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Online Tests
11th Class Part 1 Physics Chapter 10 Test Online MCQs With Answers
Question # 1
The ratio of size of image and size of object is
Choose an answer
Focal length
Magnification
Resolving power
Principle focus
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Question # 2
The final image seen through ey piece in telescope is.
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Real, enlarge and inverted
Vertual, enlarge and erect
Virtual, enlarge and inverted
In Real, enlarge and erect
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Question # 3
If an object lies at focus point F in front of a converd lens, its image is formed at.
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2F
F
3F
Infinity
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Question # 4
The focal length of a concave lens is always
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+ve
-ve
Zero
None of these
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Question # 5
Total confined light is obtained by
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Total internal reflection
Refraction of light
Diffraction
Polarization
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Question # 6
The accepted value for speed of light in vacuum
Choose an answer
2.99 x 10
8
m - sec
-1
2.99 x 10
6
m - sec
-1
2.99 x 10
8
km - sec
-1
2.99 x 10
8
m - h
-1
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Question # 7
The light emitted from light emitting diode has wave length.
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1.1 micro meter
1.3 micro meter
1.5 micro meter
1.7 micro meter
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Question # 8
__ will travel faster than other through an optical fibre.
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Ultraviolet light
Visible light
Infrared light
White light
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Question # 9
A layer over the central core of the jacke is called.
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Jacket
Plastic
Cladding
Rubber
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Question # 10
If the object is at 5 cm from the lens of simple microscope than its magnifying power will be.
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5
10
15
25
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Question # 11
The units of magnifying power of microscope or telescope are.
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Metre
m
-1
dioptre
No unit
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Question # 12
The minimum distance from eye at which an object appears to be distinct is
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Near point
Focal length
Image distance from lens
Object distance from lens
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Question # 13
Reapters are placed in new system at distance of.
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30 km
50 km
80 km
100 km
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Question # 14
Information carrying capacity of optical fibre called.
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Capacity
Band width
Immunity
Ability
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Question # 15
Critical angle is that incident angle in denser medium for which angle of refraction is.
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0
o
45
o
90
o
120
o
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Question # 16
Multimode step index fiber is useful for.
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Long distance
Sort distance
Very long distance
Infinite distance
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Question # 17
The magnifying power of a convex lens of focal lendth 10 cm is
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7
9.6
11
3.5
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Question # 18
More details of an object can be seen with a microscope by using
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Green light
Red light
Yellow light
Blue light
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