Home/Physics Mcqs/Physics Waves Online Test

Physics Waves Online Test

Maan AliLast Updated: April 18, 2025

Physics Waves MCQS Online Test

ECAT Physics Waves Chapter Online Test

Total Questions:	94
Time Allowed:	40 Minutes
Total Marks:	94
How to Attempt Test:	Please choose the right Option in MCQ-type question.
Test Helpful For:	ECAT Entry Test Physics Online Test Interview Questions about Physics All Universities Entrance Test Recruitments Tests

Physics Waves Chapter Online Test

Please wait...

Page 1 of 4

Physics

1. The human ear is most sensitive in the frequency range of:

5,000 to 11,000 Hz

2,000 to 4,000 Hz

4,000 to 8,000 Hz

3,000 to 6,000 Hz

2. A particle executes SHM. The graph of its velocity as a function of displacement is

An ellipse

A circle

A hyperbola

A straight line

3. The velocity of sound in air depends upon

Pressure

Density and elasticity of gas

Wavelength of sound

Amplitude and frequency of sound

4. Waves transmit _________ from one place to another

Mass

None of these

Both

Energy

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

1 : 2

1 : 4

4 : 1

2 : 1

6. In case of a vibrating Pendulum, if the mass of the pendulum is doubled then its time period

Becomes double

Becomes one half

Remains same

Become one fourth

7. Which one is not produce by sound waves in air?

Reflection

Refraction

Polarization

Diffraction

8. Two particles A and B of equal masses are suspended from two mass less springs of spring constants k₁ and k₂ respectively. If the maximum velocities, during oscillation, are equal, the ratio of amplitudes of A and B is:

k₁/k₂

√k₂/k₁

k₂/k₁

√k₁/k₂

9. If two waves of amplitude ‘A’ produce a resultant wave of amplitude A, then the phase difference between them will be

180°

60°

120°

90°

10. In a garden, a boy is swinging in the standing position. How will the time period of the swing be affected if the boy sits down on the swing?

Time period will decrease

Time period will not change

Time period will depend on the weight of the boy.

Time period will increase

11. The total energy of a particle, executing simple harmonic moron is

Independent of x

∞√x

∞ x²

∞ x

12. Speed of sound in Water at 20°C is:

1214 ms¯¹

1567 ms¯¹

1343 ms¯¹

1483 ms¯¹

13. Which of the following changes at an antinode is a stationary wave?

Density only

Both pressure and density

Pressure only

Neither pressure nor density

14. A body with frequency f would complete one vibration in

F seconds

1 second

1/f seconds

1/T seconds

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

16.5 m

33 m

66 m

10 m

16. Velocity of sound in vacuum is

320 ms-1

224 ms-1

332 ms-1

Zero

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

156

1000

330

18. Silence zone takes place due to

Resonance

Constructive interference

Destructive interference

Beats

19. The points at which the distance separated by λ, 2λ, 3λ, ........ are

In phase

Out of phase

Sometimes in phase

None of these

20. In stationary waves

Energy is uniformly distributed

Energy is minimum at nodes and maximum at antidotes

Energy is minimum at nodes and maximum at antinodes

Alternating maximum and minimum energy producing at nodes and antinodes

21. If the period of oscillation of mass m suspended from a spring is one second, then the period of 4 m will be:

2 sec

4 sec

½ sec

¼ sec

22. The Doppler effect is produced if

The detector is in motion

None of these

Both the above

The source is in motion

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

Energy and linear momentum

Energy

Energy and mass

Energy, momentum and mass

24. One spring has force constant 200 Nm¯¹, another has force constant 500 Nm¯¹. If they are joined in series, the force constant will be nearest to

