Physics Oscillations Online Mcqs Test

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Question 1

1. S.I unit of frequency is

Answer

Vibration S¯²

Question 2

2. Frequency is the term used for

Answer

Time to take one Vibration

Answer

Number of vibrations per minute

Answer

None of these

Answer

Number of vibration for second

Question 3

3. 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

Rectilinear motion

Answer

Rotatory motion

Answer

Wave motion

Answer

Periodic motion

Question 4

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

Answer

The length of the pendulum is increased

Answer

The mass of the pendulum is decreased

Answer

The mass of the pendulum is increased

Answer

The length of the pendulum is decreased

Question 5

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

Answer

Natural frequency

Answer

Maximum frequency

Answer

None of these

Answer

Minimum frequency

Question 6

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

Answer

The length of the pendulum is increased

Answer

The mass of the pendulum is increased

Answer

The mass of the pendulum is decreased

Answer

The length of the pendulum is decreased

Question 7

7. The damped oscillations are produced due to

Answer

System friction

Answer

All of these

Answer

Frictional support of the system

Answer

Air resistance

Question 8

8. Phase of SHM describes

Answer

Neither displacement nor direction of motion

Answer

Direction of motion only

Answer

Displacement only

Answer

Both displacement and direction of motion

Question 9

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

Answer

Become on fourth

Answer

Becomes Double

Answer

Becomes one half

Answer

Remains same

Question 10

10. 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 11

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

Answer

Extreme Position

Answer

Both a and b

Answer

Mean Position

Question 12

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

Answer

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

Answer

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

Answer

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

Answer

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

Question 13

13. In simple harmonic motion

Answer

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

Answer

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

Answer

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

Answer

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

Question 14

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

Answer

Forced vibration

Answer

Powerful vibration

Answer

Free vibrations

Answer

None of these

Question 15

15. The frequency of second pendulum is

Answer

None of these

Question 16

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

Answer

Amplitudes of the various bodies

Answer

Wavelength of the various bodies

Answer

None of these

Answer

Wavelength of the various bodies

Question 17

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

Answer

Both a and b

Answer

Mean position

Answer

Extreme position

Question 18

18. In vibratory motion

Answer

Total momentum remain constant

Answer

Total energy remain constant

Answer

P.E. remains constant

Answer

K.E. remain constant

Question 19

19. The kinetic energy is maximum when mass at equilibrium

Answer

P.E.max 1.2 KX₀²

Answer

None of these

Answer

P.E.max 1.2 KX²

Answer

P.E.max 1.2 K² X

Question 20

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

Answer

Acceleration, force, total energy

Answer

Angular frequency, Acceleration, force

Answer

Total energy, amplitude, angular frequency

Answer

Amplitude, angular frequency, acceleration

Question 21

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

Question 22

22. 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?

Answer

Time period will depend on the weight of the boy.

