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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. A system under going force vibrations is known as

None

Frequency harmonic oscillator

Driven harmonic oscillator

Vibration harmonic oscillator

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

60°

90°

180°

120°

3. In vibratory motion which parameter remains constant?

Angular Momentum

K.E. Energy

Total Energy

P.E. Energy

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

330

156

1000

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

Polarization

Diffraction

Reflection

Refraction

6. 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

There is a gain of energy

The energy is redistributed and the distribution changes with time

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

306 m/s

340 m/s

331 m/s

360 m/s

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

Energy, momentum and mass

Energy

Energy and mass

Energy and linear momentum

9. 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

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

256Hz

7Hz

262Hz

42Hz

11. Sound waves in air always

Longitudinal

Transverse

Electromagnetic

Stationary

12. 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)²

11/10

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

None of these

Amplitude

Frequency

Wavelength

14. Beats are the results of

Destructive interference

Polarization

Diffraction of sound waves

Constrictive and destructive interference

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

Independent of amplitude of motion

Amplitude of motion will be every small

Amplitude of motion will be very large

None of these

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

Interference of waves

Beats phenomena

All of these

Doppler effect

17. 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

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

100000 Hz

10 Hz

1 MHz

1 GHz

19. What sort of waves exhibit the Doppler effect?

Sound waves

Light waves

Water waves

All of these

20. The distance between node and antinode is

λ/2

2λ

λ/4

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

Resonance

Oscillation

None of these

Damping

22. An oscillating mass-spring system generates

Mechanical waves

None of these

Progressive waves

Periodic waves

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

1.56

1.26

1.35

1.40

24. 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 pitch

Has a definite quality

Has a definite capacity

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

Becomes zero

Increases

Decreases

Remains unchanged

Page 2 of 4

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

10 m

16.5 m

66 m

33 m

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

1567 ms¯¹

1214 ms¯¹

1343 ms¯¹

1483 ms¯¹

28. In simple harmonic motion,

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

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

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

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

∞ x

∞√x

∞ x²

Independent of x

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

Longitudinal progressive

Transverse progressive

Longitudinal stationary

Transverse stationary

31. For production of beats the two sources must have

Different frequencies and same phase

Different frequencies, same amplitude and same phase

Different frequencies

Different frequencies and same amplitude

32. The velocity of sound in air depends upon

Density and elasticity of gas

Amplitude and frequency of sound

Pressure

Wavelength of sound

33. Energy is not carried by

Stationary waves

Electromagnetic waves

Longitudinal vibration

Transverse progressive waves

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

F seconds

1 second

1/f seconds

1/T seconds

35. Waves transmit _________ from one place to another

Mass

None of these

Both

Energy

36. 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

300 Nm¯¹

143 Nm¯¹

100 Nm¯¹

700 Nm¯¹

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

Polarization

Reflection

Refraction

Interference

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

λ/2

λ/4

2λ

39. Sound waves do not travel in vacuum because

They require material medium for propagation

They do not have enough energy

They are stationary waves

They are transverse waves

40. The gases have a

None of these

Zero elastic modulus

Large elastic modulus

Smaller elastic modules

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

λ/2

2 λ

3/2 λ

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

Restoring force is small

Applied periodic force is small

Damping force is small

Quality factor is small

43. Doppler-effect applies to

Sound wave only

Neither sound nor light wave

Both sound and light waves

Light wave only

44. 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:

6 m

1/6 m

1/36 m

36 m

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

Interference

Polarization

Refraction

Diffraction

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

3,000 to 6,000 Hz

5,000 to 11,000 Hz

4,000 to 8,000 Hz

2,000 to 4,000 Hz

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

None of these

Maximum in the extreme position

Constant

Zero in the mean position

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

Circular Motion

Angular Motion

Rectilinear Motion

Simple Harmonic Motion

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

Hyperbolic

Linear

Exponential

Logarithmic

50. In stationary waves

Energy is uniformly distributed

Energy is minimum at nodes and maximum at antidotes

Alternating maximum and minimum energy producing at nodes and antinodes

Energy is minimum at nodes and maximum at antinodes

Page 3 of 4

51. The Doppler effect is produced if

The source is in motion

None of these

Both the above

The detector is in motion

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

No apparent change in frequency

An apparent decrease in frequency

An apparent decrease in wavelength

An apparent increase in frequency

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

Increases

Remains constant

Decreases

Becomes Zero

54. 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

2 s

3 s

1 s

55. 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

56. Velocity of sound in vacuum is

332 ms-1

320 ms-1

Zero

224 ms-1

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

Sometimes in phase

In phase

None of these

Out of phase

58. Silence zone takes place due to

Constructive interference

Destructive interference

Beats

Resonance

59. The speed of sound in a medium depends on

Neither the elastic property nor the inertia property

The elastic property but not on the inertia property

The elastic property as well as the inertia property

The inertia property but not on the elastic property

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

Displacement is maximum

Crossing mean position

Half way between them

At rest

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

4 sec

2 sec

½ sec

¼ sec

62. 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/8

T/4

T/12

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

Beat phenomenon

Resonance

Interference

Doppler effect

64. The velocity of sound is greatest in

Water

Vacuum

Air

Metal

65. 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

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

Wave

Reverberation

Time period

Oscillation Time

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

Progressive wave

Transverse wave

Longitudinal waves

None of these

68. 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

69. The distance between node and anti-node is

λ/4

2λ

λ/2

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

Ultra-violet rays

Infra-red radiation

Gamma rays

Visible light

71. 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

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

Density only

Neither pressure nor density

Pressure only

Both pressure and density

73. 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

1.6 kg

9.6 kg

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

Mechanical waves

Matter waves

Electromagnetic waves

Carrier waves

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

(k₁+k₂)/2

k₁ k₂/( k₁+k₂)

k₁+k₂

√k₁k₂

Page 4 of 4

76. 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 increase

Time period will decrease

Time period will not change

Time period will depend on the weight of the boy.

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

Frequency and number of harmonic

Frequency and velocity

Intensity and frequency

Intensity and velocity

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

Decrease

Become zero

Remains same

Increase

79. 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

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

4 : 1

1 : 2

1 : 4

2 : 1

81. 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

β – α

9 (β – α)

5 β – 4 α

5α – 4β

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

Sonic speed

None of these

Supersonic speed

Extra supersonic speed

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

Phase difference

Wave length

Frequency

Period

84. 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 maximum

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

When v is maximum, α is zero

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

Wave mechanics

Acoustics

Statics

Optics

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

Same as that of the individual waves

√2 that of the individual waves

Half that of the individual waves

Twice that of the individual waves

87. Decibel is unit of

x-ray radiation capacity

Sound loudness

Intensity of light

Energy of radiation

88. Fidelity refers to

Reproduction of music

Reproduction of a CD from original copy

Reproduction of original sound

Reproduction of original image

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

Increased rapidly

Decreased

None of these

Increased

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

A hyperbola

A straight line

An ellipse

A circle

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

Become one fourth

Becomes double

Becomes one half

Remains same

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

Half the mass

Reduce the mass to one fourth

Quadruple the mass

Double the mass

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

Decreases

Remains same

Increases

Increases or decreases depending on the material

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

The composition of air

Moisture contents in air

Temperature of air

The atmospheric pressure

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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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