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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. 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

2. The Doppler effect is produced if

Both the above

None of these

The source is in motion

The detector is in motion

3. 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

4. Energy is not carried by

Longitudinal vibration

Electromagnetic waves

Stationary waves

Transverse progressive waves

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

Half way between them

Crossing mean position

Displacement is maximum

At rest

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

262Hz

42Hz

7Hz

256Hz

7. Fidelity refers to

Reproduction of music

Reproduction of original image

Reproduction of original sound

Reproduction of a CD from original copy

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

None of these

Damping

Oscillation

Resonance

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

Statics

Acoustics

Wave mechanics

Optics

10. A system under going force vibrations is known as

None

Vibration harmonic oscillator

Frequency harmonic oscillator

Driven harmonic oscillator

11. Beats are the results of

Diffraction of sound waves

Destructive interference

Polarization

Constrictive and destructive interference

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

Energy and linear momentum

Energy and mass

Energy

Energy, momentum and mass

13. For production of beats the two sources must have

Different frequencies, same amplitude and same phase

Different frequencies and same amplitude

Different frequencies

Different frequencies and same phase

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

Longitudinal progressive

Transverse stationary

Longitudinal stationary

Transverse progressive

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

Do not affect photographic plate

Cannot be polarized

Have a lower frequency

Cannot be diffracted

16. 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

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

Linear

Hyperbolic

Logarithmic

Exponential

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

Remains same

Becomes one half

Becomes double

Become one fourth

19. The gases have a

None of these

Large elastic modulus

Smaller elastic modules

Zero elastic modulus

20. In vibratory motion which parameter remains constant?

Total Energy

P.E. Energy

Angular Momentum

K.E. Energy

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

None of these

Supersonic speed

Extra supersonic speed

Sonic speed

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

Zero in the mean position

None of these

Constant

Maximum in the extreme position

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

A circle

A hyperbola

A straight line

An ellipse

24. The speed of sound in a medium depends on

Neither the elastic property nor the inertia property

The inertia property but not on the elastic property

The elastic property but not on the inertia property

The elastic property as well as the inertia property

25. Sound waves in air always

Transverse

Longitudinal

Stationary

Electromagnetic

Page 2 of 4

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

1/T seconds

1/f seconds

F seconds

1 second

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

1 : 4

2 : 1

1 : 2

4 : 1

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

Circular Motion

Angular Motion

Simple Harmonic Motion

Rectilinear Motion

29. 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

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

Decreased

Increased

Increased rapidly

None of these

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

Infra-red radiation

Gamma rays

Visible light

Ultra-violet rays

32. 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 depend on the weight of the boy.

Time period will decrease

Time period will increase

33. 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

34. 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 zero, α is zero

When v is maximum, α is zero

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

Becomes Zero

Increases

Decreases

Remains constant

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

Diffraction

Polarization

Refraction

Interference

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

Moisture contents in air

Temperature of air

The composition of air

The atmospheric pressure

38. 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

√k₂/k₁

√k₁/k₂

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

Out of phase

None of these

Sometimes in phase

In phase

40. Sound waves do not travel in vacuum because

They require material medium for propagation

They are stationary waves

They do not have enough energy

They are transverse waves

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

Remains unchanged

Becomes zero

Decreases

Increases

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

Oscillation Time

Time period

Wave

Reverberation

43. 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

3/32 m

32/3 m

2/3 m

44. 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

45. In stationary waves

Energy is minimum at nodes and maximum at antinodes

Energy is maximum at nodes and minimum at antidotes

Energy is uniformly distributed

Alternating maximum and minimum energy producing at nodes and antinodes

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

Pressure only

Density only

Neither pressure nor density

Both pressure and density

47. An oscillating mass-spring system generates

Periodic waves

Progressive waves

Mechanical waves

None of these

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

Reflection

Refraction

Polarization

Diffraction

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

Wavelength

None of these

Amplitude

Frequency

50. In stationary waves

Energy is minimum at nodes and maximum 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

Page 3 of 4

51. 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

9 (β – α)

β – α

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

Interference

Polarization

Refraction

Reflection

53. The distance between node and antinode is

λ/4

2λ

λ/2

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

306 m/s

360 m/s

331 m/s

340 m/s

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

6 times faster

√6 times slower

At correct rate

√6 times faster

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

λ/4

λ/2

2λ

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

Decreases

Increases or decreases depending on the material

Increases

Remains same

58. What sort of waves exhibit the Doppler effect?

Light waves

Sound waves

Water waves

All of these

59. Decibel is unit of

x-ray radiation capacity

Energy of radiation

Sound loudness

Intensity of light

60. 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

61. The velocity of sound is greatest in

Vacuum

Metal

Water

Air

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

4 sec

¼ sec

2 sec

½ sec

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

3/2 λ

2 λ

λ/2

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

Mechanical waves

Carrier waves

Matter waves

Electromagnetic waves

65. In simple harmonic motion,

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

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

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

Same as that of the individual waves

Twice that of the individual waves

√2 that of the individual waves

Half that of the individual waves

67. 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

68. 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

69. 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

3.2 kg

9.6 kg

1.6 kg

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

Progressive wave

Transverse wave

Longitudinal waves

None of these

71. 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

100 Nm¯¹

143 Nm¯¹

700 Nm¯¹

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

33 m

66 m

10 m

16.5 m

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

None of these

Independent of amplitude of motion

Amplitude of motion will be very large

Amplitude of motion will be every small

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

Frequency and number of harmonic

Intensity and frequency

Intensity and velocity

Frequency and velocity

75. ‘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

Page 4 of 4

76. The distance between node and anti-node is

2λ

λ/4

λ/2

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

10 Hz

1 GHz

100000 Hz

1 MHz

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

There is a gain of energy

The energy is redistributed and the distribution remains constant with time

There is a loss of energy

The energy is redistributed and the distribution changes with time

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

1483 ms¯¹

1214 ms¯¹

1567 ms¯¹

1343 ms¯¹

80. 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

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

330

156

1000

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

180°

90°

60°

120°

83. Silence zone takes place due to

Beats

Constructive interference

Destructive interference

Resonance

84. Waves transmit _________ from one place to another

None of these

Mass

Energy

Both

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

Beat phenomenon

Doppler effect

Interference

Resonance

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

10/9

(11/10)²

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

∞ x

∞√x

∞ x²

Independent of x

88. The velocity of sound in air depends upon

Density and elasticity of gas

Wavelength of sound

Amplitude and frequency of sound

Pressure

89. 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/2

T/8

T/4

T/12

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

Period

Frequency

Wave length

Phase difference

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

Reduce the mass to one fourth

Quadruple the mass

Double the mass

Half the mass

92. Doppler-effect applies to

Light wave only

Both sound and light waves

Neither sound nor light wave

Sound wave only

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

3,000 to 6,000 Hz

5,000 to 11,000 Hz

4,000 to 8,000 Hz

2,000 to 4,000 Hz

94. Velocity of sound in vacuum is

332 ms-1

Zero

320 ms-1

224 ms-1

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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

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