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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 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

1.6 kg

3.2 kg

9.6 kg

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

None of these

Damping

Resonance

Oscillation

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

Carrier waves

Electromagnetic waves

Matter waves

Mechanical waves

4. Fidelity refers to

Reproduction of original sound

Reproduction of original image

Reproduction of a CD from original copy

Reproduction of music

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

Maximum in the extreme position

Zero in the mean position

Constant

None of these

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

Interference of waves

All of these

Doppler effect

Beats phenomena

7. 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/2

T/8

T/12

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

Angular Motion

Circular Motion

Rectilinear Motion

Simple Harmonic Motion

9. What sort of waves exhibit the Doppler effect?

Water waves

Sound waves

All of these

Light waves

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

Supersonic speed

None of these

Extra supersonic speed

Sonic speed

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

1/f seconds

1/T seconds

F seconds

1 second

12. 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

k₂/k₁

k₁/k₂

√k₁/k₂

13. 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

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

Remains same

Become zero

Decrease

Increase

15. The distance between node and antinode is

λ/4

λ/2

2λ

16. 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

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

Increases

Decreases

Becomes Zero

Remains constant

18. 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

9 (β – α)

5 β – 4 α

5α – 4β

β – α

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

42Hz

262Hz

7Hz

256Hz

20. 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

3 s

1 s

4 s

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

No apparent change in frequency

An apparent increase in frequency

An apparent decrease in frequency

An apparent decrease in wavelength

22. 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

23. 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 decrease

Time period will depend on the weight of the boy.

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

10/9

11/10

(9/10)²

(11/10)²

25. 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

Page 2 of 4

26. Waves transmit _________ from one place to another

None of these

Both

Energy

Mass

27. The velocity of sound is greatest in

Vacuum

Air

Metal

Water

28. Velocity of sound in vacuum is

320 ms-1

332 ms-1

Zero

224 ms-1

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

Reflection

Diffraction

Polarization

Refraction

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

Frequency

Phase difference

Wave length

Period

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

4 : 1

1 : 4

1 : 2

2 : 1

32. In stationary waves

Energy is minimum at nodes and maximum at antinodes

Energy is minimum at nodes and maximum at antidotes

Alternating maximum and minimum energy producing at nodes and antinodes

Energy is uniformly distributed

33. 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 capacity

Has a definite quality

Can penetrate the wall

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

λ/4

2λ

λ/2

35. Beats are the results of

Constrictive and destructive interference

Destructive interference

Polarization

Diffraction of sound waves

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

Frequency and velocity

Intensity and velocity

Intensity and frequency

Frequency and number of harmonic

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

Have a lower frequency

Cannot be polarized

Cannot be diffracted

Do not affect photographic plate

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

Hyperbolic

Logarithmic

Exponential

Linear

39. The speed of sound in a medium depends on

The inertia property but not on the elastic property

The elastic property as well as the inertia property

Neither the elastic property nor the inertia property

The elastic property but not on the inertia property

40. 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

The energy is redistributed and the distribution remains constant with time

There is a loss of energy

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

λ/2

2 λ

3/2 λ

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

Longitudinal waves

Progressive wave

Transverse wave

None of these

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

1214 ms¯¹

1343 ms¯¹

1483 ms¯¹

1567 ms¯¹

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

Visible light

Infra-red radiation

Gamma rays

Ultra-violet rays

45. 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 faster

√6 times slower

46. 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 maximum

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

When v is zero, α is zero

When v is maximum, α is zero

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

Independent of x

∞ x

∞ x²

∞√x

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

33 m

16.5 m

66 m

10 m

49. A system under going force vibrations is known as

None

Frequency harmonic oscillator

Vibration harmonic oscillator

Driven harmonic oscillator

50. In vibratory motion which parameter remains constant?

Angular Momentum

K.E. Energy

P.E. Energy

Total Energy

Page 3 of 4

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

Longitudinal stationary

Transverse progressive

Transverse stationary

Longitudinal progressive

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

2π second

π second

1 second

4π second

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

1.35

1.56

1.26

1.40

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

Decreases

Increases

Becomes zero

Remains unchanged

55. The distance between node and anti-node is

λ/4

λ/2

2λ

56. 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

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

Amplitude

Frequency

Wavelength

None of these

58. An oscillating mass-spring system generates

Periodic waves

Mechanical waves

Progressive waves

None of these

59. For production of beats the two sources must have

Different frequencies and same amplitude

Different frequencies

Different frequencies, same amplitude and same phase

Different frequencies and same phase

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

Both pressure and density

Density only

Neither pressure nor density

Pressure only

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

Damping force is small

Restoring force is small

Applied periodic force is small

Quality factor is small

62. In stationary waves

Energy is uniformly distributed

Alternating maximum and minimum energy producing at nodes and antinodes

Energy is maximum at nodes and minimum at antidotes

Energy is minimum at nodes and maximum at antinodes

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

Quadruple the mass

Half the mass

Double the mass

Reduce the mass to one fourth

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

A straight line

A circle

An ellipse

A hyperbola

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

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

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

120°

180°

90°

60°

67. The gases have a

Large elastic modulus

None of these

Zero elastic modulus

Smaller elastic modules

68. Sound waves in air always

Electromagnetic

Transverse

Longitudinal

Stationary

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

Statics

Acoustics

Optics

Wave mechanics

70. Doppler-effect applies to

Sound wave only

Neither sound nor light wave

Both sound and light waves

Light wave only

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

Half that of the individual waves

Same as that of the individual waves

Twice that of the individual waves

√2 that of the individual waves

72. 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

2 sec

¼ sec

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

5,000 to 11,000 Hz

2,000 to 4,000 Hz

4,000 to 8,000 Hz

3,000 to 6,000 Hz

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

1 GHz

10 Hz

100000 Hz

1 MHz

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

Displacement is maximum

At rest

Half way between them

Crossing mean position

Page 4 of 4

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

Temperature of air

The composition of air

The atmospheric pressure

Moisture contents in air

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

None of these

Decreased

Increased

Increased rapidly

78. Decibel is unit of

x-ray radiation capacity

Energy of radiation

Sound loudness

Intensity of light

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

360 m/s

331 m/s

340 m/s

306 m/s

80. 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

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

Refraction

Interference

Diffraction

Polarization

82. Silence zone takes place due to

Resonance

Destructive interference

Constructive interference

Beats

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

None of these

Amplitude of motion will be every small

Independent of amplitude of motion

Amplitude of motion will be very large

84. 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

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

Interference

Refraction

Polarization

Reflection

86. 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

6 m

1/36 m

36 m

87. The Doppler effect is produced if

The source is in motion

Both the above

The detector is in motion

None of these

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

156

1000

330

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

In phase

Out of phase

Sometimes in phase

None of these

90. The velocity of sound in air depends upon

Density and elasticity of gas

Pressure

Amplitude and frequency of sound

Wavelength of sound

91. Energy is not carried by

Stationary waves

Electromagnetic waves

Transverse progressive waves

Longitudinal vibration

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

Beat phenomenon

Doppler effect

Interference

Resonance

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

Time period

Reverberation

Wave

Oscillation Time

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

Decreases

Increases

Increases or decreases depending on the material

Remains same

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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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