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Online Tests
Physics Fsc Part 1 Chapter 10 Online Test MCQs With Answers
Question # 1
If a convex lens is used as a magnifying glass, whcih lens will give higher magnification that has.
Choose an answer
Short size
Long focal length
Large size
Short focal length
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Question # 2
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 # 3
A layer over the central core of the jacke is called.
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Jacket
Plastic
Cladding
Rubber
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Question # 4
The diameter of a lens is called
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Focal length
Aperture
Principle axis
Centre
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Question # 5
Multimode graded index fibre has a core whose diameter range lie from.
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5 to 50 micro meter
50 to 100 micro meter
40 to 1000 micro meter
50 to 10,000 micrometer
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Question # 6
The speed of light was measured correctly by
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Galileo
Michelson
Newton
Maxwell
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Question # 7
In Michelson's experiment the relation used to find the speed of light is
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16 fc
1/16 fd
16 fd
16/fd
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Question # 8
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 # 9
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 # 10
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 # 11
the final image obtained by astronomical telescope is.
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Erect
Virtual
Magnified
All of these
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Question # 12
In an object is placed in between focus point and Opticla center of a convex lens, the image formed by lens is.
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Real inverted
Virtual diminshed
Virtual inverted
Virtual erected
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Question # 13
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 # 14
The device used to study the spectra from different sources of light is
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Telescope
Optical fibre
Spectrometer
Microscope
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Question # 15
If focal length of objective and eye piece is 0.5 m and 10 cm respectively then magnifying power of telescope will be.
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0.5
5
10
20
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Question # 16
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 # 17
The focal length of convex lens
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Negative
Positive
small
Large
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Question # 18
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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