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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. 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 inertia property but not on the elastic property

The elastic property as well as the inertia property

2. 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

3. Beats are the results of

Polarization

Constrictive and destructive interference

Diffraction of sound waves

Destructive interference

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

2λ

λ/2

λ/4

5. In vibratory motion which parameter remains constant?

Total Energy

K.E. Energy

Angular Momentum

P.E. Energy

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

Remains same

Become one fourth

Becomes double

Becomes one half

7. A system under going force vibrations is known as

Frequency harmonic oscillator

None

Driven harmonic oscillator

Vibration harmonic oscillator

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

156

1000

330

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

Exponential

Logarithmic

Linear

Hyperbolic

10. Sound waves in air always

Transverse

Electromagnetic

Stationary

Longitudinal

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

Polarization

Diffraction

Refraction

Reflection

12. 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

13. The distance between node and anti-node is

λ/2

λ/4

2λ

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

∞ x

∞√x

∞ x²

Independent of x

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

Simple Harmonic Motion

Circular Motion

Angular Motion

Rectilinear Motion

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

1/T seconds

F seconds

1 second

1/f seconds

17. Fidelity refers to

Reproduction of a CD from original copy

Reproduction of original sound

Reproduction of music

Reproduction of original image

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

Wave

Time period

Oscillation Time

Reverberation

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

Resonance

Doppler effect

Interference

Beat phenomenon

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

A hyperbola

A straight line

An ellipse

A circle

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

Twice that of the individual waves

Half that of the individual waves

√2 that of the individual waves

Same as that of the individual waves

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

Restoring force is small

Quality factor is small

Damping force is small

Applied periodic force is small

23. The distance between node and antinode is

λ/2

2λ

λ/4

24. Energy is not carried by

Transverse progressive waves

Longitudinal vibration

Stationary waves

Electromagnetic waves

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

Resonance

None of these

Oscillation

Damping

Page 2 of 4

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

120°

60°

90°

180°

27. An oscillating mass-spring system generates

Progressive waves

Mechanical waves

Periodic waves

None of these

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

Zero in the mean position

Constant

Maximum in the extreme position

None of these

29. 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

36 m

1/36 m

30. The velocity of sound in air depends upon

Wavelength of sound

Pressure

Density and elasticity of gas

Amplitude and frequency of sound

31. Velocity of sound in vacuum is

Zero

224 ms-1

320 ms-1

332 ms-1

32. 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

33. The velocity of sound is greatest in

Vacuum

Metal

Air

Water

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

Intensity and frequency

Intensity and velocity

Frequency and number of harmonic

Frequency and velocity

35. 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/2

T/4

T/12

36. 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

37. The Doppler effect is produced if

The source is in motion

The detector is in motion

Both the above

None of these

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

Transverse progressive

Transverse stationary

Longitudinal progressive

Longitudinal stationary

39. 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

Remains same

Increase

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

Increases or decreases depending on the material

Decreases

Remains same

Increases

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

Wavelength

Frequency

None of these

Amplitude

42. 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 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

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

Refraction

Diffraction

Polarization

Interference

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

Wave length

Period

Frequency

Phase difference

45. Waves transmit _________ from one place to another

Mass

Both

None of these

Energy

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

Crossing mean position

At rest

Displacement is maximum

Half way between them

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

No apparent change in frequency

An apparent decrease in wavelength

An apparent decrease in frequency

An apparent increase in frequency

48. Decibel is unit of

x-ray radiation capacity

Energy of radiation

Sound loudness

Intensity of light

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

Interference of waves

Beats phenomena

Doppler effect

All of these

50. 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

32/3 m

3/32 m

Page 3 of 4

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

Reduce the mass to one fourth

Quadruple the mass

Half the mass

Double the mass

52. 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

Has a definite quality

Can penetrate the wall

Has a definite capacity

53. 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

√k₁/k₂

√k₂/k₁

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

Energy and mass

Energy and linear momentum

Energy

Energy, momentum and mass

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

262Hz

256Hz

7Hz

42Hz

56. 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:

1.6 kg

9.6 kg

3.2 kg

12.6 kg

57. In stationary waves

Energy is minimum at nodes and maximum at antinodes

Alternating maximum and minimum energy producing at nodes and antinodes

Energy is maximum at nodes and minimum at antidotes

Energy is uniformly distributed

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

Increases

Decreases

Remains constant

Becomes Zero

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

100 Nm¯¹

700 Nm¯¹

300 Nm¯¹

143 Nm¯¹

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

2 λ

λ/2

3/2 λ

61. 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)

62. 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

63. Silence zone takes place due to

Beats

Constructive interference

Destructive interference

Resonance

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

1214 ms¯¹

1343 ms¯¹

1483 ms¯¹

1567 ms¯¹

65. 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

Remain unaffected

Decrease

Increase

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

2,000 to 4,000 Hz

5,000 to 11,000 Hz

4,000 to 8,000 Hz

3,000 to 6,000 Hz

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

Visible light

Ultra-violet rays

Infra-red radiation

Gamma rays

68. In stationary waves

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

Energy is uniformly distributed

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

None of these

Progressive wave

Longitudinal waves

Transverse wave

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

Mechanical waves

Carrier waves

Electromagnetic waves

Matter waves

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

1 MHz

1 GHz

100000 Hz

10 Hz

72. Doppler-effect applies to

Both sound and light waves

Neither sound nor light wave

Sound wave only

Light wave only

73. 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

(9/10)²

(11/10)²

10/9

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

Temperature of air

Moisture contents in air

The atmospheric pressure

The composition of air

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

None of these

Out of phase

In phase

Sometimes in phase

Page 4 of 4

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

66 m

16.5 m

33 m

10 m

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 not change

Time period will increase

Time period will depend on the weight of the boy.

Time period will decrease

78. 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

79. 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 maximum, α is maximum

When v is maximum, α is zero

When v is zero, α is zero

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

Independent of amplitude of motion

Amplitude of motion will be very large

None of these

Amplitude of motion will be every small

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

Increased

None of these

Increased rapidly

Decreased

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

Wave mechanics

Optics

Acoustics

Statics

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

√6 times faster

6 times faster

At correct rate

√6 times slower

84. The gases have a

None of these

Large elastic modulus

Zero elastic modulus

Smaller elastic modules

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

2 : 1

1 : 2

1 : 4

4 : 1

86. 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

87. ‘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

1.35

1.26

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

Density only

Neither pressure nor density

Pressure only

Both pressure and density

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

2π second

1 second

4π second

π second

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

Do not affect photographic plate

Have a lower frequency

Cannot be polarized

Cannot be diffracted

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

Polarization

Refraction

Reflection

Interference

92. What sort of waves exhibit the Doppler effect?

Water waves

Light waves

All of these

Sound waves

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

Increases

Becomes zero

Remains unchanged

Decreases

94. 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 gain of energy

The energy is redistributed and the distribution changes with time

There is a loss of 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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