Question # 1

In case of point source the shape of wave front is

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Circular

Spherical

Elliptical

Square

Interplaner distance can be determined by

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Newton's rings

Bragg's law

Diffraction pattern

Interferometer

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

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Refraction

Reflection

Diffraction

Polarization

A ray of light shows the direction of propagation of light It is line which is.

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Normal to the wave front

Parallax to the wave front

Opposite to the wave front

Equal to the wave front

Bright fringes are also called as

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Minima

Maxima

Wave front

Ray of light

The phenomenon of polarization of light reveals that sun light is

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Longitudinal waves

Transverse wave

Electromagnetic waves

Monochromatic wave

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

The distinguish between transverse and longitudinal wave_______ is used.

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Refraction

Interference

Diffraction

polarization

According to Huygen's principle the points on primary wave front can be considered as

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Secondary wavelets

Ray of light

Source of light

None of these

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

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

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1578

1678

1778

1868

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

The fringe spacing increases if we use.

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Yellow light

Green lgiht

Blue light

Red light

According to Hygen's principle, each point on a wave front acts as a source of.

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Secondary wavelet

New wave front

Sound

Primary wavelet

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

Intensity of light depend on

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Wave length

Amplitude

Velocity

Frequency

Angle between ray of light and wave front is

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0 ^o

60 ^o

90 ^o

120 ^o

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