143 Nm¯¹

100 Nm¯¹

300 Nm¯¹

700 Nm¯¹

25. When the source of sound moves away form a stationary listener then _________ occurs.

An apparent decrease in frequency

No apparent change in frequency

An apparent decrease in wavelength

An apparent increase in frequency

Page 2 of 4

26. Applications of the results of scientific studies in the designs of buildings etc. is called:

Wave mechanics

Optics

Statics

Acoustics

27. Ultra Violet rays differ X rays in that ultra violet rays

Do not affect photographic plate

Cannot be polarized

Have a lower frequency

Cannot be diffracted

28. The length of the second’s pendulum on the surface of Earth is 1m. Its length on the surface of moon, where g is 1/6th the value of g on the surface of Earth, is:

1/6 m

1/36 m

36 m

6 m

29. If mass attached to a spring increases, then its time period

Decreases

Becomes Zero

Increases

Remains constant

30. The velocity of sound is greatest in

Air

Water

Metal

Vacuum

31. For production of beats the two sources must have

Different frequencies, same amplitude and same phase

Different frequencies and same amplitude

Different frequencies

Different frequencies and same phase

32. A spring-mass system oscillates with a frequency v, if it is taken in an elevator slowly accelerating upward, the frequency will

Remains same

Become zero

Decrease

Increase

33. In simple harmonic motion,

The velocity and displacement of the vibrating particle are in the same phase

The acceleration of the vibrating particle is ahead of displacement by a phase of π

The velocity of the vibrating particle is ahead in phase of the displacement by and angle π

The velocity and acceleration of the vibrating particle are in the same phase

34. The waves that require a material medium for their propagation are called

Mechanical waves

Carrier waves

Electromagnetic waves

Matter waves

35. The speed of sound in a medium depends on

The inertia property but not on the elastic property

The elastic property but not on the inertia property

The elastic property as well as the inertia property

Neither the elastic property nor the inertia property

36. A particle executes a simple harmonic motion of time period T. Find the time taken by the particle to go directly from its mean position to half the amplitude

T/2

T/12

T/4

T/8

37. A mass m attached to a spring oscillate every 2 sec. If the mass increases by 2 kg, then time period increases by 1 sec. The initial mass of the body is:

3.2 kg

12.6 kg

9.6 kg

1.6 kg

38. The gases have a

None of these

Zero elastic modulus

Smaller elastic modules

Large elastic modulus

39. Which one of the following instances are the waves plane-polarized?

Gamma rays

Infra-red radiation

Ultra-violet rays

Visible light

40. Which one of the following statements is true for the speed v and the acceleration α of a particle executing simple harmonic motion?

When v is maximum, α is zero

Value of α is zero, whatever may be the value of v

When v is maximum, α is maximum

When v is zero, α is zero

41. Which phenomena can be applied to estimate the velocity of star with respect to earth?

All of these

Interference of waves

Beats phenomena

Doppler effect

42. ‘y’ is the ratio molar specific heat at constant pressure to the molar specific heat at constant volume and has value

