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

Do not affect photographic plate

Cannot be diffracted

Cannot be polarized

Have a lower frequency

2. In stationary waves

Energy is minimum at nodes and maximum at antinodes

Energy is uniformly distributed

Alternating maximum and minimum energy producing at nodes and antinodes

Energy is maximum at nodes and minimum at antidotes

3. 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.

Has a definite quality

Has a definite capacity

Has a definite pitch

Can penetrate the wall

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

Doppler effect

Beats phenomena

Interference of waves

All of these

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

There is a gain of energy

There is a loss of energy

The energy is redistributed and the distribution changes with time

The energy is redistributed and the distribution remains constant with time

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

Amplitude of motion will be every small

Independent of amplitude of motion

None of these

Amplitude of motion will be very large

7. The distance between node and anti-node is

λ/4

λ/2

2λ

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

Decreases

Increases

Becomes zero

Remains unchanged

9. 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

100 Nm¯¹

300 Nm¯¹

143 Nm¯¹

700 Nm¯¹

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

Acoustics

Wave mechanics

Optics

Statics

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

Mechanical waves

Matter waves

Carrier waves

Electromagnetic waves

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

Density only

Pressure only

Both pressure and density

Neither pressure nor density

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

√6 times slower

At correct rate

6 times faster

√6 times faster

14. 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

32/3 m

3/32 m

2/3 m

3/2 m

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

Zero in the mean position

Constant

Maximum in the extreme position

None of these

16. In vibratory motion which parameter remains constant?

K.E. Energy

P.E. Energy

Total Energy

Angular Momentum

17. A system under going force vibrations is known as

Vibration harmonic oscillator

Frequency harmonic oscillator

Driven harmonic oscillator

None

18. 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/12

T/2

T/4

T/8

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

¼ sec

4 sec

2 sec

½ sec

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

Time period

Reverberation

Wave

Oscillation Time

21. The distance between node and antinode is

2λ

λ/4

λ/2

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

1 : 4

1 : 2

4 : 1

2 : 1

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

2 λ

3/2 λ

λ/2

24. Waves transmit _________ from one place to another

Mass

Energy

Both

None of these

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

5,000 to 11,000 Hz

4,000 to 8,000 Hz

2,000 to 4,000 Hz

3,000 to 6,000 Hz

Page 2 of 4

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

Reflection

Refraction

Interference

Polarization

27. 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

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

Decrease

Remains same

Become zero

Increase

29. 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

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

Diffraction

Refraction

Interference

Polarization

31. The speed of sound in a medium depends on

The elastic property as well as the inertia property

Neither the elastic property nor the inertia property

The elastic property but not on the inertia property

The inertia property but not on the elastic property

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

Quality factor is small

Damping force is small

Restoring force is small

Applied periodic force is small

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

10 m

66 m

33 m

16.5 m

34. 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:

1.6 kg

3.2 kg

9.6 kg

12.6 kg

35. The velocity of sound is greatest in

Metal

Water

Vacuum

Air

36. 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

Increase

Become infinite

Decrease

Remain unaffected

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

1214 ms¯¹

1483 ms¯¹

1343 ms¯¹

1567 ms¯¹

38. Velocity of sound in vacuum is

224 ms-1

Zero

332 ms-1

320 ms-1

39. 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 not change

Time period will depend on the weight of the boy.

Time period will increase

Time period will decrease

40. In stationary waves

Energy is uniformly distributed

Energy is minimum at nodes and maximum at antinodes

Energy is minimum at nodes and maximum at antidotes

Alternating maximum and minimum energy producing at nodes and antinodes

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

1/T seconds

F seconds

1/f seconds

1 second

42. Sound waves do not travel in vacuum because

They are transverse waves

They do not have enough energy

They require material medium for propagation

They are stationary waves

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

Longitudinal stationary

Transverse progressive

Transverse stationary

Longitudinal progressive

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

Interference

Beat phenomenon

Resonance

Doppler effect

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

1000

156

330

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

Logarithmic

Linear

Exponential

Hyperbolic

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

Half that of the individual waves

Twice that of the individual waves

√2 that of the individual waves

Same as that of the individual waves

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

120°

90°

60°

180°

49. The Doppler effect is produced if

Both the above

The source is in motion

None of these

The detector is in motion

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

7Hz

262Hz

42Hz

256Hz

Page 3 of 4

51. Doppler-effect applies to

Neither sound nor light wave

Sound wave only

Light wave only

Both sound and light waves

52. 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:

