Question # 1

Interplaner distance can be determined by

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Newton's rings

Bragg's law

Diffraction pattern

Interferometer

Soap film is sunlight appears coloured due to.

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Dispersion of light

Diffraction of light

Scattering of light

Interference fo light

The centre of Newton's fringe is dark due to.

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Destructive interference

Diffraction

Constructive interference

Polarization

Which of the following is evidence of wave nature of light

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Interference

Diffraction

Polarization

All of these

Fringe spacing in Young's double slit experiment increases due to increase in.

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Slit separation

Wave length

Order of Fringe

Frequency of source

The property of bending of light around obstacles is

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Interference

Diffraction

Polarization

Superposition

Fringe spacing is inversely proportional to.

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Wave length

Slit separation

Distance between the slit and screen

Frequency of light

Young in 1801 performed experiment for the first time about

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Interference

Diffraction

Polarization

Particle nature of light

The Bragg's equation is given by

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

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1578

1678

1778

1868

An oil film on water surface shows colour due to.

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Diffraction

Interference

Polarization

Dispersion

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

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

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Increase

Decreases

Remain same

Becomes zero

Oil film floating on water exhibits colours due to

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Interference

Diffraction

Polarization

All 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

If 'N' is number of lines rule don the grating having length 'L' then grating element 'd' is given by.

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N/L

2N/L

L/N

N/2L

Bright fringes are also called as

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Minima

Maxima

Wave front

Ray of light

Standard metal according to Michelson's interferometer is equivalent to

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1553163.5 wave meter

3 x 108meter

15503000 meter

None of these

The light energy travels in space as waves was firstly proposed by

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Maxwell

Young

Einsten

Hydrogen

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

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Physics Fsc Part 1 Chapter 9 Online Test MCQs With Answers

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