Question # 1

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

Critical angle is that incident angle in denser medium for which angle of refraction is.

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0 ^o

45 ^o

90 ^o

120 ^o

The location of near point changes with

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Age

Size of the eye

Sharpness of the eye

None of these

the final image obtained by astronomical telescope is.

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Erect

Virtual

Magnified

All of these

Image formed by a concave lens is

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Real

Virtual

Erect

None of these

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

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

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

__ will travel faster than other through an optical fibre.

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Ultraviolet light

Visible light

Infrared light

White light

The speed of light was measured correctly by

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Galileo

Michelson

Newton

Maxwell

Reapters are placed in new system at distance of.

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30 km

50 km

80 km

100 km

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

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