Physics Oscillations Online Mcqs Test

Maan AliLast Updated: October 13, 2025

Important Oscillations Question and Answer

Total Questions:	87
Time Allowed:	40 Minutes
Total Marks:	87
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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Physics Oscillations Practice Test Online With Explanation

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Page 1 of 4

Physics

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

None

Oscillation

Resonance

Damping

2. The frequency of these free oscillations is known as it s

None of these

Natural frequency

Minimum frequency

Maximum frequency

3. In which of the following lists are all three quantities constant when a particle moves in undamped simple harmonic motion?

Total energy, amplitude, angular frequency

Angular frequency, Acceleration, force

Acceleration, force, total energy

Amplitude, angular frequency, acceleration

4. The waveform of simple harmonic motion will be

Sine wave

None of these

Saw tooth waveform

Square wave

5. Phenomenon of resonance is very often employed to determine the

Wavelength of the various bodies

None of these

Wavelength of the various bodies

Amplitudes of the various bodies

6. Frequency is the term used for

Time to take one Vibration

Number of vibration for second

Number of vibrations per minute

None of these

7. When a body movies in a circle, its projection performs what type of motion?

Simple Harmonic Motion

Angular Motion

Rectilinear Motion

Circular Motion

8. Simple harmonic motion is mathematically represented as

F α – x

A α x

A α – x

V α – x

9. The energy of the oscillation comes from the

Driving source

Starting source

Applied force

None of these

10. The time period of a simple pendulum is 2 seconds. If its length is increased by 4 times, then its period becomes

12 s

8 s

16 s

4 s

11. If the period of oscillation of mass (M) suspended from a spring is 2s, then the period of mass 4M will be

4 s

1 s

3 s

2 s

12. Which one of the following is a simple harmonic motion?

Wave moving through a string fixed at both ends.

Ball bouncing between two rigid vertical walls

Earth spinning about its own axis

Particle moving in a circle with uniform speed.

13. When the displacement is half of the amplitude, the ratio of potential energy to the total energy is

1/8

14. 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 increase

Time period will depend on the weight of the boy.

Time period will not change

15. The product of frequency and time period is equal to

16. A vertical mass-spring system executes simple harmonic oscillations with a period of 2s A quantity of this system which exhibits simple harmonic variation with a period of 1s is

Potential energy

Difference between kinetic energy and potential energy

Phase difference between acceleration and displacement

Velocity

17. Two springs of spring constants 1500 N/m and 3000 N/m respectively are stretched with the same force. They will have potential energy in the ratio

1 : 4

2 : 1

1 : 2

4 : 1

18. In a simple harmonic motion (SHM), which of the following does not hold?

The potential energy is maximum at the mean position

The force on the particle is maximum at the ends

The acceleration is minimum at the mean position

The kinetic energy is maximum at the mean position

19. In case of a simple pendulum the cause of damping is

None of these

Drag force of air

Gravity

Tension is string

20. In case of a vibrating Pendulum, the potential energy is maximum at

Mean Position

None

Extreme Position

Both a and b

21. In vibratory motion which parameter remains constant?

P.E. Energy

Angular Momentum

K.E. Energy

Total Energy

22. The potential energy of a spring executing SHM is given by the

Kx²

½ Kx

½ Kx²

23. The kinetic energy is maximum when mass at equilibrium

P.E.max 1.2 KX²

None of these

P.E.max 1.2 KX₀²

P.E.max 1.2 K² X

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

Quadruple the mass

Double the mass

Half the mass

Reduce the mass to one fourth

25. S.I unit of frequency is

ms¯¹

Hertz

Vibration S¯²

Radian

Page 2 of 4

26. The damping depends upon

None of these

Both

Sharpness

Amplitude

27. For a simple pendulum the restoring force is caused by

Spring

Hand

Gravity

All of these

28. 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

Remain unaffected

Decrease

Become infinite

Increase

29. Specific response of a system which is able to oscillate with a certain period, to an external force acting with the same period is called

Time period

Resonance

Wavelength

Doppler’s effect

30. To make the frequency double of an oscillator, we have to

Quadruple the mass

Double the mass

Half the mass

Reduce the mass to one-fourth

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

Decreases

Remains constant

Becomes zero

Increases

32. The work done is stretching spring appears as elastic potential energy of the spring is

P.E. = ½ KX²

P.E. = ½ KX₀²

None of these

P.E. = ½ K²X²

33. If a simple pendulum is shifted from Multan to Mount Everest, then its time period

Increases

Becomes zero

Decreases

Remains constant

34. A simple pendulum is defined as

Friction less support

All of these

Small heavy mass

Light inextensible string

35. Natural frequency of simple pendulum depends upon

Square root of its length

Its mass

Square of its length

Its length

36. In which case does the potential energy decreases?

On stretching s spring

One the rising of an air bubble in water

On compressing a spring

On moving a body against gravitational force

37. The frequency of second pendulum is

1 hertz

2 hertz

None of these

0.5 hertz

38. Hook’s law is defined as

F and X has no relation

None of these

F and X are inverse proportional

F and X are direct proportional

39. The time period so a system executing simple harmonic motion depends upon

Amplitude

Mass

Force constant

B and C

40. In a resonance striation, the driving force may be

Weak

Extra ordinarily large

Strong

Feeble

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

Remains constant

Decreases

Becomes zero

Increases

42. The effective component of Vp or the velocity of the particle is given by

X₀ ω cos θ

All of these

Vp sin (90° - θ)

Vp cos θ

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

Become on fourth

Becomes Double

Becomes one half

Remains same

44. A driven harmonic oscillator is the device in which, a physical system undergoes

None of these

Powerful vibration

Free vibrations

Forced vibration

45. If the metal bob in a simple pendulum is replaced by a wooden bob, then its time period will

Increases

Remain the same

Decreases

First A then B

46. At the frequency of 2450 MHz, the waves are absorbed due to resonance by

Fat molecules

Both

All of these

Water molecules

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

1 second

2π second

π second

4π second

48. The type of motion in which an oscillating disturbance is transmitted from one position to the next without the actual rectilinear translation of the particles of the medium is called

Wave motion

Periodic motion

Rectilinear motion

Rotatory motion

49. The distance covered by a body in one complete vibration is 20cm. What is the amplitude of body?

7.5 cm

5 cm

10 cm

15 cm

50. Identify the exact statement among the following:

The greater the mass of pendulum bob, the shorter is its frequency of oscillation

The fractional change in the time period of a pendulum on changing the temperature is independent of the length of the pendulum.

