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

Question # 1

Total confined light is obtained by

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Total internal reflection

Refraction of light

Diffraction

Polarization

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Question # 2

The ability of reveal the minor details of an object under examination is called.

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Resolving power

Magnification

Scattering

Reflection

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Question # 3

Information carrying capacity of optical fibre called.

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Capacity

Band width

Immunity

Ability

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Question # 4

The focal length of convex lens

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Negative

Positive

small

Large

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Question # 5

The magnifying power of a convex lens of focal lendth 10 cm is

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9.6

3.5

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Question # 6

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 # 7

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 # 8

The magnifying power is also called

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Resolving power

Angular magnification

Strength of eye

None of these

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Question # 9

Multimode step index fibre is useful for

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Long distances

Short distances

Better quality

Low price

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Question # 10

The magnification of a convex lens of focal length 5 cm is equal to.

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Question # 11

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

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Question # 12

The types of optical fibres are

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Three

Four

Five

Six

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