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Online Tests
ECAT Pre General Science Physics Chapter 8 Waves Online Test MCQs With Answers
Question # 1
When temperature increase, the frequency of a tuning fork
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Increases
Decreases
Remains same
Increase or decreases depending on the material
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Question # 2
In the production of beats by 2 waves of same amplitude and nearly same frequency, the maximum intensity to each of the constituent waves is
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Same
2 times
4 times
8 times
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Question # 3
The vibratory motion of a body whose magnitude of acceleration is directly proportional to the magnitude of its displacement and is always directed towards the equilibrium position is called
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rotatory motion
motion under gravity
angular motion
simple harmonic motion
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Question # 4
Angular frequency 'w' is basically a characteristics of
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linear motion
circular motion
both of them
none of them
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Question # 5
The vibrations of factory floor caused by the running of heavy machinery is an example of
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free vibration
natural vibrations
forced vibrations
all of them
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Question # 6
Mechanical waves on the surface of a liquid are
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Transverse
Longitudinal
Torsional
both transverse and longitudinal
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Question # 7
The expression of Hook's law is
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F=ma
F=kx
F= -kx
-kx=ma
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Question # 8
Time period of simple pendulum is independent of
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length
mass
acceleration due to gravity
none of them
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Question # 9
A heavily damped system has a fairly
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sharp resonance curve
flat resonance curve
both of them
none of them
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Question # 10
The velocity of sound in air depends upon
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Density and elasticity of gas
Pressure
Wavelength
Amplitude and frequency of sound
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Question # 11
In solids, only following type/s of wave can travel:
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Transverse
Longitudinal
Both A and B
None of them
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Question # 12
A traveling wave has a shape of:
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Square wave
Sine wave
Parabola
hyperbola
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Question # 13
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
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Question # 14
Waves transport energy
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without transport energy
with matter
both of them
none of them
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Question # 15
The waves moving from a sitar to a listener in air are
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Longitudinal progressive
Longitudinal stationary
Transverse progressive
Transverse stationary
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Question # 16
The velocity of sound in air not effected by changes in
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Moisture contents in air
Temperature of air
The atmosphere pressure
The composition of air
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Question # 17
Longitudinal waves are also called:
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Congressional waves
Transverse waves
Radio waves
None of them
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Question # 18
At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is
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Sinusoidal shape with amplitude A/3
Sinusoidal shape with amplitude A/2
Sinusoidal shape with amplitude A
Straight line
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Question # 19
The portion of the water above its mean level forms a:
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Crest
Trough
Both A and B
None of these
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Question # 20
The principle of superposition states that
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The total displacement due to several waves is the sum of the displacement due to those waves acting individually
Two stationary waves superimpose to give two progressive waves
A diffraction pattern consists of many interference patterns superimposed on one another
Two progressive waves superimpose to give a stationary wave
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Question # 21
As the bob of the pendulum moves to and fro which of the force is experienced by the bob
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its weight
tension in the string
viscous drag force by air
all of them
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Question # 22
When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:
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Longitudinal waves
Transverse waves
Water waves
Complex waves
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Question # 23
A simple pendulum consists of a
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small light bob
small heavy bob
big light bob
big heavy bob
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Question # 24
The example of mechanical wave is
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waves in ropes
waves on water surface
waves in air
all of them
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Question # 25
Velocity of sound in vacuum (in m/s) is
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330
1000
156
0
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Question # 26
The square of 0.4 is:
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Greater than 0.4
Smaller than 0.4
Equal to 0.4
None of them
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Question # 27
When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be
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45
°
90
°
135
°
180
°
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Question # 28
If one end of a rubber cord is fixed with a support and the other end is wiggled by hand, the waves generated on the card are:
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Stationary waves
Transverse waves
Both of these
None of these
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Question # 29
A second's pendulum is a pendulum whose time period is
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1 second
2 seconds
3 seconds
4 seconds
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Question # 30
The speed of sound in a medium depends on
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The elastic property but not on the inertia property
The inertia property but not on the elastic property
The elastic property as well as the inertia property
Neither the elastic property nor the inertia property
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Question # 31
Fluids can transmit:
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Transverse wave
Compressional wave
Both of them
None of them
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