Physics Oscillations Online Mcqs Test

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Question 1

1. The body oscillates due to a

Answer

Frictional force

Answer

None of these

Answer

Restoring force

Answer

Applied force

Question 2

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

Answer

Reduce the mass to one fourth

Answer

Quadruple the mass

Answer

Double the mass

Answer

Half the mass

Question 3

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

Answer

Circular Motion

Answer

Simple Harmonic Motion

Answer

Rectilinear Motion

Answer

Angular Motion

Question 4

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

Answer

Zero in the mean position

Answer

None of these

Answer

Maximum in the extreme position

Question 5

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

Answer

Extra ordinarily large

Question 6

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

Answer

Vp sin (90° - θ)

Answer

All of these

Answer

X₀ ω cos θ

Question 7

7. In which case does the potential energy decreases?

Answer

One the rising of an air bubble in water

Answer

On moving a body against gravitational force

Answer

On compressing a spring

Answer

On stretching s spring

Question 8

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

Answer

Remains constant

Answer

Becomes zero

Question 9

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

Answer

Oscillation

Question 10

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

Answer

Four times

Answer

Nine times

Answer

Three times

Question 11

11. The waves produced in microwave oven have a wavelength

Question 12

12. Turning of a radio set is an example of

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Electrical resonance

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Free vibration

Answer

Mechanical resonance

Answer

Musical resonance

Question 13

13. In vibratory motion

Answer

Total energy remain constant

Answer

P.E. remains constant

Answer

Total momentum remain constant

Answer

K.E. remain constant

Question 14

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

Answer

Both a and b

Answer

Mean position

Answer

Extreme position

Question 15

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

Question 16

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

Question 17

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

Answer

Becomes zero

Answer

Remains constant

Question 18

18. 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

Answer

Phase difference between acceleration and displacement

Answer

Potential energy

Answer

Difference between kinetic energy and potential energy

Question 19

19. Phase of SHM describes

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Displacement only

Answer

Direction of motion only

Answer

Both displacement and direction of motion

Answer

Neither displacement nor direction of motion

Question 20

20. The kinetic energy is maximum when mass at equilibrium

Answer

None of these

Answer

P.E.max 1.2 KX²

Answer

P.E.max 1.2 KX₀²

Answer

P.E.max 1.2 K² X

Question 21

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

Answer

The potential energy is maximum at the mean position

Answer

The acceleration is minimum at the mean position

Answer

The kinetic energy is maximum at the mean position

Answer

The force on the particle is maximum at the ends

Question 22

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

Answer

2π second

Answer

4π second

Question 23

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

Answer

Restoring force is small

Answer

Applied periodic force is small

Answer

Damping force is small

Answer

Quality factor is small

Question 24

24. A simple harmonic motion in which the

Answer

Acceleration is directed towards the mean position

Answer

Acceleration produced is due to restoring force

Answer

Acceleration is directly proportional to displacement

Answer

All of these

Question 25

25. S.I unit of frequency is

Answer

Vibration S¯²

Question 26

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

Answer

Means position to upper extreme position

Answer

All of these

Answer

From extreme position

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From means position to back to its means position

Question 27

27. The vibrating bodies produce

Answer

Disturbance

Answer

All of these

Question 28

28. Restoring force is defined as

Question 29

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

Answer

P.E. = ½ KX₀²

Answer

P.E. = ½ KX²

Answer

None of these

Answer

P.E. = ½ K²X²

Question 30

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

Answer

V = √r² – x²

Answer

V = ω√r² – x²

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V = r² – x²

Answer

None of these

Question 31

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

Answer

Half the mass

Answer

Reduce the mass to one-fourth

Answer

Double the mass

Answer

Quadruple the mass

Question 32

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

Answer

A straight line

Answer

An ellipse

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A hyperbola

Question 33

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

Answer

Becomes Double

Answer

Remains same

Answer

Becomes one half

Answer

Become on fourth

Question 34

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

Answer

The mass of the pendulum is decreased

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The length of the pendulum is decreased

Answer

The mass of the pendulum is increased

Answer

The length of the pendulum is increased

Question 35

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

Answer

Extreme position

Answer

None of these

Answer

Between mean and extreme position

Answer

Mean position

Question 36

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

Answer

Independent of x

Question 37

37. Identify the exact statement among the following:

Answer

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

Answer

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

Answer

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°.