1/36 m

6 m

1/6 m

36 m

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

Diffraction

Polarization

Refraction

Reflection

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

A circle

An ellipse

A straight line

A hyperbola

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

Displacement is maximum

At rest

Crossing mean position

Half way between them

56. Beats are the results of

Diffraction of sound waves

Polarization

Constrictive and destructive interference

Destructive interference

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

331 m/s

360 m/s

340 m/s

306 m/s

58. 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

59. The gases have a

None of these

Smaller elastic modules

Large elastic modulus

Zero elastic modulus

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

Extra supersonic speed

Sonic speed

None of these

Supersonic speed

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

k₁ k₂/( k₁+k₂)

√k₁k₂

(k₁+k₂)/2

k₁+k₂

62. The velocity of sound in air depends upon

Amplitude and frequency of sound

Density and elasticity of gas

Pressure

Wavelength of sound

63. 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

β – α

5α – 4β

9 (β – α)

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

Phase difference

Wave length

Period

Frequency

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

Moisture contents in air

Temperature of air

The atmospheric pressure

The composition of air

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

π second

1 second

4π second

2π second

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

An apparent decrease in wavelength

An apparent increase in frequency

No apparent change in frequency

An apparent decrease in frequency

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

∞ x

∞ x²

∞√x

Independent of x

69. Energy is not carried by

Longitudinal vibration

Transverse progressive waves

Electromagnetic waves

Stationary waves

70. Fidelity refers to

Reproduction of a CD from original copy

Reproduction of original sound

Reproduction of original image

Reproduction of music

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

Decreases

Increases

Increases or decreases depending on the material

Remains same

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

100000 Hz

1 MHz

10 Hz

1 GHz

73. What sort of waves exhibit the Doppler effect?

Light waves

Water waves

Sound waves

All of these

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

Become one fourth

Becomes one half

Remains same

Becomes double

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

None of these

Resonance

Oscillation

Damping

Page 4 of 4

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

1.40

1.26

1.56

1.35

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

Amplitude

Wavelength

Frequency

None of these

78. Decibel is unit of

Energy of radiation

Intensity of light

Sound loudness

x-ray radiation capacity

79. Silence zone takes place due to

Beats

Destructive interference

Constructive interference

Resonance

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

In phase

None of these

Sometimes in phase

Out of phase

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

Intensity and frequency

Frequency and velocity

Intensity and velocity

Frequency and number of harmonic

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

Increased rapidly

None of these

Increased

Decreased

83. An oscillating mass-spring system generates

Periodic waves

None of these

Progressive waves

Mechanical waves

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

Angular Motion

Simple Harmonic Motion

Circular Motion

Rectilinear Motion

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

Ultra-violet rays

Infra-red radiation

Visible light

Gamma rays

86. Sound waves in air always

Transverse

Electromagnetic

Longitudinal

Stationary

87. In simple harmonic motion,

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

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

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

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

88. 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

4 s

1 s

3 s

2 s

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

Quadruple the mass

Half the mass

Double the mass

Reduce the mass to one fourth

90. 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 zero, α is zero

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

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

λ/4

λ/2

2λ

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

Increases

Becomes Zero

Decreases

Remains constant

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

Energy

Energy and linear momentum

Energy, momentum and mass

Energy and mass

94. 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:

k₂/k₁

√k₂/k₁

√k₁/k₂

k₁/k₂

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

Nuclear Physics Online Quiz Test MCQs

Physics Physical Quantities and Units Online Quiz Test MCQs

Physics Light Online Quiz Test MCQs

Physics Electronics Online Quiz Test MCQs

Physics Magnetism and Electromagnetism Online Quiz Test MCQs

Modern Physics Online Quiz Test MCQs

10 Comments

Leave a Reply Cancel reply