Question # 1

The waves in which the particles of the medium have displacement along the direction of propagation of waves are called

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longitudinal waves

transverse waves

non-mechanical waves

none of them

A heavily damped system has a fairly

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sharp resonance curve

flat resonance curve

both of them

none of them

Two sources of sound are said to be coherent if

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The produce sounds of equal intensity

They produce sounds of equal frequency

They produce sound waves vibrating with the same phase

They produce sound waves with zero or constant phase difference all instant of time

In the resonance condition, the amplitude of the oscillator becomes

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very large

very small

zero

any one of them

In solids, only following type/s of wave can travel:

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Transverse

Longitudinal

Both A and B

None of them

Waves transport energy

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without transport energy

with matter

both of them

none of them

The vibratory or oscillatory motion of a body is

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translatory motion

back and forth motion about its mean position

free all motion

circular motion

Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as

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waves

beat

interference

resonance

When a body is performing S.H.M., its acceleration is

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inversely proportional to the displacement

directly proportional to the applied force

directly proportional to the amplitude

directly proportional to the displacement but in opposite direction

If a freely oscillating system is subjected to an external force, then

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free vibrations will take place

the body will move with its natural frequency

forced vibrations will take place

none of them

The velocity of sound at same temperature is maximum in

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H₂

N₂

O₂

NH₃

Fluids can transmit:

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Transverse wave

Compressional wave

Both of them

None of them

The maximum displacement of a body on either side of its equilibrium position is called

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frequency

amplitude

displacement

time period

Which of the following changes at an antinode in a stationary wave?

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Density only

Pressure only

Both pressure and density

Neither pressure nor density

Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at

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subsonic speed

sonic speed

super sonic speed

any one of them

The distance covered by the wave during one period is called its:

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Wave number

Frequency

Wavelength

Time period

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Physics ECAT Pre Engineering Chapter 8 Waves Online Test MCQs With Answers

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