Question # 1

The first person who attempted to measure the speed of light was.

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Michelson

Hygen's

Galileo

Ability

the final image obtained by astronomical telescope is.

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Erect

Virtual

Magnified

All of these

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

Multimode step index fiber is useful for.

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Long distance

Sort distance

Very long distance

Infinite distance

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

The types of optical fibres are

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Three

Four

Five

Six

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

The final image formed by a simple microscope.

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Virtual and inverted

Real and erected

Virtual and erected

Real and inverted

The units of magnifying power of microscope or telescope are.

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Metre

m^-1

dioptre

No unit

The focal length of a concave lens is always

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+ve

-ve

Zero

None of these

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

__ will travel faster than other through an optical fibre.

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Ultraviolet light

Visible light

Infrared light

White light

Image formed by a concave lens is

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Real

Virtual

Erect

None of these

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

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

Multimode step index fibre is useful for

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Long distances

Short distances

Better quality

Low price

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

Total confined light is obtained by

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Total internal reflection

Refraction of light

Diffraction

Polarization

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Physics Fsc Part 1 Chapter 10 Online Test MCQs With Answers

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