As the length of a simple pendulum is increased, the maximum velocity of its bob during its oscillation will also increase

A simple pendulum with a bob of mass M swings with an angular amplitude of 40°. When its angular amplitude is 20°, the tension in the string is less than Mg cos 20°.

Page 3 of 4

51. One vibration means, the motion of mass from its

From extreme position

From means position to back to its means position

Means position to upper extreme position

All of these

52. Two springs of spring constants k₁ and k₂ are joined in series. The effective spring constant of the combination is given by

√k₁ k₂

(k₁ + k₂)/2

k₁ + k₂

k₁ k₂/( k₁ + k₂)

53. Turning of a radio set is an example of

Musical resonance

Free vibration

Electrical resonance

Mechanical resonance

54. In a simple harmonic motion (SHM), which of the following does not hold?

The force on the particle is maximum at the ends

The potential energy is maximum at the mean position

The acceleration is minimum at the mean position

The kinetic energy is maximum at the mean position

55. In energy conservation, when spring is stretched slowly so that acceleration is

Maximum

Zero

None of these

Minimum

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

2λ

λ/2

3/2 λ

57. In simple harmonic motion

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

58. 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

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

Crossing mean position

Displacement is maximum

At rest

Half way between them

60. The body oscillates due to a

None of these

Frictional force

Applied force

Restoring force

61. A simple harmonic motion in which the

Acceleration is directly proportional to displacement

Acceleration produced is due to restoring force

All of these

Acceleration is directed towards the mean position

62. In vibratory motion

Total energy remain constant

K.E. remain constant

Total momentum remain constant

P.E. remains constant

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

2 λ

λ/2

3/2 λ

64. The relation for the displacement in SHM is

X = X₀ cos (ωt + φ)

X = X₀ cos ωt

X = X₀ sin ωt

None of these

65. The damped oscillations are produced due to

Frictional support of the system

All of these

System friction

Air resistance

66. The velocity of the mass attached to a spring is maximum at

Extreme position

Both a and b

None

Mean position

67. Simple harmonic motion is defined as the motion of a particle such that

Its acceleration is proportional to, and in the opposite direction to, the displacement

Its acceleration is always ω²x₀ and its directed at right angles to its motion

Its displacement x is related to its velocity b by the expression v = ωt.

Its displacement x is always given by the expression x = x₀ sin ωt.

68. Restoring force is defined as

F = kx

F = ma

F = -kx

F = ½ kx

69. The speed of a particle executing SHM along a circular path is given by the relation

V = r² – x²

V = √r² – x²

V = ω√r² – x²

None of these

70. The energy absorbed by a body is _________ at resonance.

Maximum as well minimum

Maximum only

Minimum only

Zero

71. The waves produced in microwave oven have a wavelength

11.5cm

11cm

12cm

10cm

72. If the length of the pendulum becomes four times, its time period will become

Twice

Three times

Nine times

Four times

73. In a simple harmonic oscillator, at the mean position

Both kinetic and potential energies are maximum

Kinetic energy is maximum, potential energy is minimum

Kinetic energy is minimum, potential energy is maximum

Both kinetic and potential energies are minimum

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

Restoring force is small

Applied periodic force is small

Quality factor is small

Damping force is small

75. Forced vibration are known as

Natural vibration

Driven harmonic vibration

Simple harmonic vibration

Free vibration

Page 4 of 4

76. The restoring force applied on the pendulum

Mg cos θ

-mg sin θ

-mg cos θ

Mg sin θ

77. A pendulum clock set to give correct time in Karachi is taken to Quetta. It would give correct time if

The mass of the pendulum is decreased

The length of the pendulum is increased

The length of the pendulum is decreased

The mass of the pendulum is increased

78. Oscillatory motion is a type of motion which is

Vibratory motion

Periodic motions

To and fro

All of these

79. The vibrating bodies produce

Disturbance

Waves

Sound

All of these

80. The velocity of the body changes at different points, it is maximum at

Extreme position

Mean position

None of these

Between mean and extreme position

81. Phase of SHM describes

Displacement only

Neither displacement nor direction of motion

Both displacement and direction of motion

Direction of motion only

82. A pendulum clock set to give correct time in Karachi is taken to Quetta. It would give correct time if

The mass of the pendulum is increased

The length of the pendulum is increased

The mass of the pendulum is decreased

The length of the pendulum is decreased

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

2 λ

λ/4

λ/2

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

Constant

Zero in the mean position

None of these

Maximum in the extreme position

85. Total distance traveled by bob of simple pendulum in one vibration is equal to

4 x amplitude

Square of amplitude

2 x amplitude

Amplitude

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

∞ x²

∞ x

∞ √x

Independent of x

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

A circle

A hyperbola

An ellipse

A straight line

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Maan AliLast Updated: October 13, 2025

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November 8, 2016 at 12:26 am

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Important Oscillations Question and Answer

Physics Oscillations Practice Test Online With Explanation

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