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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. Speed of sound in Water at 20°C is:

1343 ms¯¹

1567 ms¯¹

1214 ms¯¹

1483 ms¯¹

2. The velocity of sound in air depends upon

Pressure

Wavelength of sound

Density and elasticity of gas

Amplitude and frequency of sound

3. 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

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

Beats phenomena

All of these

Doppler effect

Interference of waves

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

Oscillation

None of these

Resonance

Damping

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

Oscillation Time

Time period

Reverberation

Wave

7. In vibratory motion which parameter remains constant?

P.E. Energy

Angular Momentum

Total Energy

K.E. Energy

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

√k₁k₂

k₁ k₂/( k₁+k₂)

k₁+k₂

(k₁+k₂)/2

9. Beats are the results of

Polarization

Destructive interference

Diffraction of sound waves

Constrictive and destructive interference

10. 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

11. The distance between node and antinode is

2λ

λ/2

λ/4

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

10 m

16.5 m

33 m

66 m

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

Crossing mean position

At rest

Displacement is maximum

Half way between them

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

Polarization

Refraction

Interference

Reflection

15. 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

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

At correct rate

√6 times slower

√6 times faster

6 times faster

17. Doppler-effect applies to

Light wave only

Neither sound nor light wave

Sound wave only

Both sound and light waves

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

Decreases

Increases

Remains unchanged

Becomes zero

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

Intensity and frequency

Frequency and velocity

Frequency and number of harmonic

Intensity and velocity

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

A hyperbola

An ellipse

A straight line

A circle

21. In stationary waves

Energy is minimum at nodes and maximum at antidotes

Energy is uniformly distributed

Energy is minimum at nodes and maximum at antinodes

Alternating maximum and minimum energy producing at nodes and antinodes

22. The Doppler effect is produced if

The source is in motion

The detector is in motion

Both the above

None of these

23. Waves transmit _________ from one place to another

Energy

Mass

None of these

Both

24. Decibel is unit of

x-ray radiation capacity

Sound loudness

Energy of radiation

Intensity of light

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

The atmospheric pressure

Temperature of air

The composition of air

Moisture contents in air

Page 2 of 4

26. Sound waves do not travel in vacuum because

They are transverse waves

They require material medium for propagation

They are stationary waves

They do not have enough energy

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

Supersonic speed

Sonic speed

Extra supersonic speed

None of these

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

2,000 to 4,000 Hz

4,000 to 8,000 Hz

5,000 to 11,000 Hz

3,000 to 6,000 Hz

29. Fidelity refers to

Reproduction of music

Reproduction of original sound

Reproduction of a CD from original copy

Reproduction of original image

30. Silence zone takes place due to

Constructive interference

Resonance

Beats

Destructive interference

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

Wave length

Period

Frequency

Phase difference

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

The energy is redistributed and the distribution changes with time

There is a gain of energy

There is a loss of energy

The energy is redistributed and the distribution remains constant with time

33. 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

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

Infra-red radiation

Ultra-violet rays

Visible light

Gamma rays

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

60°

120°

90°

180°

36. The speed of sound in a medium depends on

The elastic property but not on the inertia property

Neither the elastic property nor the inertia property

The elastic property as well as the inertia property

The inertia property but not on the elastic property

37. In stationary waves

Energy is uniformly distributed

Energy is maximum at nodes and minimum at antidotes

Energy is minimum at nodes and maximum at antinodes

Alternating maximum and minimum energy producing at nodes and antinodes

38. 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

Increase

Become infinite

Decrease

39. 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 pitch

Can penetrate the wall

Has a definite capacity

Has a definite quality

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

Matter waves

Mechanical waves

Electromagnetic waves

Carrier waves

41. Velocity of sound in vacuum is

332 ms-1

Zero

320 ms-1

224 ms-1

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

None of these

Amplitude of motion will be very large

Amplitude of motion will be every small

Independent of amplitude of motion

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

Out of phase

Sometimes in phase

None of these

In phase

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

Half that of the individual waves

√2 that of the individual waves

Twice that of the individual waves

Same as that of the individual waves

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

2 λ

3/2 λ

λ/2

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

∞ x

Independent of x

∞ x²

∞√x

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

Diffraction

Refraction

Reflection

Polarization

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

Optics

Acoustics

Wave mechanics

Statics

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

Increased rapidly

None of these

Increased

Decreased

50. An oscillating mass-spring system generates

Periodic waves

Progressive waves

Mechanical waves

None of these

Page 3 of 4

51. 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

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

Interference

Resonance

Beat phenomenon

Doppler effect

53. 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 depend on the weight of the boy.

Time period will decrease

Time period will not change

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

Longitudinal progressive

Longitudinal stationary

Transverse progressive

Transverse stationary

55. The distance between node and anti-node is

λ/2

λ/4

2λ

56. 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

57. What sort of waves exhibit the Doppler effect?

Light waves

Water waves

Sound waves

All of these

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

Maximum in the extreme position

None of these

Constant

Zero in the mean position

59. 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

700 Nm¯¹

300 Nm¯¹

143 Nm¯¹

100 Nm¯¹

60. 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

3 s

2 s

4 s

61. Energy is not carried by

Longitudinal vibration

Transverse progressive waves

Electromagnetic waves

Stationary waves

62. The gases have a

Zero elastic modulus

Smaller elastic modules

None of these

Large elastic modulus

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

7Hz

42Hz

256Hz

262Hz

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

π second

2π second

1 second

4π second

65. In simple harmonic motion,

The velocity and acceleration 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

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

66. 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

360 m/s

331 m/s

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

Amplitude

Frequency

Wavelength

None of these

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

(11/10)²

(9/10)²

11/10

10/9

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

10 Hz

100000 Hz

1 GHz

1 MHz

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

Becomes Zero

Increases

Decreases

Remains constant

71. 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

72. 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

9 (β – α)

5 β – 4 α

β – α

73. 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

3/2 m

2/3 m

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

Damping force is small

Restoring force is small

Quality factor is small

Applied periodic force is small

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

Linear

Logarithmic

Exponential

Hyperbolic

Page 4 of 4

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

Energy and mass

Energy, momentum and mass

Energy

Energy and linear momentum

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

Simple Harmonic Motion

Rectilinear Motion

Angular Motion

Circular Motion

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

Pressure only

Neither pressure nor density

Density only

Both pressure and density

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

F seconds

1/T seconds

1/f seconds

1 second

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

330

1000

156

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

λ/2

2λ

λ/4

82. ‘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

1.26

1.35

83. 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

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

84. 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

85. 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

√k₁/k₂

k₁/k₂

√k₂/k₁

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

½ sec

4 sec

¼ sec

2 sec

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

Diffraction

Polarization

Refraction

Interference

88. A system under going force vibrations is known as

None

Frequency harmonic oscillator

Driven harmonic oscillator

Vibration harmonic oscillator

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

Remains same

Increases

Decreases

Increases or decreases depending on the material

90. 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/4

T/8

T/2

T/12

91. The velocity of sound is greatest in

Water

Vacuum

Metal

Air

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

Have a lower frequency

Cannot be polarized

Do not affect photographic plate

Cannot be diffracted

93. 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

94. Sound waves in air always

Transverse

Longitudinal

Stationary

Electromagnetic

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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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