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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. 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 minimum at nodes and maximum at antidotes

2. The Doppler effect is produced if

The detector is in motion

None of these

The source is in motion

Both the above

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

Decrease

Increase

Become zero

Remains same

4. The distance between node and antinode is

λ/4

2λ

λ/2

5. Silence zone takes place due to

Beats

Resonance

Constructive interference

Destructive interference

6. 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

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

1/f seconds

1 second

F seconds

1/T seconds

8. 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

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

Become one fourth

Remains same

Becomes one half

Becomes double

10. Decibel is unit of

Intensity of light

Energy of radiation

x-ray radiation capacity

Sound loudness

11. 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:

12.6 kg

9.6 kg

1.6 kg

3.2 kg

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

1343 ms¯¹

1567 ms¯¹

1214 ms¯¹

1483 ms¯¹

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

340 m/s

360 m/s

306 m/s

331 m/s

14. 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

√k₁/k₂

√k₂/k₁

k₂/k₁

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

Increased

Decreased

None of these

Increased rapidly

16. Doppler-effect applies to

Light wave only

Neither sound nor light wave

Both sound and light waves

Sound wave only

17. Sound waves do not travel in vacuum because

They require material medium for propagation

They are stationary waves

They are transverse waves

They do not have enough energy

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

3/2 λ

2 λ

λ/2

19. A system under going force vibrations is known as

None

Driven harmonic oscillator

Vibration harmonic oscillator

Frequency harmonic oscillator

20. Fidelity refers to

Reproduction of original image

Reproduction of music

Reproduction of original sound

Reproduction of a CD from original copy

21. Energy is not carried by

Transverse progressive waves

Electromagnetic waves

Stationary waves

Longitudinal vibration

22. 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

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

Transverse stationary

Transverse progressive

Longitudinal stationary

Longitudinal progressive

24. Waves transmit _________ from one place to another

Both

Mass

Energy

None of these

25. 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

There is a loss of energy

The energy is redistributed and the distribution remains constant with time

Page 2 of 4

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

10 m

33 m

66 m

16.5 m

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

π second

2π second

4π second

1 second

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

Increases

Decreases

Remains same

Increases or decreases depending on the material

29. 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

Become infinite

Decrease

Increase

Remain unaffected

30. In vibratory motion which parameter remains constant?

Angular Momentum

K.E. Energy

P.E. Energy

Total Energy

31. 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

3 s

2 s

1 s

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

42Hz

256Hz

262Hz

7Hz

33. The speed of sound in a medium depends on

The inertia property but not on the elastic property

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

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

Supersonic speed

Extra supersonic speed

None of these

Sonic speed

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

Wavelength

Frequency

None of these

Amplitude

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

Remains unchanged

Increases

Decreases

Becomes zero

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

Wave

Reverberation

Oscillation Time

Time period

38. ‘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

1.56

1.35

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

Progressive wave

Longitudinal waves

None of these

Transverse wave

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 zero, α is zero

When v is maximum, α is maximum

When v is maximum, α is zero

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

41. 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/8

T/2

T/4

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

Diffraction

Polarization

Refraction

Interference

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

Frequency

Phase difference

Wave length

Period

44. 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

√k₁k₂

k₁+k₂

k₁ k₂/( k₁+k₂)

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

Double the mass

Half the mass

Quadruple the mass

Reduce the mass to one fourth

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

Amplitude of motion will be every small

Independent of amplitude of motion

Amplitude of motion will be very large

None of these

47. 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

(11/10)²

10/9

(9/10)²

48. Velocity of sound in vacuum is

224 ms-1

Zero

320 ms-1

332 ms-1

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

None of these

Sometimes in phase

Out of phase

In phase

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

10 Hz

100000 Hz

1 MHz

1 GHz

Page 3 of 4

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

Interference

Reflection

Polarization

Refraction

52. 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

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

An ellipse

A circle

A hyperbola

A straight line

54. The gases have a

Zero elastic modulus

None of these

Smaller elastic modules

Large elastic modulus

55. 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

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

Statics

Acoustics

Wave mechanics

Optics

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

Doppler effect

Interference of waves

All of these

Beats phenomena

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

Energy, momentum and mass

Energy and linear momentum

Energy and mass

Energy

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

Electromagnetic waves

Carrier waves

Mechanical waves

Matter waves

60. 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

β – α

9 (β – α)

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

4 : 1

1 : 4

2 : 1

1 : 2

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

Beat phenomenon

Interference

Resonance

Doppler effect

63. Beats are the results of

Destructive interference

Diffraction of sound waves

Constrictive and destructive interference

Polarization

64. For production of beats the two sources must have

Different frequencies and same phase

Different frequencies

Different frequencies, same amplitude and same phase

Different frequencies and same amplitude

65. The velocity of sound in air depends upon

Pressure

Density and elasticity of gas

Wavelength of sound

Amplitude and frequency of sound

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

Maximum in the extreme position

None of these

Constant

Zero in the mean position

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

√2 that of the individual waves

Half that of the individual waves

Twice that of the individual waves

Same as that of the individual waves

68. The distance between node and anti-node is

λ/4

λ/2

2λ

69. 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

700 Nm¯¹

100 Nm¯¹

143 Nm¯¹

70. 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

71. In simple harmonic motion,

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

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

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

Becomes Zero

Decreases

Remains constant

Increases

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

60°

180°

90°

120°

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

λ/2

λ/4

2λ

75. 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

Page 4 of 4

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

Oscillation

Damping

Resonance

None of these

77. An oscillating mass-spring system generates

None of these

Progressive waves

Periodic waves

Mechanical waves

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

Intensity and velocity

Frequency and number of harmonic

Intensity and frequency

Frequency and velocity

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

Both pressure and density

Pressure only

Neither pressure nor density

Density only

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

Simple Harmonic Motion

Angular Motion

Circular Motion

Rectilinear Motion

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

Visible light

Ultra-violet rays

Infra-red radiation

Gamma rays

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

Half way between them

Displacement is maximum

Crossing mean position

At rest

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

An apparent decrease in wavelength

An apparent increase in frequency

An apparent decrease in frequency

No apparent change in frequency

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

At correct rate

√6 times faster

√6 times slower

6 times faster

85. The velocity of sound is greatest in

Air

Water

Vacuum

Metal

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

1000

156

330

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

Linear

Logarithmic

Hyperbolic

Exponential

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

Diffraction

Refraction

Reflection

Polarization

89. 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 increase

Time period will not change

Time period will depend on the weight of the boy.

90. What sort of waves exhibit the Doppler effect?

Sound waves

Water waves

Light waves

All of these

91. In stationary waves

Energy is maximum at nodes and minimum at antidotes

Energy is uniformly distributed

Alternating maximum and minimum energy producing at nodes and antinodes

Energy is minimum at nodes and maximum at antinodes

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

∞ x

Independent of x

∞√x

∞ x²

93. Sound waves in air always

Transverse

Electromagnetic

Stationary

Longitudinal

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

The atmospheric pressure

Moisture contents in air

The composition of air

Temperature of air

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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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Malik Tahir

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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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