Answer

Time period will decrease

Answer

Time period will increase

Answer

Time period will not change

Question 23

23. The waveform of simple harmonic motion will be

Answer

Square wave

Answer

None of these

Answer

Saw tooth waveform

Question 24

24. 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 25

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

Answer

Drag force of air

Answer

Tension is string

Answer

None of these

Question 26

26. 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

Difference between kinetic energy and potential energy

Answer

Potential energy

Answer

Phase difference between acceleration and displacement

Question 27

27. 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

Become infinite

Answer

Remain unaffected

Question 28

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

Answer

Kinetic energy is minimum, potential energy is maximum

Answer

Both kinetic and potential energies are maximum

Answer

Kinetic energy is maximum, potential energy is minimum

Answer

Both kinetic and potential energies are minimum

Question 29

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

Answer

Maximum in the extreme position

Answer

Zero in the mean position

Answer

None of these

Question 30

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

Answer

P.E. = ½ KX²

Answer

P.E. = ½ K²X²

Answer

None of these

Answer

P.E. = ½ KX₀²

Question 31

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

Question 32

32. The energy of the oscillation comes from the

Answer

Applied force

Answer

None of these

Answer

Driving source

Answer

Starting source

Question 33

33. 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

Answer

Time period

Answer

Doppler’s effect

Answer

Wavelength

Question 34

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

Question 35

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

Answer

None of these

Question 36

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

Answer

An ellipse

Answer

A hyperbola

Answer

A straight line

Question 37

37. The restoring force applied on the pendulum

Answer

-mg cos θ

Answer

-mg sin θ

Question 38

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

Answer

Remains constant

Answer

Becomes zero

Question 39

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

Question 40

40. A simple pendulum is defined as

Answer

Friction less support

Answer

Small heavy mass

Answer

All of these

Answer

Light inextensible string

Question 41

41. A simple harmonic motion in which the

Answer

Acceleration produced is due to restoring force

Answer

Acceleration is directed towards the mean position

Answer

Acceleration is directly proportional to displacement

Answer

All of these

Question 42

42. Restoring force is defined as

Question 43

43. Identify the exact statement among the following:

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

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

Answer

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

Answer

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

Question 44

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

Answer

2 x amplitude

Answer

4 x amplitude

Answer

Square of amplitude

Question 45

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

Answer

Extra ordinarily large

Question 46

46. The vibrating bodies produce

Answer

Disturbance

Answer

All of these

Question 47

47. Turning of a radio set is an example of

Answer

Electrical resonance

Answer

Mechanical resonance

Answer

Musical resonance

Answer

Free vibration

Question 48

48. Hook’s law is defined as

Answer

F and X has no relation

Answer

F and X are inverse proportional

Answer

F and X are direct proportional

Answer

None of these

Question 49

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

Answer

All of these

Answer

From extreme position

Answer

From means position to back to its means position

Answer

Means position to upper extreme position

Question 50

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

Answer

All of these

Answer

X₀ ω cos θ

Answer

Vp sin (90° - θ)

Question 51

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

Answer

Becomes zero

Answer

Remains constant

Question 52

52. 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

Quality factor is small

Answer

Damping force is small

Question 53

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

Answer

Simple Harmonic Motion

Answer

Rectilinear Motion

Answer

Angular Motion

Answer

Circular Motion

Question 54

54. The damping depends upon

Answer

None of these

Question 55

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

Answer

Remain the same

Answer

First A then B

Question 56

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

Answer

All of these

Question 57

57. 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

Answer

k₁ + k₂

Answer

k₁ k₂/( k₁ + k₂)

Answer

(k₁ + k₂)/2

Question 58

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

Question 59

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

Answer

Displacement is maximum

Answer

Half way between them

Answer

Crossing mean position

Question 60

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

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

Answer

The potential energy is maximum at the mean position

Question 61

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

Answer

Fat molecules

Answer

All of these

Answer

Water molecules

Question 62

62. Simple harmonic motion is mathematically represented as

Answer

A α – x

Answer

V α – x

Answer

F α – x

Question 63

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

Answer

Independent of x

Question 64

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

Answer 175

Remains constant

Answer 176

Becomes zero

Answer 177

Driven harmonic vibration

Answer 178

Free vibration

Answer 179

Natural vibration

Answer 180

Simple harmonic vibration

Answer 181

Vibratory motion

Answer 182

Periodic motions

Answer 183

All of these

Answer 184

To and fro

Answer 185

V = √r² – x²

Answer 186

V = r² – x²

Answer 187

V = ω√r² – x²

Answer 188

None of these

Answer 189

Oscillation

Answer 190

Minimum only

Answer 191

Maximum as well minimum

Answer 192

Maximum only

Answer 193

Quadruple the mass

Answer 194

Half the mass

Answer 195

Reduce the mass to one fourth

Answer 196

Double the mass

Answer 197

Angular Momentum

Answer 198

Total Energy

Answer 199

P.E. Energy

Answer 200

K.E. Energy

Answer 201

On moving a body against gravitational force

Answer 202

One the rising of an air bubble in water

Answer 203

On stretching s spring

Answer 204

On compressing a spring

Answer 205

Force constant

Answer 206

Four times

Answer 207

Nine times

Answer 208

Three times

Answer 209

Earth spinning about its own axis

Answer 210

Ball bouncing between two rigid vertical walls

Answer 211

Wave moving through a string fixed at both ends.

Answer 212

Particle moving in a circle with uniform speed.

Answer 213

None of these

Answer 214

X = X₀ cos (ωt + φ)

Answer 215

X = X₀ sin ωt

Answer 216

X = X₀ cos ωt

Answer 217

Reduce the mass to one-fourth

Answer 218

Double the mass

Answer 219

Half the mass

Answer 220

Quadruple the mass

Answer 221

Square of its length

Answer 222

Its length

Answer 223

Square root of its length

Answer 224

4π second

Answer 225

2π second

Answer 226

Restoring force

Answer 227

Applied force

Answer 228

None of these

Answer 229

Frictional force

Answer 230

The acceleration is minimum at the mean position

Answer 231

The kinetic energy is maximum at the mean position

Answer 232

The force on the particle is maximum at the ends

Answer 233

The potential energy is maximum at the mean position

Answer 234

Extreme position

Answer 235

Mean position

Answer 236

Between mean and extreme position

Answer 237

None of these

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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