Question # 1

Michelson's interferometer can b e sued to find

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Velocity of light

Velocity of sound

Wavelength of light

Wavelength of sound

Which of the following characteristics of a wave is independent of the others.

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speed

Frequency

Amplitude

Wavelength

The quality of a note

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Decreases with loudness

Varies directly as its pitch

Varies inversely as its pitch

Depends upon the overtones

Which type of oscillations produce resoncance.

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Free

Forced

Damped

All of these

Which of the following cannot be polarized.

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Ultraviolet rays

Radio waves

T.V waves

Sound waves

Which of the following is not electromagnetic .

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x-rays

Gama rays

Cathood rays

Infrared rays

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

What will be the frequency it an employ vessel is filled with water.

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Increases

Decreases

Remain unchanged

Fundamental

The phase velocity is the velocity of a point that moves with a wave at constant phase it is also called.

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Phase speed

Wave speed

Wave velocity

All of these

Which of the following phenomenon occurs when two sound waves of equal amplitude and different frequencies travel through the same region.

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Doppler's effect

Resonance

Beats

Echo

A girl standing 150 m in front of tall building fires a pistol A boy standing 350 m behind her hears two bangs 1 s apart from this information what is the speed of sound in air.

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150 m s-1

300 m s-1

280 m s-1

330 m s-1

The phenomenon of beats takes place due to

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Longitudinal waves

Transverse waves

Stationary waves

Both a and b

The loudness of a sound deepness on its

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Wavelength

Frequency

Wave amplitude

Regularity

Laser light is considered to be coherent because it consists of.

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Many wavelengths

Uncoordinated wavelengths

Coordinated waves of exactly the same wavelength

Divergent beams

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 of the following is nearly monochromatic light.

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Light from fluorescent tube

Light from neon lamp

Light from sodium lamp

Light from simple lamp

When a transverse wave is reflected on going from a more dense to a less dense medium.

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There is no phase shift

There is a 180 ^o phase shift

There is a phase shift of 360 ^o

A crest is transformed to a trough

Beats are the result of.

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Interference

Doppler's effect

Ultrasound

Polarization

A pendulum vibrates with a time period of 1 s which range of sound is produced by it

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Audible

Infrasonic

Ultrasonci

Super sonic

Beats occurs because of.

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Reflection

Refraction

Interference

Doppler's effect

The pitch of sound a determined by its

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Speed

Frequency

Direction

Number of beats

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

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