Question # 1

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

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Wave front

Diffraction

Interference

Polarization

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

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Refraction

Polarization

Interference

Diffraction

Angle between ray of light and wave front is

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0 ^o

60 ^o

90 ^o

120 ^o

Example of thin film is.

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Soap burble

convex lens

Concave lens

Glass plate

The phenomenon of polarization of light reveals that sun light is

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Longitudinal waves

Transverse wave

Electromagnetic waves

Monochromatic wave

Bright fringes are also called as

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Minima

Maxima

Wave front

Ray of light

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

When newton ring are seen through the transmitted light, then central spot is.

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Dark

Blue

Bright

Red

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 centre of Newton's fringe is dark due to.

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Destructive interference

Diffraction

Constructive interference

Polarization

The property of bending of light around obstacles is

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Interference

Diffraction

Polarization

Superposition

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 wavelength of X-rays is of the order of.

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10^-8 m

10^-10m

10^-5m

10^-4m

Newton's rings are formed due to phenomenon of.

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Interference

Dispersion

Diffraction

Polarization

The distance between two consecutive wave front is equal to

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One wave length

Two wave length

Half wave length

Three wave length

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

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Dark

Bright

Coloured

None of these

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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