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

Question # 1

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 # 2

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 # 3

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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Question # 4

Total confined light is obtained by

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Total internal reflection

Refraction of light

Diffraction

Polarization

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Question # 5

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 # 6

The light emitted from light emitting diode has wave length.

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1.1 micro meter

1.3 micro meter

1.5 micro meter

1.7 micro meter

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Question # 7

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 # 8

The speed of light was measured correctly by

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Galileo

Michelson

Newton

Maxwell

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Question # 9

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

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Michelson

Hygen's

Galileo

Ability

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Question # 10

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

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Question # 11

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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