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MDCAT Physics Waves Test Online

Malik TahirLast Updated: May 26, 2025

Physics Waves MCQS Online Test

MDCAT 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.
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Physics Waves Chapter Online Test

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Page 1 of 4

Physics

1. Doppler-effect applies to

Both sound and light waves

Sound wave only

Light wave only

Neither sound nor light wave

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

Linear

Exponential

Logarithmic

Hyperbolic

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

Increased rapidly

Increased

Decreased

None of these

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

An ellipse

A circle

A hyperbola

A straight line

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

Reflection

Refraction

Diffraction

Polarization

6. For production of beats the two sources must have

Different frequencies and same amplitude

Different frequencies

Different frequencies and same phase

Different frequencies, same amplitude and same phase

7. Velocity of sound in vacuum is

320 ms-1

224 ms-1

Zero

332 ms-1

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

Beats phenomena

Interference of waves

Doppler effect

All of these

9. Silence zone takes place due to

Resonance

Destructive interference

Beats

Constructive interference

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

Transverse wave

Longitudinal waves

Progressive wave

None of these

11. Sound waves do not travel in vacuum because

They do not have enough energy

They require material medium for propagation

They are stationary waves

They are transverse waves

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

Resonance

Oscillation

Damping

None of these

13. Sound waves in air always

Transverse

Stationary

Longitudinal

Electromagnetic

14. The velocity of sound in air depends upon

Pressure

Wavelength of sound

Amplitude and frequency of sound

Density and elasticity of gas

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

262Hz

256Hz

7Hz

42Hz

16. 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

Remain unaffected

Become infinite

Decrease

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

Becomes double

Becomes one half

Become one fourth

Remains same

18. 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 quality

Has a definite pitch

19. 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 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

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

Refraction

Interference

Polarization

Diffraction

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

Resonance

Beat phenomenon

Doppler effect

Interference

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

Become zero

Decrease

Increase

Remains same

23. 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

5α – 4β

5 β – 4 α

9 (β – α)

β – α

24. Beats are the results of

Constrictive and destructive interference

Destructive interference

Polarization

Diffraction of sound waves

25. 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)/2

√k₁k₂

k₁ k₂/( k₁+k₂)

Page 2 of 4

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

5,000 to 11,000 Hz

3,000 to 6,000 Hz

2,000 to 4,000 Hz

4,000 to 8,000 Hz

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

33 m

16.5 m

66 m

10 m

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

Moisture contents in air

The composition of air

Temperature of air

The atmospheric pressure

29. 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

3 s

4 s

1 s

2 s

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

Statics

Optics

Wave mechanics

Acoustics

31. A system under going force vibrations is known as

None

Driven harmonic oscillator

Frequency harmonic oscillator

Vibration harmonic oscillator

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

λ/2

3/2 λ

2 λ

33. The distance between node and antinode is

λ/4

2λ

λ/2

34. What sort of waves exhibit the Doppler effect?

Sound waves

Light waves

Water waves

All of these

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

Supersonic speed

Extra supersonic speed

Sonic speed

None of these

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

Frequency and number of harmonic

Frequency and velocity

Intensity and velocity

Intensity and frequency

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

Period

Frequency

Wave length

Phase difference

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

Half that of the individual waves

Same as that of the individual waves

Twice that of the individual waves

√2 that of the individual waves

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

Damping force is small

Applied periodic force is small

Restoring force is small

Quality factor is small

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

1567 ms¯¹

1483 ms¯¹

1214 ms¯¹

1343 ms¯¹

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

Double the mass

Reduce the mass to one fourth

Half the mass

Quadruple the mass

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

Matter waves

Carrier waves

Mechanical waves

Electromagnetic waves

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

Becomes Zero

Remains constant

Increases

Decreases

44. In stationary waves

Alternating maximum and minimum energy producing at nodes and antinodes

Energy is uniformly distributed

Energy is minimum at nodes and maximum at antinodes

Energy is maximum at nodes and minimum at antidotes

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

None of these

Out of phase

In phase

Sometimes in phase

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

λ/2

λ/4

2λ

47. 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

2/3 m

3/2 m

3/32 m

48. An oscillating mass-spring system generates

None of these

Progressive waves

Periodic waves

Mechanical waves

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

120°

90°

180°

60°

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

Independent of x

∞√x

∞ x

∞ x²

Page 3 of 4

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

330

156

1000

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

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

When v is zero, α is zero

When v is maximum, α is maximum

When v is maximum, α is zero

53. 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

54. 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 depend on the weight of the boy.

