ECAT Pre General Science Chapter 8 online mcq test with answers for Physics chapter 8 (Waves)

Question # 1

There is no net transfer of energy by particle of medium in

Longitudinal wave A
Transverse wave B
Progressive wave C
Stationary wave D

Question # 2

The portion of the water above its mean level forms a:

Crest A
Trough B
Both A and B C
None of these D

Question # 3

When two progressive waves of nearly same frequencies superimpose and give rise to beats, then

Frequency of beat changes with time A
Frequency of beat changes with location of observer B
All particles of medium vibrate simple harmonically with frequency equal to the difference between frequencies of component waves C
Amplitude of vibration of particles at any point changes simple harmonically with frequency equal to difference between two component waves D

Question # 4

Which one of the following elasticizes is possessed by fluids:

Young's elastic modulus (length) A
Bulk elastic modulus (volume) B
Modulus of rigidity (shape) C
None of these D

Question # 5

Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?

400 m/sec A
40 m/sec B
430 m/sec C
300 m/sec D

Question # 6

The waves in which the particles of the medium are displaced in a direction perpendicular to the direction of propagation of waves are known as

longitudinal waves A
transverse waves B
non-mechanical waves C
none of them D

Question # 7

The instantaneous velocity of a body moving along a circle is directed

along the radius A
along the tangent B
away from the circle C
none of them D

Question # 8

Such oscillations in which the amplitude decreases steadily with time, are called

resonance A
force oscillations B
large oscillations C
damped oscillations D

Question # 9

Smaller the damping, the resonance will be

more flat A
more sharp B
both of them C
none of them D

Question # 10

The damping depends upon the

amplitude A
sharpness B
both of them C
none of them D

Question # 11

When a mass 'm' is pulled slowly, the spring stretches by an amount x₀,then the average force would be

F= Kx₀ A
F=1/2Kx₀ B
F=2Kx₀ C
F=4Kx₀ D

Question # 12

Which of the following is not mechanical wave?

Sound wave A
Light wave B
wave produced in spring
C
None of them D

Question # 13

If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get

diffraction A
beat B
interference C
resonance D

Question # 14

If the length of a simple pendulum is 0.25 m its time period would be

1.0 s A
2.0 s B
3.0 s C
4.0 s D

Question # 15

The speed of sound in a medium depends on

The elastic property but not on the inertia property A
The inertia property but not on the elastic property B
The elastic property as well as the inertia property C
Neither the elastic property nor the inertia property D

Question # 16

Through which character we can distinguish the light waves from sound waves

Interference A
Refraction B
Polarization C
Reflection D

Question # 17

Example of vibratory motion is

mass suspended from a spring A
a bob of simple pendulum B
mass attached to a spring placed C
all of them D

Question # 18

The example of mechanical wave is

waves in ropes A
waves on water surface B
waves in air C
all of them D

Question # 19

Time period of simple pendulum is independent of

length A
mass B
acceleration due to gravity C
none of them D

Question # 20

Which of the following does not exhibit S.H.M?

a plucked violin string A
a mass attached to a spring B
a train shunting between two terminals C
a simple pendulum D

Question # 21

The waves which propagate by the collision of material particles are known as

e.m. waves A
mechanical waves B
light waves C
microwaves D

Question # 22

Velocity of sound in vacuum (in m/s) is

330 A
1000 B
156 C
0 D

Question # 23

Which one of the following wave motions is transverse:

Wave motion produced in water when a piece of stone is thrown into it A
Pulling of weight hanging vertically with a spiral spring B
Both of these C
None of these D

Question # 24

Time period of a simple pendulum depends upon the

length of the pendulum A
acceleration due to gravity B
none of them C
both of them D

Question # 25

To hear a clear echo, the reflecting surface must be at a minimum distance of

10 m A
16.5 m B
33 m C
66 m D

Question # 26

When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to

applied force A
momentum B
restoring force C
none of them D

Question # 27

In compressional wave,the layer of medium having reduced pressure is called:

Compression A
Elasticity B
Node C
Rarefaction D

Question # 28

When the bob of simple pendulum is at mean position, its K.E will be

maximum A
minimum B
zero C
all of them D

Question # 29

In the resonance condition, the amplitude of the oscillator becomes

very large A
very small B
zero C
any one of them D

Question # 30

Decibel is unit of

Intensity of light A
x-ray radiation capacity B
sound loudness C
Energy of radiation D

Sr.#	Question	Answer
1	Angular frequency 'w' is basically a characteristics of	A. linear motion B. circular motion C. both of them D. none of them
2	Which of the following medium/media can transmit both transverse and longitudinal waves:	A. Solids B. Liquids C. Gases D. All of them
3	Example of vibratory motion is	A. mass suspended from a spring B. a bob of simple pendulum C. mass attached to a spring placed D. all of them
4	At 'resonance' the transfer of energy from deriving source to the oscillator is	A. maximum B. minimum C. zero D. none of them
5	The damping depends upon the	A. amplitude B. sharpness C. both of them D. none of them
6	Longitudinal waves are also called:	A. Congressional waves B. Transverse waves C. Radio waves D. None of them
7	When a mass 'm' is pulled slowly, the spring stretches by an amount x_o, then the work done will be	A. W=Kx_o B. W=1/2Kx_o C. W=1/2Kx²_o D. W=4Kx_o
8	If the displacement of a body executing S.H.M is plotted against time, then the curve is known as	A. frequency of S.H.M B. period of S.H.M C. wave form D. none of them
9	The force which opposes the applied force producing the displacement in the spring is called	A. restoring force B. periodic force C. centripetal force D. resistive force
10	When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:	A. Longitudinal waves B. Transverse waves C. Water waves D. Complex waves

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ECAT Pre General Science Physics Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 8 Waves

ECAT Pre General Science Physics Chapter 8 Waves

There is no net transfer of energy by particle of medium in

The portion of the water above its mean level forms a:

When two progressive waves of nearly same frequencies superimpose and give rise to beats, then

Which one of the following elasticizes is possessed by fluids:

Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?

The waves in which the particles of the medium are displaced in a direction perpendicular to the direction of propagation of waves are known as

The instantaneous velocity of a body moving along a circle is directed

Such oscillations in which the amplitude decreases steadily with time, are called

Smaller the damping, the resonance will be

The damping depends upon the

When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be

Which of the following is not mechanical wave?

If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get

If the length of a simple pendulum is 0.25 m its time period would be

The speed of sound in a medium depends on

Through which character we can distinguish the light waves from sound waves

Example of vibratory motion is

The example of mechanical wave is

Time period of simple pendulum is independent of

Which of the following does not exhibit S.H.M?

The waves which propagate by the collision of material particles are known as

Velocity of sound in vacuum (in m/s) is

Which one of the following wave motions is transverse:

Time period of a simple pendulum depends upon the

To hear a clear echo, the reflecting surface must be at a minimum distance of

When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to

In compressional wave,the layer of medium having reduced pressure is called:

When the bob of simple pendulum is at mean position, its K.E will be

In the resonance condition, the amplitude of the oscillator becomes

Decibel is unit of

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When a mass 'm' is pulled slowly, the spring stretches by an amount x₀,then the average force would be