Question # 1

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

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Decreases

Remain same

Increases

Becomes zero

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

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1578

1678

1778

1868

Interplaner distance can be determined by

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Newton's rings

Bragg's law

Diffraction pattern

Interferometer

Light waves emitted from a source spread in

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Specific direction

All direction

Upward direction

None of these

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

Oil film floating on water exhibits colours due to

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Interference

Diffraction

Polarization

All of these

Angle between ray of light and wave front is

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0 ^o

60 ^o

90 ^o

120 ^o

Bright fringes are also called as

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Minima

Maxima

Wave front

Ray of light

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

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Refraction

Reflection

Diffraction

Polarization

The process of confining the beam of light to vibrate in one plane is called.

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Interference

Diffraction

Polarization

Total internal refraction

A ray of light is a line

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Parallel to wave front

Normal to wave front

Anti-parallel to wave

Any one of these

Sodium chloride in a flame gives

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Green light

White light

Red light

Yellow light

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

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Increase

Decreases

Remain same

Becomes zero

In case of point source the shape of wave front is

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Circular

Spherical

Elliptical

Square

Which one of the following can not be polarized.

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Ultra violet rays

Radio waves

T.V. Waves

Sound waves

Bending of light around the edges of an obstacle is called.

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Refraction

Polarization

Interference

Diffraction

Hygen's principle is used for.

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Explain polarization

Locate the wave front

Find the speed of light

Find the index of refraction

In case of point source the shape of wave front is.

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Plane

spherical

Circular

Eliptical

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

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Wave front

Diffraction

Interference

Polarization

The distinguish between transverse and longitudinal wave_______ is used.

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Refraction

Interference

Diffraction

polarization

Intensity of light depend on

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Wave length

Amplitude

Velocity

Frequency

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Physics Fsc Part 1 Chapter 9 Online Test MCQs With Answers

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