Question # 1

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

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

The fringe spacing increases if we use.

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Yellow light

Green lgiht

Blue light

Red light

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

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Destructive interference

Diffraction

Constructive interference

Polarization

The blue colour of sky is due to

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diffraction

Reflection

Polarization

Scattering

The distinguish between transverse and longitudinal wave_______ is used.

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Refraction

Interference

Diffraction

polarization

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 Bragg's equation is given by

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Which one of the following can not be polarized.

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Ultra violet rays

Radio waves

T.V. Waves

Sound waves

In case of point source the shape of wave front is

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Circular

Spherical

Elliptical

Square

The centre of Newton's rings will be

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Dark

Bright

Coloured

Not visible

Interplaner distance can be determined by

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Newton's rings

Bragg's law

Diffraction pattern

Interferometer

The fringe spacing in a double slit experiment can be increased by decreasing.

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Wavelength of light

Width of slits

Slit separation

Distance between the slits and the screen

Sodium chloride in a flame gives

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Green light

White light

Red light

Yellow light

Bright fringes are also called as

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Minima

Maxima

Wave front

Ray of light

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 light energy travels in space as waves was firstly proposed by

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Maxwell

Young

Einsten

Hydrogen

Oil film floating on water exhibits colours due to

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Interference

Diffraction

Polarization

All of these

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Physics ICS Part 1 Chapter 9 Online Test MCQs With Answers

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