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11th Class Part 1 Physics Chapter 10 Test Online MCQs With Answers
Question # 1
The final image formed by a simple microscope.
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Virtual and inverted
Real and erected
Virtual and erected
Real and inverted
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Question # 2
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 # 3
the final image obtained by astronomical telescope is.
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Erect
Virtual
Magnified
All of these
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Question # 4
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 # 5
Which is not the essential component of a spectrometer.
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Collimator
Telescope
Turntable
Microscope
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Question # 6
A layer over the central core of the jacke is called.
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Jacket
Plastic
Cladding
Rubber
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Question # 7
The optical fiber is covered for protection by a
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Glass Jacket
Plastic Jacket
Copper Jacket
Aluminum Jacket
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Question # 8
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 # 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 least distance of distinct vision for the normal eye is.
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15 cm
25 cm
125 cm
25 m
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Question # 11
The magnifying power of an astronomical telescope is 10. If the focal length of objective is 100 cm, then what is the focal length of eye piece.
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10 cm
100 cm
1000 cm
5 cm
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Question # 12
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 # 13
The optical fibre is covered for protection by
Choose an answer
Glass jacket
Plastic jacket
Steel jacket
Diamond jacket
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Question # 14
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 # 15
For normal adjustment what is the length of astronomical telescope if focal lengths of astronomical telescope if focal lengths of objective and eye piece are 100 cm 20 cm respectively.
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10 cm
20 cm
5 cm
120 cm
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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
Information carrying capacity of optical fibre called.
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Capacity
Band width
Immunity
Ability
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