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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. Silence zone takes place due to

Beats

Resonance

Destructive interference

Constructive interference

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

√6 times faster

At correct rate

6 times faster

√6 times slower

3. The speed of sound in a medium depends on

The elastic property but not on the inertia property

The elastic property as well as the inertia property

Neither the elastic property nor the inertia property

The inertia property but not on the elastic property

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

Optics

Statics

Acoustics

Wave mechanics

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

Cannot be diffracted

Cannot be polarized

Do not affect photographic plate

Have a lower frequency

6. ‘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

7. Beats are the results of

Diffraction of sound waves

Destructive interference

Constrictive and destructive interference

Polarization

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

Sometimes in phase

None of these

Out of phase

In phase

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

Half the mass

Reduce the mass to one fourth

Double the mass

Quadruple the mass

10. 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

9 (β – α)

5α – 4β

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

Circular Motion

Angular Motion

Rectilinear Motion

Simple Harmonic Motion

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

Applied periodic force is small

Damping force is small

Restoring force is small

Quality factor is small

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

Beat phenomenon

Interference

Resonance

Doppler effect

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

Logarithmic

Linear

Exponential

Hyperbolic

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

Frequency and velocity

Intensity and frequency

Intensity and velocity

Frequency and number of harmonic

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

2 λ

3/2 λ

λ/2

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

An apparent increase in frequency

An apparent decrease in frequency

No apparent change in frequency

An apparent decrease in wavelength

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

The composition of air

Moisture contents in air

The atmospheric pressure

Temperature of air

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

1000

330

156

20. The gases have a

Large elastic modulus

Smaller elastic modules

Zero elastic modulus

None of these

21. The Doppler effect is produced if

Both the above

The source is in motion

The detector is in motion

None of these

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

Amplitude of motion will be every small

None of these

Independent of amplitude of motion

Amplitude of motion will be very large

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

None of these

Maximum in the extreme position

Zero in the mean position

Constant

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

100000 Hz

1 GHz

10 Hz

1 MHz

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

360 m/s

306 m/s

331 m/s

340 m/s

Page 2 of 4

26. 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

2/3 m

3/32 m

32/3 m

3/2 m

27. The velocity of sound is greatest in

Water

Vacuum

Air

Metal

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

33 m

16.5 m

66 m

10 m

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

There is a loss of energy

The energy is redistributed and the distribution changes with time

There is a gain of energy

The energy is redistributed and the distribution remains constant with time

30. Sound waves in air always

Stationary

Transverse

Longitudinal

Electromagnetic

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

Both pressure and density

Density only

Neither pressure nor density

Pressure only

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

Longitudinal progressive

Longitudinal stationary

Transverse stationary

Transverse progressive

33. In stationary waves

Energy is minimum at nodes and maximum at antinodes

Energy is minimum at nodes and maximum at antidotes

Energy is uniformly distributed

Alternating maximum and minimum energy producing at nodes and antinodes

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

Extra supersonic speed

Sonic speed

Supersonic speed

None of these

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

7Hz

262Hz

256Hz

42Hz

36. Sound waves do not travel in vacuum because

They are transverse waves

They do not have enough energy

They are stationary waves

They require material medium for propagation

37. 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

38. In simple harmonic motion,

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

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

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

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

A straight line

A circle

An ellipse

A hyperbola

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

Resonance

None of these

Oscillation

Damping

41. 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

2 s

1 s

3 s

4 s

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

Polarization

Refraction

Interference

Diffraction

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

Displacement is maximum

Half way between them

Crossing mean position

At rest

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

Diffraction

Reflection

Refraction

Polarization

45. Fidelity refers to

Reproduction of a CD from original copy

Reproduction of music

Reproduction of original sound

Reproduction of original image

46. 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

143 Nm¯¹

300 Nm¯¹

700 Nm¯¹

100 Nm¯¹

47. 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

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

None of these

Increased rapidly

Increased

Decreased

49. Decibel is unit of

Sound loudness

Energy of radiation

Intensity of light

x-ray radiation capacity

50. 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

1.6 kg

3.2 kg

12.6 kg

Page 3 of 4

51. The distance between node and anti-node is

2λ

λ/2

λ/4

52. The distance between node and antinode is

2λ

λ/4

λ/2

53. The velocity of sound in air depends upon

Amplitude and frequency of sound

Density and elasticity of gas

Wavelength of sound

Pressure

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

Phase difference

Frequency

Wave length

Period

55. In vibratory motion which parameter remains constant?

Angular Momentum

K.E. Energy

Total Energy

P.E. Energy

56. An oscillating mass-spring system generates

None of these

Progressive waves

Periodic waves

Mechanical waves

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

Remains unchanged

Becomes zero

Increases

Decreases

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

2λ

λ/2

λ/4

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

∞ x

Independent of x

∞√x

∞ x²

60. Velocity of sound in vacuum is

224 ms-1

332 ms-1

Zero

320 ms-1

61. 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/8

T/4

T/12

T/2

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

Polarization

Reflection

Refraction

Interference

63. 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

64. For production of beats the two sources must have

Different frequencies, same amplitude and same phase

Different frequencies and same phase

Different frequencies

Different frequencies and same amplitude

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

Decreases

Becomes Zero

Remains constant

Increases

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

None of these

Wavelength

Amplitude

Frequency

67. Doppler-effect applies to

Light wave only

Neither sound nor light wave

Sound wave only

Both sound and light waves

68. A system under going force vibrations is known as

None

Frequency harmonic oscillator

Vibration harmonic oscillator

Driven harmonic oscillator

69. 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

70. Waves transmit _________ from one place to another

Mass

Both

None of these

Energy

71. Energy is not carried by

Transverse progressive waves

Longitudinal vibration

Electromagnetic waves

Stationary waves

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

1214 ms¯¹

1483 ms¯¹

1343 ms¯¹

1567 ms¯¹

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

Longitudinal waves

None of these

Progressive wave

Transverse wave

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

Mechanical waves

Electromagnetic waves

Carrier waves

Matter waves

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

All of these

Doppler effect

Beats phenomena

Interference of waves

Page 4 of 4

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

Oscillation Time

Time period

Wave

Reverberation

77. 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 not change

Time period will depend on the weight of the boy.

Time period will increase

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

Infra-red radiation

Visible light

Ultra-violet rays

Gamma rays

79. 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

80. 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

Increase

Decrease

Remain unaffected

81. In stationary waves

Energy is uniformly distributed

Energy is maximum at nodes and minimum at antidotes

Alternating maximum and minimum energy producing at nodes and antinodes

Energy is minimum at nodes and maximum at antinodes

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

Increases

Increases or decreases depending on the material

Decreases

Remains same

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

120°

60°

180°

90°

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

Increase

Remains same

Become zero

Decrease

85. 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

36 m

1/36 m

6 m

86. 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)²

10/9

11/10

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

1 : 4

2 : 1

4 : 1

1 : 2

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

π second

4π second

2π second

1 second

89. 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

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

k₁/k₂

√k₂/k₁

k₂/k₁

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

1/f seconds

F seconds

1/T seconds

1 second

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

Half that of the individual waves

Twice that of the individual waves

Same as that of the individual waves

√2 that of the individual waves

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

2,000 to 4,000 Hz

3,000 to 6,000 Hz

5,000 to 11,000 Hz

4,000 to 8,000 Hz

94. What sort of waves exhibit the Doppler effect?

Sound waves

Light waves

Water waves

All of these

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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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