Question # 1

The optical fibre is covered for protection by

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Glass jacket

Plastic jacket

Steel jacket

Diamond jacket

Multimode step index fiber is useful for.

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Long distance

Sort distance

Very long distance

Infinite distance

The device used to study the spectra from different sources of light is

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Telescope

Optical fibre

Spectrometer

Microscope

A convex lens can be used as

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Simple microscope

Compound microscope

Telescope

Spectrometer

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

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

The optical fiber is covered for protection by a

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Glass Jacket

Plastic Jacket

Copper Jacket

Aluminum Jacket

Information carrying capacity of optical fibre called.

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Capacity

Band width

Immunity

Ability

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

The types of optical fibres are

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Three

Four

Five

Six

The accepted value for speed of light in vacuum

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2.99 x 10⁸m - sec^-1

2.99 x 10⁶m - sec^-1

2.99 x 10⁸km - sec^-1

2.99 x 10⁸m - h^-1

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

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