors?
a) Lens
b) Prism
c) Mirror
d) Optical fibre
12.
Which of the following enable millions of people to see clearly and read comfortably?
a) Lens
b) Prism
c) Mirror
d) Optical fibre
13.
What is the lens called which causes the incident parallel rays to converge at a point?
a) Parabolic lens
b) Convex lens
c) Diverging lens
d) Concave lens
14.
What is the lens called which causes the incident parallel rays to converge at a point?
a) Diverging lens
b) Converging lens
c) Parabolic lens
d) Concave lens
15.
How many main types of lenses are there?
a) Five
b) two
c) Three
d) Four
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