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Physics English Medium Fsc Part 1 Chapter 9 Online MCQs Test MCQs With Answers

Question # 1

the locus of all pint in the same wave of vibration is called.

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Wave front

Diffraction

Interference

Polarization

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Question # 2

Which phenomenon of light proves that light waves are transverse in nature.

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Refraction

Reflection

Diffraction

Polarization

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Question # 3

The centre of Newton's rings will be

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Dark

Bright

Coloured

Not visible

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Question # 4

The phenomenon of polarization of light reveals that sun light is

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Longitudinal waves

Transverse wave

Electromagnetic waves

Monochromatic wave

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Question # 5

Dark fringes are also called as

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Minima

Maxima

Wave front

Ray of light

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Question # 6

Michelson's interferometer can be used ot find the

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Velocity of light

Wavelength of light

Velocity of sound

Wavelength of sound

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Question # 7

In red light is used as compare to blue light then fringe spacing.

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Decreases

Remain same

Increases

Becomes zero

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Question # 8

A typical diffraction grating has certain number of lines per centimeter whose range is.

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40 to 50

400 to 5000

400 to 500

4000 to 5000

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Question # 9

When one mirror of a Michelson interferometer is moved a distance of 0.5 mm, 2000 fringes and observed, The wavelength of light used is.

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5000 m

50000 A^o

500 cm

2000 A^o

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Question # 10

Huygen's proposed, light energy travels in space from source in

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1578

1678

1778

1868

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