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

Question # 1

Smaller the damping, greater will be the

frequency A
wavelength B
amplitude C
none of them D

Question # 2

SI unit of wave length is:

Kilometer A
Metre B
Centimetre C
Hertz D

Question # 3

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 # 4

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

rotatory motion A
motion under gravity B
angular motion C
simple harmonic motion D

Question # 5

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 # 6

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 # 7

Acceleration of the mass at any instant is given by

a=k/m x A
a= - m/k x B
a = - k/m x C
a=m/k x D

Question # 8

The square of 0.4 is:

Greater than 0.4 A
Smaller than 0.4 B
Equal to 0.4 C
None of them D

Question # 9

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 # 10

The force which opposes the applied force producing the displacement in the spring is called

restoring force A
periodic force B
centripetal force C
resistive force D

Question # 11

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 # 12

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 # 13

The distance covered by the wave in one second is:

Wave number A
Wave length B
Frequency C
Wave speed D

Question # 14

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 # 15

The velocity of sound in air not effected by changes in

Moisture contents in air A
Temperature of air B
The atmosphere pressure C
The composition of air D

Question # 16

If the mass of the simple pendulum becomes double, its time period

increase A
decreases B
remains constant C
none of them D

Question # 17

When two waves with same frequency and constant phase difference phase difference interfere

There is a gain of energy A
There is a loss of energy B
The energy is redistributed and the distribution changes with time C
The energy is redistributed and the distribution remains constant with time D

Question # 18

The velocity of sound at same temperature is maximum in

H₂ A
N₂ B
O₂ C
NH₃ D

Question # 19

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 # 20

The principle of superposition states that

The total displacement due to several waves is the sum of the displacement due to those waves acting individually A
Two stationary waves superimpose to give two progressive waves B
A diffraction pattern consists of many interference patterns superimposed on one another C
Two progressive waves superimpose to give a stationary wave D

Question # 21

In the same medium, velocity of the wave:

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

Question # 22

A second's pendulum is a pendulum whose time period is

1 second A
2 seconds B
3 seconds C
4 seconds D

Question # 23

The expression for restoring force is

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

Question # 24

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 # 25

A body is executing free vibrations when it oscilates

with the interference of an external force A
without the interference of an external force B
with the interference of an internal force C
none of them D

Question # 26

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 # 27

Which of the following is the longitudinal waves?

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

Question # 28

In transverse waves, the individual particles of the medium move:

In circles A
Perpendicular to the direction of level B
Parallel to the direction of level C
None of these D

Question # 29

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 # 30

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

Velocity A
Frequency B
Wavelength C
All the above D

Sr.#	Question	Answer
1	The maximum displacement of a body on either side of its equilibrium position is called	A. frequency B. amplitude C. displacement D. time period
2	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
3	With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are	A. Energy, momentum and mass B. Energy C. Energy and mass D. Energy and linear momentum
4	Such oscillations in which the amplitude decreases steadily with time, are called	A. resonance B. force oscillations C. large oscillations D. damped oscillations
5	Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as	A. waves B. beat C. interference D. resonance
6	If we increase the length of a simple pendulum four times, its time period will become	A. 2 times B. 3 times C. 4 times D. 6 times
7	If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get	A. diffraction B. beat C. interference D. resonance
8	The velocity of sound at same temperature is maximum in	A. H₂ B. N₂ C. O₂ D. NH₃
9	The principle of superposition states that	A. The total displacement due to several waves is the sum of the displacement due to those waves acting individually B. Two stationary waves superimpose to give two progressive waves C. A diffraction pattern consists of many interference patterns superimposed on one another D. Two progressive waves superimpose to give a stationary wave
10	The time period of pendulums of different lengths would be	A. same B. different C. both of them D. none of them

Latest Educational News Stories

Pakistan's Largest Database of Colleges and Universities

BS Programs

University Past Papers

University Results

Exam Results 2024

Study Abroad Programs and Opportunities for Pakistani Students

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

Smaller the damping, greater will be the

SI unit of wave length is:

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

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

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

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

Acceleration of the mass at any instant is given by

The square of 0.4 is:

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

The force which opposes the applied force producing the displacement in the spring is called

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

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

The distance covered by the wave in one second is:

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

The velocity of sound in air not effected by changes in

If the mass of the simple pendulum becomes double, its time period

When two waves with same frequency and constant phase difference phase difference interfere

The velocity of sound at same temperature is maximum in

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

The principle of superposition states that

In the same medium, velocity of the wave:

A second's pendulum is a pendulum whose time period is

The expression for restoring force is

If a wave can be polarized, it must be

A body is executing free vibrations when it oscilates

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

Which of the following is the longitudinal waves?

In transverse waves, the individual particles of the medium move:

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

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

Prepare Complete Set Wise ECAT Pre General Science Physics Chapter 8 Waves MCQs Online With Answers

Set 1

Set 2

Set 3

Set 4

Set 5

Set 6

Topic Test

Top Scorers Of ECAT Pre General Science Physics Chapter 8 Waves MCQ`s Test

ECAT Physics Chapter 8 Important MCQ's

Test Questions

Is this page helpful?

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

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