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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 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:

36 m

1/36 m

6 m

1/6 m

2. 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.

Can penetrate the wall

Has a definite capacity

Has a definite pitch

Has a definite quality

3. In vibratory motion which parameter remains constant?

P.E. Energy

Angular Momentum

K.E. Energy

Total Energy

4. Fidelity refers to

Reproduction of original image

Reproduction of a CD from original copy

Reproduction of original sound

Reproduction of music

5. The velocity of sound is greatest in

Air

Metal

Vacuum

Water

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

Gamma rays

Visible light

Infra-red radiation

Ultra-violet rays

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

Sonic speed

Extra supersonic speed

Supersonic speed

None of these

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

Wave mechanics

Optics

Statics

Acoustics

9. 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

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

Increased rapidly

None of these

Increased

Decreased

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

λ/2

3/2 λ

2 λ

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

None of these

Out of phase

In phase

Sometimes in phase

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

Same as that of the individual waves

Half that of the individual waves

√2 that of the individual waves

Twice that of the individual waves

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

Intensity and frequency

Frequency and number of harmonic

Frequency and velocity

Intensity and velocity

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

Cannot be diffracted

Have a lower frequency

Cannot be polarized

Do not affect photographic plate

16. Energy is not carried by

Electromagnetic waves

Transverse progressive waves

Stationary waves

Longitudinal vibration

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

Refraction

Interference

Polarization

Diffraction

18. In simple harmonic motion,

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

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

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

Mechanical waves

Electromagnetic waves

Carrier waves

Matter waves

20. 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

21. Velocity of sound in vacuum is

224 ms-1

332 ms-1

Zero

320 ms-1

22. 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

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

Increases

Remains unchanged

Decreases

Becomes zero

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

Increases

Remains same

Increases or decreases depending on the material

Decreases

25. In stationary waves

Energy is minimum at nodes and maximum at antinodes

Energy is maximum at nodes and minimum at antidotes

Alternating maximum and minimum energy producing at nodes and antinodes

Energy is uniformly distributed

Page 2 of 4

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

The energy is redistributed and the distribution changes with time

The energy is redistributed and the distribution remains constant with time

There is a loss of energy

There is a gain of energy

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

100000 Hz

1 MHz

1 GHz

10 Hz

28. Silence zone takes place due to

Constructive interference

Resonance

Beats

Destructive interference

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

An apparent decrease in frequency

An apparent decrease in wavelength

An apparent increase in frequency

No apparent change in frequency

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

306 m/s

340 m/s

360 m/s

331 m/s

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

Doppler effect

Interference

Beat phenomenon

Resonance

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

Period

Wave length

Frequency

Phase difference

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

1343 ms¯¹

1214 ms¯¹

1567 ms¯¹

1483 ms¯¹

34. The distance between node and antinode is

2λ

λ/4

λ/2

35. 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

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

60°

90°

180°

120°

37. 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

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

Crossing mean position

Displacement is maximum

At rest

Half way between them

39. 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

700 Nm¯¹

143 Nm¯¹

40. 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

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

4 s

3 s

1 s

2 s

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

Refraction

Polarization

Diffraction

Reflection

43. 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/2

T/12

44. 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

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

1.35

1.40

1.56

1.26

46. 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

47. The velocity of sound in air depends upon

Amplitude and frequency of sound

Wavelength of sound

Pressure

Density and elasticity of gas

48. Decibel is unit of

Sound loudness

Intensity of light

Energy of radiation

x-ray radiation capacity

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

Independent of x

∞ x²

∞√x

∞ x

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

Becomes Zero

Decreases

Remains constant

Increases

Page 3 of 4

51. Sound waves in air always

Longitudinal

Transverse

Electromagnetic

Stationary

52. A system under going force vibrations is known as

Driven harmonic oscillator

Vibration harmonic oscillator

Frequency harmonic oscillator

None

53. 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

Increase

Decrease

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

2,000 to 4,000 Hz

3,000 to 6,000 Hz

4,000 to 8,000 Hz

5,000 to 11,000 Hz

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

2λ

λ/2

λ/4

56. 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

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

An ellipse

A hyperbola

A straight line

A circle

58. 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

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

When v is maximum, α is zero

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

Resonance

Damping

Oscillation

None of these

60. 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

61. For production of beats the two sources must have

Different frequencies and same amplitude

Different frequencies, same amplitude and same phase

Different frequencies and same phase

Different frequencies

62. 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

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

Rectilinear Motion

Angular Motion

Simple Harmonic Motion

Circular Motion

64. The distance between node and anti-node is

λ/2

λ/4

2λ

65. 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

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

None of these

Frequency

Amplitude

Wavelength

67. Beats are the results of

Diffraction of sound waves

Constrictive and destructive interference

Polarization

Destructive interference

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

10 m

33 m

16.5 m

66 m

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

Longitudinal stationary

Transverse progressive

Transverse stationary

Longitudinal progressive

70. The gases have a

Smaller elastic modules

Zero elastic modulus

None of these

Large elastic modulus

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

256Hz

262Hz

7Hz

42Hz

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

Wave

Reverberation

Time period

Oscillation Time

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

Double the mass

Reduce the mass to one fourth

Half the mass

Quadruple the mass

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

Zero in the mean position

Constant

Maximum in the extreme position

None of these

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

Reflection

Polarization

Refraction

Interference

Page 4 of 4

76. 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

3/32 m

32/3 m

2/3 m

3/2 m

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

1/f seconds

F seconds

1 second

1/T seconds

78. Waves transmit _________ from one place to another

Mass

None of these

Energy

Both

79. An oscillating mass-spring system generates

Periodic waves

Mechanical waves

None of these

Progressive waves

80. 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)/2

k₁ k₂/( k₁+k₂)

81. 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

3.2 kg

12.6 kg

9.6 kg

82. Doppler-effect applies to

Sound wave only

Both sound and light waves

Neither sound nor light wave

Light wave only

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

Independent of amplitude of motion

Amplitude of motion will be very large

Amplitude of motion will be every small

None of these

84. 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

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

Both pressure and density

Pressure only

Neither pressure nor density

Density only

86. Sound waves do not travel in vacuum because

They are transverse waves

They require material medium for propagation

They do not have enough energy

They are stationary waves

87. 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

Increase

Become infinite

Remain unaffected

Decrease

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

1 : 4

1 : 2

2 : 1

4 : 1

89. 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

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

156

1000

330

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

Logarithmic

Hyperbolic

Exponential

Linear

92. What sort of waves exhibit the Doppler effect?

Sound waves

Water waves

All of these

Light waves

93. 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

94. The Doppler effect is produced if

Both the above

The source is in motion

None of these

The detector is in motion

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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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