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

Question # 1

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 # 2

The restoring force always directed towards the

extreme position A
mean position B
both of them C
none of them D

Question # 3

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 # 4

Which one of the following could be the frequency of ultraviolet radiation?

1.0 x 10⁶Hz A
1.0 x 10⁹Hz B
1.0 x 10¹²Hz C
1.0 x 10¹⁵Hz D

Question # 5

When a mass 'm' is pulled slowly, the spring stretches by an amount x_o, then the work done will be

W=Kx_o A
W=1/2Kx_o B
W=1/2Kx²_o C
W=4Kx_o D

Question # 6

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 # 7

If we increase the length of a simple pendulum four times, its time period will become

2 times A
3 times B
4 times C
6 times D

Question # 8

The natural frequency of a pendulum which is vibrating freely, depends upon its

mass A
length B
material C
all of them D

Question # 9

The loudness and pitch of a sound note depends on

Intensity and velocity A
Frequency and velocity B
Intensity and frequency C
Frequency and number of harmonic D

Question # 10

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 # 11

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 # 12

The damping depends upon the

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

Question # 13

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 # 14

Which of the following is/are example/s if mechanical waves i.e. waves generated in _______:

Rope A
Coil of spring B
Water C
All of them D

Question # 15

The expression of Hook's law is

F=ma A
F=kx B
F= -kx C
-kx=ma D

Question # 16

Angular frequency 'w' is basically a characteristics of

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

Question # 17

An object undergoes S.H.M has maximum acceleration when its displacement form the means position

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

Question # 18

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 # 19

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

Wave number A
Frequency B
Wavelength C
Time period D

Question # 20

The frequency of free vibrations is known as

free frequency A
forced frequency B
natural frequency C
un-natural frequency D

Question # 21

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 # 22

Which of the following is the longitudinal waves?

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

Question # 23

In stationary waves

Energy is uniformly distributed A
Energy is minimum at nodes and maximum at antinodes B
Energy is maximum at nodes and minimum at antidotes C
Alternating maximum and minimum energy producing at nodes and antinodes D

Question # 24

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 # 25

Which of the following is an example of a S.H.M?

motion of a projectile A
motion of a train along a circular path B
motion of swing C
electrons revolving sound the nucleus D

Question # 26

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

Question # 27

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

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

Question # 28

What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?

1 MHz A
10 Hz B
1 GHz C
100000 Hz D

Question # 29

Si units of time period is

second A
hertz B
revolution C
vibration/sec D

Question # 30

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

Sr.#	Question	Answer
1	If the length of a simple pendulum is 0.25 m its time period would be	A. 1.0 s B. 2.0 s C. 3.0 s D. 4.0 s
2	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
3	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	A. Same B. 2 times C. 4 times D. 8 times
4	In transverse waves, the individual particles of the medium move:	A. In circles B. Perpendicular to the direction of level C. Parallel to the direction of level D. None of these
5	For production of beats the two sources must have	A. Different frequencies and same amplitude B. Different frequencies C. Different frequencies, same amplitude and same phase D. Different frequencies and same phase
6	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
7	The natural frequency of a pendulum which is vibrating freely, depends upon its	A. mass B. length C. material D. all of them
8	Which one of the following wave motions is transverse:	A. Wave motion produced in water when a piece of stone is thrown into it B. Pulling of weight hanging vertically with a spiral spring C. Both of these D. None of these
9	Which of the following medium/media can transmit both transverse and longitudinal waves:	A. Solids B. Liquids C. Gases D. All of them
10	In a resonance situation the amplitude of the motion may become extra ordinarily large, if	A. the driving force is large B. the driving force is zero C. the driving force may be feeble D. all 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

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

The restoring force always directed towards the

Time period of a simple pendulum depends upon the

Which one of the following could be the frequency of ultraviolet radiation?

When a mass 'm' is pulled slowly, the spring stretches by an amount xo, then the work done will be

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

If we increase the length of a simple pendulum four times, its time period will become

The natural frequency of a pendulum which is vibrating freely, depends upon its

The loudness and pitch of a sound note depends on

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

The vibratory or oscillatory motion of a body is

The damping depends upon the

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

Which of the following is/are example/s if mechanical waves i.e. waves generated in _______:

The expression of Hook's law is

Angular frequency 'w' is basically a characteristics of

An object undergoes S.H.M has maximum acceleration when its displacement form the means position

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

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

The frequency of free vibrations is known as

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

Which of the following is the longitudinal waves?

In stationary waves

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

Which of the following is an example of a S.H.M?

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

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

What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?

Si units of time period is

Which one of the following wave motions is transverse:

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When a mass 'm' is pulled slowly, the spring stretches by an amount x_o, then the work done will be