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

Question # 1

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

Transverse A
Longitudinal B
Both A and B C
None of them D

Question # 2

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

frequency A
amplitude B
displacement C
time period D

Question # 3

In the same medium, velocity of the wave:

Goes on increasing A
Remains constant B
Goes on decreasing C
None of these D

Question # 4

Time period of simple pendulum is independent of

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

Question # 5

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 # 6

When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:

Longitudinal waves A
Transverse waves B
Water waves C
Complex waves D

Question # 7

With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are

Energy, momentum and mass A
Energy B
Energy and mass C
Energy and linear momentum D

Question # 8

Angular frequency 'w' is basically a characteristics of

linear motion A
circular motion B
both of them C
none of them D

Question # 9

If the time period a simple pendulum is 2 s, its frequency would be

2 Hz A
1.5 Hz B
1.0 Hz C
0.5 Hz D

Question # 10

Waves transport energy

without transport energy A
with matter B
both of them C
none of them D

Question # 11

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

waves A
beat B
interference C
resonance D

Question # 12

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

subsonic speed A
sonic speed B
super sonic speed C
any one of them D

Question # 13

A wave, which transfer energy by moving away from the source of disturbance is called a

progressive wave A
travelling wave B
both of them C
none of them D

Question # 14

The temperature at which the speed of sound becomes double as was at 27°C is

273°C A
0°C B
927°C C
1027°C D

Question # 15

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

inversely proportional to the displacement A
directly proportional to the applied force B
directly proportional to the amplitude C
directly proportional to the displacement but in opposite direction D

Question # 16

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 # 17

The vibratory or oscillatory motion of a body is

translatory motion A
back and forth motion about its mean position B
free all motion C
circular motion 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

If the displacement of a body executing S.H.M is plotted against time, then the curve is known as

frequency of S.H.M A
period of S.H.M B
wave form C
none of them D

Question # 20

If F=0.04 N and X=4 cm then K=

1 Nm^-1 A
2 Nm^-1 B
3 Nm^-1 C
4 Nm^-1 D

Question # 21

In a resonance situation the amplitude of the motion may become extra ordinarily large, if

the driving force is large A
the driving force is zero B
the driving force may be feeble C
all of them D

Question # 22

If a wave can be polarized, it must be

An electromagnetic wave A
A longitudinal wave B
A progressive wave C
A transverse wave D

Question # 23

In the formula for finding the speed of waves in the spring, unit of m in SIn units is:

kg A
kg-meter B
kg/meter C
Meter/kg D

Question # 24

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 # 25

Ultra-violet rays differ from X-rays in that they

Cannot be diffracted A
Cannot be polarized B
Have a lower frequency C
Are deviated when they pass through a magnetic field D

Question # 26

A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:

Longitudinal wave A
Transverse wave B
No vibration at all C
None of them D

Question # 27

One complete round trip of the body about its mean position is called

displacement A
vibration B
a complete motion C
an acceleration D

Question # 28

For a body executing S. H. M, its

momentum remains constant A
potential energy remains constant B
kinetic energy remains constant C
total energy remains constant D

Question # 29

If the length of second pendulum becomes four times then its time period will become

Four time A
Two times B
Six times C
Eight times D

Question # 30

The vibrations of factory floor caused by the running of heavy machinery is an example of

free vibration A
natural vibrations B
forced vibrations C
all of them D

Sr.#	Question	Answer
1	One complete round trip of the body about its mean position is called	A. displacement B. vibration C. a complete motion D. an acceleration
2	When two progressive waves of nearly same frequencies superimpose and give rise to beats, then	A. Frequency of beat changes with time B. Frequency of beat changes with location of observer C. All particles of medium vibrate simple harmonically with frequency equal to the difference between frequencies of component waves D. Amplitude of vibration of particles at any point changes simple harmonically with frequency equal to difference between two component waves
3	A wave, which transfer energy by moving away from the source of disturbance is called a	A. progressive wave B. travelling wave C. both of them D. none of them
4	The waves which propagate out in space due to oscillation of electric and magnetic fields are known as	A. e.m. waves B. mechanical waves C. sound waves D. water waves
5	Example of progressive wave is	A. transverse waves B. longitudinal waves C. both of them D. none of them
6	Smaller the damping, greater will be the	A. frequency B. wavelength C. amplitude D. none of them
7	A stationary sound wave has frequency 165 Hz (speed of sound in air = 330 m/s) then distance between two consecutive nodes is	A. 2 m B. 1 m C. 0.5 m D. 4 m
8	The vibratory or oscillatory motion of a body is	A. translatory motion B. back and forth motion about its mean position C. free all motion D. circular motion
9	The speed of sound in a medium depends on	A. The elastic property but not on the inertia property B. The inertia property but not on the elastic property C. The elastic property as well as the inertia property D. Neither the elastic property nor the inertia property
10	A heavily damped system has a fairly	A. sharp resonance curve B. flat resonance curve C. both of them D. none of them

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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

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

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

In the same medium, velocity of the wave:

Time period of simple pendulum is independent of

The speed of sound in a medium depends on

When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:

With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are

Angular frequency 'w' is basically a characteristics of

If the time period a simple pendulum is 2 s, its frequency would be

Waves transport energy

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

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

A wave, which transfer energy by moving away from the source of disturbance is called a

The temperature at which the speed of sound becomes double as was at 27°C is

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

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

The vibratory or oscillatory motion of a body is

The example of mechanical wave is

If the displacement of a body executing S.H.M is plotted against time, then the curve is known as

If F=0.04 N and X=4 cm then K=

In a resonance situation the amplitude of the motion may become extra ordinarily large, if

If a wave can be polarized, it must be

In the formula for finding the speed of waves in the spring, unit of m in SIn units is:

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

Ultra-violet rays differ from X-rays in that they

A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:

One complete round trip of the body about its mean position is called

For a body executing S. H. M, its

If the length of second pendulum becomes four times then its time period will become

The vibrations of factory floor caused by the running of heavy machinery is an example 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