Question # 1

Light of passing through a polaroid is

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Plane polarized

Unpolarized

Circularly polarized

Elliptically polarized

When two waves travelling through the same medium arrive at the same point 180 ^o out of phase, they give rise to.

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Polarization

Destructive interference

Refraction

Constructive interference

The phenomenon of interference comes about because waves obey

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the impulse momentum theorem

An inverse square law of intensity

The principle of reciprocity

The principle of super position

Two sources of sound are said to be in resonance when.

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They look like similar

They produce sound of same frequency

They are enacted by the same agent

They differ from each other

Air bubble in water shines because of

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Reflection

Refraction

Diffraction

Total internal reflection

In the experiment of production of X rays the anti cathode should be bombarded with.

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A particles

Beta particles

Electrons

Protons

Newton's rings are experimentally derived from the phenomenon of.

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Polarization of light

Resolution of light

Interference of light

Diffraction of light

In which of the following the speed of sound will be maximum under similar conditions.

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N2

O2

CO2

H2

If a wave vibrate 10 times in 1 s with a speed of 10 m s-1 the correct wavelength of the wave is.

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1 m

10 m

20 m

100 m

X-rays travels ins straight line with velocity

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Less than light

Greater than light

Equal to light

Equal to sound

A application of the phenomenon of polarization is in

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The scattering of light beams

Explaining the blue colour of sky

Identifying chemicals elements

Analysis of mechanical stress

Which of the following devices can be used to produce both transvers and longitudinal waves.

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A string

A ripple tank

a helical spring

A turning fork

The central ring is bright in case of Newton's rigs produced by

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Reflection

Wedges

Refraction

Transmission

Two light waves which are not coherent cannot produce.

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Interference

Diffraction

Reflection

Dispersion

The speed of bodies exceeding the speed of sound is called.

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Superesonic

Ultrasonic

Infrasonic

Super fast

The addition of two or more waves is termed as

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Interferences

Period

Echo

Polarization

What is shapes of a pure note

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Sinwave

Sawtooth

Square wave

Triangular wave

The wave phenomenon that classifies light as a transverse wave is.

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Polarization

Diffraction

Interference

Refraction

When a newton's right interference pattern a viewd from above by means of reflected light , the central spot is

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Multicoloured

Alternately white and black

Bright

Dark

We can hear beats when the difference in the frequencies of two sounding bodies is not more than.

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2

4

6

10

In case of longitudinal waves the individual particles of the medium move.

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In circles

In ellipses

Parallel to wave propagation

Perpendicular to wave propagation

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