Question # 1

Interplaner distance can be determined by

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Newton's rings

Bragg's law

Diffraction pattern

Interferometer

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

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Wave front

Diffraction

Interference

Polarization

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

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

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

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Refraction

Polarization

Interference

Diffraction

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

Sodium chloride in a flame gives

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Green light

White light

Red light

Yellow light

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

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Decreases

Remain same

Increases

Becomes zero

Oil film floating on water exhibits colours due to

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Interference

Diffraction

Polarization

All of these

An oil film on water surface shows colour due to.

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Diffraction

Interference

Polarization

Dispersion

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 light energy travels in space as waves was firstly proposed by

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Maxwell

Young

Einsten

Hydrogen

In young's double slit experiment for the interference the central region will be

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Dark

Bright

Coloured

None of these

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

The centre of Newton's rings will be

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Dark

Bright

Coloured

Not visible

Sound waves can not be

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Reflected

Refracted

Polarized

Diffracted

Which of the following is evidence of wave nature of light

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Interference

Diffraction

Polarization

All of these

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Physics Fsc Part 1 Chapter 9 Online Test MCQs With Answers

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