Question # 1

The energy following per second through a unit area held perpendicular to the direction of wave is.

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The loudness of the sound waves

The pitch of the sound waves

The intensity level of sound waves

The intensity of sound waves

The ripple tank is used to study various features of

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Wave phenomenon

Interferences

Doppler's effect

Reverberation

Which of the following gives discrete emission spectrum.

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Sun

Candle

Incandescent filament

Mercury vapour lamp

Which of the following proves that light waves are transverse in nature.

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Diffraction

Interference

Polarization

Refraction

A polaroid is

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A red light filter

A device used for a analyzing polarized light

A device used in polarimeter

An adjustable shutter

On reflection of light from a source there occurs a change in

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Wavelength

Velocity

Period

Frequency

In case of stationary waves every particle of the medium has fixed

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Velocity

Displacement

Amplitude

Phase

Which of the following forms of electromagnetic energy has the longest wavelength.

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Microwaves

Radio waves

Infrared waves

^{Visible light}

Fringe spacing in double slit experiment can be increased by decreasing.

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Wavelength of light

Width of slits

Slite separation

Distance between the slits and screen

A sheet of transparent material with fine equality spaced lines ruled parallel on its surface is called.

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Interferometer

Grating element

ruler

Patch

Three tuning forks of frequencies 400 Hz. 401 Hz and 402 Hz are sounded together The frequency of beats per sound is.

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0

1

2

3

Which form of electromagnetic radiation is used in RADAR.

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Long wavelength ultraviolet waves

short wavelength microwaves

short wavelength infrared wave

Long wavelength radiowaves

In the experiment of production od x rays electrons are accelerated towards the anode by

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Thermionic emission

Potential difference

Breaking potential

Cut of currrent

Interference through thin films depends upon

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Thickness of thin film

Nature of material of thin film

angle of incident light

All of the above

A sound wave is an example of

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Transverse wave

longitudinal waves

Hair wave

Stationary wave

Beats are the result of.

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Interference

Doppler's effect

Ultrasound

Polarization

Huygen's principle is used to explain the

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Speed of light

Dispersion of light

Propagation of light

Reflection of light

In a diffraction pattern, the width of any fringe is.

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Directly proportional to slit width

Inversely proportional to slit width

independent of slit width

Zero

Which of the following is an example band spectra.

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Black body radiation spectrum

Atomic spectra

Molecular spectra

Anomalous spectrum

Which of the following are examples of transverse and a longitudinal wave.

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Radio and sound waves

Radio and light waves

Light and water ripples

Light and sound waves

The velocity of the wave could be increased by

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Reducing the amplitude

Decreasing the frequency

Increasing the period

Stretching the spring more

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PPSC Physics Chapter 5 Waves and Wave Properties of Light MCQs With Answers

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