Question # 1

To produce beats it is necessary to use two waves.

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Travelling in opposite direction

Of slightly different frequencies

Of equal wavelengths

Of equal amplitudes

For polarization , the direction of oscillation has to be perpendicular to the direction of travel sound waves are longitudinal waves so they cannot be.

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Reflected

Deflected

Diffracted

polarized

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

Which of the following is nearly monochromatic

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Light from sodium lamp

Light from candle

Light from gas lamp

Light from sun

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 quality of sound

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Decreases with pitch

Varies directly as its pitch

Varies inversely as its pitch

Depends upon the overtones present there

The phenomenon of polarization is done by

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Selective absorption

Scattering of light

Refraction of light

Dispersion of light

On average there is no energy transfer in.

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Sound waves

Water waves

Standing waves

Mechanical waves

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 physical properties is most responsible for resonance.

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Frequency

Intensity

Pitch

Loundness

Which effect explain the frequency shift that occurs when there is motion sound a listener or both relative to the medium.

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Early effect

Doppler's effect

Hall effect

Zeeman effect

Which term is used for the persistence of sound in a hall.

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Resonance

Acoustics

Symphony

Reverberation

Air bubble in water shines because of

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Reflection

Refraction

Diffraction

Total internal reflection

When mas of a string is increased 4 times its original valve, the velocity of the wave.

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Becomes double

Reduces to one half

Reduces to one fourth

Increases 4 times to its original value

Stationary waves are produced when two identical waves are moving on the string.

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Along the same direction

Along the opposite direction

Along the perpendicular direction

Of length 1 m

The pitch of sound a determined by its

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Speed

Frequency

Direction

Number of beats

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

Which of the following represents an elastic wave.

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Light waves

Radiowaves

X-rays

Sound waves

On loading the prong of a tuning fork with wax. Its frequency.

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Increases

Decreases

Remain unchanged

May increase or decrease

The note of the lowest frequency is called

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beat

Overtone

Fundamental note

Harmonic note

Which of the following factor will not affect the speed of sound i a medium.

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Temperature

Pressure

Humidity

Mass

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

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