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Physics English Medium Fsc Part 1 Chapter 10 Online MCQs Test MCQs With Answers

Question # 1

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 # 2

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 # 3

The Detector in Photo phone is made up of.

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Cadmium

Germanium

Selenium

Silicon

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Question # 4

__ 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 # 5

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 # 6

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 # 7

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

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Question # 8

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 # 9

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 # 10

Information carrying capacity of optical fibre called.

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Capacity

Band width

Immunity

Ability

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Question # 11

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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