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

Question # 1

The waves which propagate through the oscillations of material particles are known as:

Mechanical waves A
Electromagnetic waves B
Any of them C
None of them D

Question # 2

When an oscillatory motion repeats itself, then this type of motion is called

vibratory motion A
constant motion B
fixed motion C
periodic motion D

Question # 3

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 # 4

Si units of time period is

second A
hertz B
revolution C
vibration/sec D

Question # 5

The distance covered by the wave in one second is:

Wave number A
Wave length B
Frequency C
Wave speed D

Question # 6

The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be

1 : 2 A
4 : 1 B
1 : 4 C
2 : 1 D

Question # 7

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

Compression A
Elasticity B
Node C
Rarefaction D

Question # 8

When a mass 'm' is pulled slowly through a distance 'x_o' , the elastic potential energy of the spring would be

P.E=Kx²_o A
P.E= 1/2kx_o B
P.E=1/2Kx²_o C
P.E=Kx²_o D

Question # 9

Energy is not carried by

Transverse progressive waves A
Longitudinal vibration B
Stationary waves C
Electromagnetic D

Question # 10

The example of mechanical wave is

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

Question # 11

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 # 12

The waves which propagate out in space due to oscillation of electric and magnetic fields are known as

e.m. waves A
mechanical waves B
sound waves C
water waves D

Question # 13

Which of the following is the longitudinal waves?

Sound waves A
Waves on plucked string B
Water waves C
Light waves D

Question # 14

Which type of wave can be set up in solids

longitudinal waves A
transverse waves B
both of them C
none of them D

Question # 15

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

Wave number A
Frequency B
Wavelength C
Time period D

Question # 16

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 # 17

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 # 18

Of the following, the option ______ reminds of longitudinal waves.

Sound waves A
Heat waves B
Electromagnetic waves C
Light waves D

Question # 19

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

resonance A
force oscillations B
large oscillations C
damped oscillations D

Question # 20

SI unit of frequency is

second A
hertz B
revolution C
vibrations/sec D

Question # 21

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 # 22

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 # 23

When sound waves travel from air to water which of these remains constant?

Velocity A
Frequency B
Wavelength C
All the above D

Question # 24

The damping depends upon the

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

Question # 25

An object undergoes S.H.M has maximum speed when its displacement from the mean position is

maximum A
zero B
half of the maximum value C
one third of the maximum value D

Question # 26

The weight 'mg' of the bob is resolved into

one component A
two components B
three components C
four components D

Question # 27

A physical system under going forced vibrations is known as

Simple harmonic oscillator A
Compound harmonic oscillator B
Physical harmonic oscillator C
driven harmonic oscillator D

Question # 28

At 'resonance' the transfer of energy from deriving source to the oscillator is

maximum A
minimum B
zero C
none of them D

Question # 29

A heavily damped system has a fairly

sharp resonance curve A
flat resonance curve B
both of them C
none of them D

Question # 30

A swing has

one natural frequency A
two natural frequencies B
three natural frequencies C
four natural frequencies D

Sr.#	Question	Answer
1	In case of mechanical waves, we study the motion of	A. a single particle B. collection of particle C. any one of them D. none of them
2	Laplace formula is derived from	A. Isothermal change B. Adiabatic change C. Isobaric change D. None of these
3	What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?	A. 1 MHz B. 10 Hz C. 1 GHz D. 100000 Hz
4	The distance covered by the wave in one second is:	A. Wave number B. Wave length C. Frequency D. Wave speed
5	One complete round trip of the body about its mean position is called	A. displacement B. vibration C. a complete motion D. an acceleration
6	When a mass 'm' is pulled slowly through a distance 'x_o' , the elastic potential energy of the spring would be	A. P.E=Kx²_o B. P.E= 1/2kx_o C. P.E=1/2Kx²_o D. P.E=Kx²_o
7	At 'resonance' the transfer of energy from deriving source to the oscillator is	A. maximum B. minimum C. zero D. none of them
8	The waves produced in a microwave oven have frequency	A. 2450 Hz B. 2450 K Hz C. 2450 M Hz D. 2450 G Hz
9	A physical system under going forced vibrations is known as	A. Simple harmonic oscillator B. Compound harmonic oscillator C. Physical harmonic oscillator D. driven harmonic oscillator
10	The maximum displacement of a body on either side of its equilibrium position is called	A. frequency B. amplitude C. displacement D. time period

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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

The waves which propagate through the oscillations of material particles are known as:

When an oscillatory motion repeats itself, then this type of motion is called

Example of vibratory motion is

Si units of time period is

The distance covered by the wave in one second is:

The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be

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

When a mass 'm' is pulled slowly through a distance 'xo' , the elastic potential energy of the spring would be

Energy is not carried by

The example of mechanical wave is

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

The waves which propagate out in space due to oscillation of electric and magnetic fields are known as

Which of the following is the longitudinal waves?

Which type of wave can be set up in solids

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

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

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

Of the following, the option ______ reminds of longitudinal waves.

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

SI unit of frequency is

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

The speed of sound in a medium depends on

When sound waves travel from air to water which of these remains constant?

The damping depends upon the

An object undergoes S.H.M has maximum speed when its displacement from the mean position is

The weight 'mg' of the bob is resolved into

A physical system under going forced vibrations is known as

At 'resonance' the transfer of energy from deriving source to the oscillator is

A heavily damped system has a fairly

A swing has

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When a mass 'm' is pulled slowly through a distance 'x_o' , the elastic potential energy of the spring would be