Time period will not change

Time period will increase

55. 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

56. The gases have a

Large elastic modulus

Zero elastic modulus

Smaller elastic modules

None of these

57. Decibel is unit of

Energy of radiation

Intensity of light

x-ray radiation capacity

Sound loudness

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

Time period

Reverberation

Oscillation Time

Wave

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

Remains same

Decreases

Increases or decreases depending on the material

Increases

60. 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

61. The velocity of sound is greatest in

Air

Metal

Water

Vacuum

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

Frequency

Wavelength

None of these

Amplitude

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

Becomes zero

Decreases

Remains unchanged

Increases

64. 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:

9.6 kg

3.2 kg

1.6 kg

12.6 kg

65. 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

6 m

36 m

1/36 m

66. In vibratory motion which parameter remains constant?

K.E. Energy

Total Energy

P.E. Energy

Angular Momentum

67. 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

10/9

11/10

(11/10)²

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

The energy is redistributed and the distribution remains constant with time

There is a loss of energy

The energy is redistributed and the distribution changes with time

There is a gain of energy

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

Density only

Pressure only

Both pressure and density

Neither pressure nor density

70. 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

¼ sec

4 sec

½ sec

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

Polarization

Interference

Reflection

Refraction

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

1 second

π second

2π second

4π second

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

Transverse progressive

Transverse stationary

Longitudinal stationary

Longitudinal progressive

74. The speed of sound in a medium depends on

Neither the elastic property nor the inertia property

The elastic property as well as the inertia property

The elastic property but not on the inertia property

The inertia property but not on the elastic property

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

Energy and mass

Energy

Energy, momentum and mass

Energy and linear momentum

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

1.26

1.40

1.35

1.56

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

Infra-red radiation

Visible light

Gamma rays

Ultra-violet rays

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

100000 Hz

1 MHz

1 GHz

10 Hz

79. Energy is not carried by

Longitudinal vibration

Transverse progressive waves

Electromagnetic waves

Stationary waves

80. 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/8

T/4

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

360 m/s

340 m/s

306 m/s

331 m/s

82. 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

143 Nm¯¹

300 Nm¯¹

700 Nm¯¹

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

None of these

Independent of amplitude of motion

Amplitude of motion will be very large

Amplitude of motion will be every small

84. The distance between node and anti-node is

λ/2

λ/4

2λ

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

Constant

Maximum in the extreme position

None of these

Zero in the mean position

86. The Doppler effect is produced if

Both the above

None of these

The detector is in motion

The source is in motion

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

At rest

Displacement is maximum

Crossing mean position

Half way between them

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

1 second

1/T seconds

F seconds

1/f seconds

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

1 : 4

4 : 1

2 : 1

1 : 2

90. 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

91. Fidelity refers to

Reproduction of music

Reproduction of a CD from original copy

Reproduction of original image

Reproduction of original sound

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

Angular Motion

Circular Motion

Simple Harmonic Motion

Rectilinear Motion

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

Cannot be diffracted

Do not affect photographic plate

Have a lower frequency

Cannot be polarized

94. Waves transmit _________ from one place to another

None of these

Both

Mass

Energy

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Malik TahirLast Updated: May 26, 2025

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5 Comments

Karshma says:

December 17, 2021 at 10:42 am

I am a medical student

Talha Maqsood says:

August 20, 2021 at 12:07 pm

Sir some of your own answer are wrong please correct them

Rana Zunair Mehdi says:

July 21, 2016 at 5:12 pm

Excellent website but there is problem in the answer of a mcqs of physics sample peper no.22. mcqs of “trough” the answer is above the equilibrium position but real answer from tectbook is below the equilibrium position. thanks

1. Talha Maqsood says:
  
  August 20, 2021 at 12:08 pm
  
  Yes bro I have same problem
  
Rana Zunair Mehdi says:

July 21, 2016 at 5:06 pm

Excellent website for preparation of MCAT as it includes all the mcqs from all books . help a lot to obtain higher marks. suuccessfull website

MDCAT Physics Waves Test Online

Physics Waves MCQS Online Test

MDCAT Physics Waves Chapter Online Test

Physics Waves Chapter Online Test

Physics

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Physics Waves MCQS Online Test

MDCAT Physics Waves Chapter Online Test

Physics Waves Chapter Online Test

Physics

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