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Online Tests
Physics Fsc Part 1 Chapter 10 Online Test MCQs With Answers
Question # 1
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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Question # 2
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 # 3
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 # 4
The focal length of convex lens
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Negative
Positive
small
Large
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Question # 5
Image formed by a concave lens is
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Real
Virtual
Erect
None of these
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Question # 6
Critical angle is that angle of incident ofr which angle of refraction is.
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90
o
45
o
42
o
24
o
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Question # 7
If a convex lens is used as a magnifying glass, whcih lens will give higher magnification that has.
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Short size
Long focal length
Large size
Short focal length
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Question # 8
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 # 9
The diameter of a lens is called
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Focal length
Aperture
Principle axis
Centre
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Question # 10
The Detector in Photo phone is made up of.
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Cadmium
Germanium
Selenium
Silicon
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Question # 11
The location of near point changes with
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Age
Size of the eye
Sharpness of the eye
None of these
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Question # 12
Using a graded Index fibre, the time difference is reduced to about.
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1 ns per km
33 ns per 100 km
33 ns per km
1 ns per 100 km
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Question # 13
The ratio of size of image and size of object is
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Focal length
Magnification
Resolving power
Principle focus
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Question # 14
The speed of light was measured correctly by
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Galileo
Michelson
Newton
Maxwell
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Question # 15
If an object is placed with in the focal length of a convex lens, its image is formed.
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Real
Inverted
Virtual
Smaller than object
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Question # 16
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 # 17
A convex lens acts as diverging lens if the object is placed at
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F
2F
Between F and 2 F
Within the F
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Question # 18
Information carrying capacity of optical fibre called.
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Capacity
Band width
Immunity
Ability
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