Answer

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

Question 38

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

Answer

Free vibrations

Answer

None of these

Answer

Powerful vibration

Answer

Forced vibration

Question 39

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

Answer

Both a and b

Answer

Extreme Position

Answer

Mean Position

Question 40

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

Answer

None of these

Answer

Drag force of air

Answer

Tension is string

Question 41

41. 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

Question 42

42. 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

Question 43

43. The waveform of simple harmonic motion will be

Answer

None of these

Answer

Saw tooth waveform

Answer

Square wave

Question 44

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

Answer

The mass of the pendulum is increased

Answer

The length of the pendulum is decreased

Answer

The mass of the pendulum is decreased

Answer

The length of the pendulum is increased

Question 45

45. A simple pendulum is defined as

Answer

All of these

Answer

Friction less support

Answer

Small heavy mass

Answer

Light inextensible string

Question 46

46. Oscillatory motion is a type of motion which is

Answer

Vibratory motion

Answer

To and fro

Answer

All of these

Answer

Periodic motions

Question 47

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

Answer

k₁ k₂/( k₁ + k₂)

Answer

(k₁ + k₂)/2

Answer

k₁ + k₂

Answer

√k₁ k₂

Question 48

48. The damping depends upon

Answer

None of these

Question 49

49. Simple harmonic motion is mathematically represented as

Answer

F α – x

Answer

V α – x

Answer

A α – x

Question 50

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

Answer

Maximum frequency

Answer

Natural frequency

Answer

None of these

Answer

Minimum frequency

Question 51

51. Natural frequency of simple pendulum depends upon

Answer

Its length

Answer

Square of its length

Answer

Square root of its length

Question 52

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

Answer

Crossing mean position

Answer

Displacement is maximum

Answer

Half way between them

Question 53

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

Answer

Remains constant

Answer

Becomes zero

Question 54

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

Answer

Wavelength of the various bodies

Answer

Amplitudes of the various bodies

Answer

Wavelength of the various bodies

Answer

None of these

Question 55

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

Question 56

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

Question 57

57. 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

Answer

Remain unaffected

Answer

Become infinite

Question 58

58. 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

Answer

Periodic motion

Answer

Wave motion

Answer

Rotatory motion

Answer

Rectilinear motion

Question 59

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

Question 60

60. Frequency is the term used for

Answer

Number of vibrations per minute

Answer

Time to take one Vibration

Answer

Number of vibration for second

Answer

None of these

Question 61

61. The damped oscillations are produced due to

Answer

All of these

Answer

System friction

Answer

Air resistance

Answer

Frictional support of the system

Question 62

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

Answer

The kinetic energy is maximum at the mean position

Answer

The potential energy is maximum at the mean position

Answer

The acceleration is minimum at the mean position

Answer

The force on the particle is maximum at the ends

Question 63

63. In vibratory motion which parameter remains constant?

Answer

Total Energy

Answer

P.E. Energy

Answer

K.E. Energy

Answer

Angular Momentum

Question 64

64. The restoring force applied on the pendulum

Answer

-mg cos θ

Answer

-mg sin θ

Answer 180

None of these

Answer 181

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

Answer 182

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

Answer 183

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

Answer 184

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

Answer 185

Force constant

Answer 186

F and X has no relation

Answer 187

None of these

Answer 188

F and X are direct proportional

Answer 189

F and X are inverse proportional

Answer 190

X = X₀ sin ωt

Answer 191

X = X₀ cos (ωt + φ)

Answer 192

X = X₀ cos ωt

Answer 193

None of these

Answer 194

Maximum as well minimum

Answer 195

Minimum only

Answer 196

Maximum only

Answer 197

None of these

Answer 198

Time period will not change

Answer 199

Time period will depend on the weight of the boy.

Answer 200

Time period will decrease

Answer 201

Time period will increase

Answer 202

Water molecules

Answer 203

All of these

Answer 204

Fat molecules

Answer 205

First A then B

Answer 206

Remain the same

Answer 207

Angular frequency, Acceleration, force

Answer 208

Acceleration, force, total energy

Answer 209

Total energy, amplitude, angular frequency

Answer 210

Amplitude, angular frequency, acceleration

Answer 211

All of these

Answer 212

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

Answer 213

The velocity of the vibrating particle is ahead in phase of the displacement by and angle π.

Answer 214

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

Answer 215

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

Answer 216

Wave moving through a string fixed at both ends.

Answer 217

Ball bouncing between two rigid vertical walls

Answer 218

Earth spinning about its own axis

Answer 219

Particle moving in a circle with uniform speed.

Answer 220

Time period

Answer 221

Wavelength

Answer 222

Doppler’s effect

Answer 223

Kinetic energy is minimum, potential energy is maximum

Answer 224

Kinetic energy is maximum, potential energy is minimum

Answer 225

Both kinetic and potential energies are minimum

Answer 226

Both kinetic and potential energies are maximum

Answer 227

Driving source

Answer 228

Starting source

Answer 229

None of these

Answer 230

Applied force

Answer 231

Square of amplitude

Answer 232

2 x amplitude

Answer 233

4 x amplitude

Answer 234

Simple harmonic vibration

Answer 235

Natural vibration

Answer 236

Driven harmonic vibration

Answer 237

Free vibration

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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