1.40

1.56

1.35

1.26

43. Beats are the results of

Destructive interference

Constrictive and destructive interference

Diffraction of sound waves

Polarization

44. The loudness and pitch of a sound note depends on

Intensity and velocity

Frequency and velocity

Intensity and frequency

Frequency and number of harmonic

45. To make the frequency double of a spring oscillator, we have to:

Quadruple the mass

Double the mass

Reduce the mass to one fourth

Half the mass

46. In vibratory motion which parameter remains constant?

P.E. Energy

Total Energy

Angular Momentum

K.E. Energy

47. The waves moving from a sitar to a listener in air are

Transverse progressive

Transverse stationary

Longitudinal progressive

Longitudinal stationary

48. Reflection of radar waves from the aero planes is an example of

Doppler effect

Beat phenomenon

Interference

Resonance

49. When two identical traveling waves are superimposed, the velocity of the resultant wave

Increases

Decreases

Becomes zero

Remains unchanged

50. When a stationary wave is formed then its frequency is

√2 that of the individual waves

Twice that of the individual waves

Half that of the individual waves

Same as that of the individual waves

Page 3 of 4

51. The restoring force of S.H.M. is maximum when particle:

Crossing mean position

Displacement is maximum

Half way between them

At rest

52. Doppler-effect applies to

Light wave only

Neither sound nor light wave

Both sound and light waves

Sound wave only

53. If the magnitude of displacement is numerically equal to that of acceleration, then the time period is

1 second

2π second

4π second

π second

54. The tension in the string of a simple pendulum is

Maximum in the extreme position

Constant

None of these

Zero in the mean position

55. Energy is not carried by

Stationary waves

Transverse progressive waves

Longitudinal vibration

Electromagnetic waves

56. A sine wave is represented by Q. the distance between the two particles having same maximum displacement is

2λ

λ/2

λ/4

57. The beats frequency (sensible) for a human car is

42Hz

262Hz

7Hz

256Hz

58. Decibel is unit of

x-ray radiation capacity

Intensity of light

Sound loudness

Energy of radiation

59. A pendulum suspended from the ceiling of a train has a period T when the train is at rest. When the train is accelerating with a uniform acceleration, the period of oscillation will

Remain unaffected

Decrease

Become infinite

Increase

60. The distance between node and anti-node is

2λ

λ/2

λ/4

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

1 MHz

100000 Hz

10 Hz

1 GHz

62. A system under going force vibrations is known as

None

Driven harmonic oscillator

Vibration harmonic oscillator

Frequency harmonic oscillator

63. Two springs of spring constants k₁ and k₂ are joined in series. The effective spring constant of the combination is given by

k₁+k₂

√k₁k₂

(k₁+k₂)/2

k₁ k₂/( k₁+k₂)

64. Sound waves do not travel in vacuum because

They are transverse waves

They require material medium for propagation

They do not have enough energy

They are stationary waves

65. It is possible to distinguish between transverse and longitudinal waves form the property of

Interference

Polarization

Refraction

Diffraction

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

There is a gain of energy

The energy is redistributed and the distribution changes with time

The energy is redistributed and the distribution remains constant with time

There is a loss of energy

67. For motion of a simple pendulum to be simple harmonic

None of these

Amplitude of motion will be very large

Independent of amplitude of motion

Amplitude of motion will be every small

68. A pendulum clock that keeps correct time on the Earth is taken to the Moon. It will run

√6 times slower

√6 times faster

6 times faster

At correct rate

69. The response of the human ear to the loudness of sound is _________ in nature:

Hyperbolic

Linear

Exponential

Logarithmic

70. One wavelength is the distance covered in a time is called

Oscillation Time

Time period

Reverberation

Wave

71. The velocity of sound in air not affected by changes in:

Moisture contents in air

Temperature of air

The composition of air

The atmospheric pressure

72. If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is

340 m/s

331 m/s

360 m/s

306 m/s

73. In case of a forced vibration, the resonance becomes very sharp when the

Applied periodic force is small

Restoring force is small

Damping force is small

Quality factor is small

74. In a seconds pendulum, mass of the bob is 30 gm. If it is replaced by 90 gm mass. Then its time period will be

1 s

4 s

2 s

3 s

75. In stationary waves

Energy is uniformly distributed

Energy is minimum at nodes and maximum at antinodes

Alternating maximum and minimum energy producing at nodes and antinodes

Energy is maximum at nodes and minimum at antidotes

Page 4 of 4

76. The distance between two consecutive crests or trough is called

Amplitude

Wavelength

Frequency

None of these

77. A wave is which the displacement of the wave travel perpendicular to the direction of propagation of waves is called

Progressive wave

None of these

Transverse wave

Longitudinal waves

78. What sort of waves exhibit the Doppler effect?

Sound waves

Water waves

Light waves

All of these

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

Refraction

Interference

Polarization

Reflection

80. The length of a spring is ‘α’ when a force of 4N is applied on it. The length is β when 5N force is applied. Then the length of spring when 9N force is applied is

5 β – 4 α

9 (β – α)

5α – 4β

β – α

81. Fidelity refers to

Reproduction of a CD from original copy

Reproduction of original sound

Reproduction of music

Reproduction of original image

82. When a body moves in a circle, its projection performs what type of motion?

Simple Harmonic Motion

Circular Motion

Angular Motion

Rectilinear Motion

83. The process whereby energy is dissipated from the oscillating system is called

None of these

Oscillation

Damping

Resonance

84. Waves disturbances may also come in a concentrated bundles like stock waves from an airplane flying at:

Extra supersonic speed

Supersonic speed

Sonic speed

None of these

85. When temperature increases, the frequency of a tuning fork

Remains same

Decreases

Increases or decreases depending on the material

Increases

86. If is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice.

Can penetrate the wall

Has a definite capacity

Has a definite pitch

Has a definite quality

87. The distance between node and antinode is

λ/4

2λ

λ/2

88. A sound source is moving towards stationary listener with 1/10th of the speed of sound. The ratio of apparent to real frequency is

(9/10)²

11/10

10/9

(11/10)²

89. In a progressive wave, the distance between two consecutive crests is

3/2 λ

λ/2

2 λ

90. When a gas is heated at constant pressure, its volume is increased and its density

None of these

Decreased

Increased

Increased rapidly

91. The distance between any two consecutive crests or troughs is called

Period

Wave length

Frequency

Phase difference

92. Maximum acceleration of an object in simple harmonic motion is 24 m/s² and maximum velocity is 16 m/sec. Then amplitude of SHM is

3/2 m

2/3 m

3/32 m

32/3 m

93. An oscillating mass-spring system generates

Progressive waves

None of these

Mechanical waves

Periodic waves

94. Sound waves in air always

Stationary

Longitudinal

Transverse

Electromagnetic

You Can Learn and Gain more Knowledge through our Online Quiz and Testing system Just Search your desired Preparation subject at Gotest.

Physics Current Electricity Online Quiz Test MCQs
Physics Light Online Quiz Test MCQs
Physics Physical Quantities and Units Online Quiz Test MCQs
Nuclear Physics Online Quiz Test MCQs
Modern Physics Online Quiz Test MCQs
Physics Deformation of Solids Online Quiz Test MCQs
Physics Forces Online Quiz Test MCQs
Physics Fluid Dynamics Online Quiz Test MCQs
Physics Ideal Gases Online Quiz Test MCQs
Physics Electronics Online Quiz Test MCQs

Maan AliLast Updated: April 18, 2025

Facebook Twitter Reddit WhatsApp Share via Email Print

10 Comments

TAYYABA KHALIQ says:

February 21, 2023 at 1:27 pm

hurrah!i have just passed

Yasir says:

August 28, 2020 at 11:39 pm

Q#3
Light wave is not a mechanical wave

abdullah masood says:

September 21, 2017 at 5:28 pm

99% yeah

moiz hussain says:

August 9, 2017 at 8:38 am

Hurrah 85%

kainat rani says:

July 21, 2017 at 3:12 pm

how can we attend the new mcqs for this same chapter

kainat says:

July 21, 2017 at 3:10 pm

100 /.age unbeatable

1. waqas ali says:
  
  November 20, 2021 at 6:55 pm
  
  Are you have a book of pn cadet in pdf file
  
hafiz mubashir ali says:

July 5, 2017 at 1:59 am

good

Zeeshan says:

September 17, 2016 at 6:14 pm

80% 🙂

aleena Khann says:

April 14, 2016 at 12:12 am

87% 🙂

Physics Waves Online Test

Physics Waves MCQS Online Test

ECAT Physics Waves Chapter Online Test

Physics Waves Chapter Online Test

Physics

You Might Also Like

Maan Ali

10 Comments

Leave a Reply Cancel reply

Physics Waves MCQS Online Test

ECAT Physics Waves Chapter Online Test

Physics Waves Chapter Online Test

Physics

You Might Also Like

Maan Ali

Your Related

Physics Electronics Online Quiz Test MCQs

Nuclear Physics Online Quiz Test MCQs

Modern Physics Online Quiz Test MCQs

Physics Current Electricity Online Quiz Test MCQs

Physics Deformation of Solids Online Quiz Test MCQs

Physics Fluid Dynamics Online Quiz Test MCQs

10 Comments

Leave a Reply Cancel reply