Physics Oscillations Online Mcqs Test

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Question 1

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

Answer

Ball bouncing between two rigid vertical walls

Answer

Earth spinning about its own axis

Answer

Wave moving through a string fixed at both ends.

Answer

Particle moving in a circle with uniform speed.

Question 2

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

Answer

Half way between them

Answer

Displacement is maximum

Answer

Crossing mean position

Question 3

3. The energy of the oscillation comes from the

Answer

None of these

Answer

Starting source

Answer

Applied force

Answer

Driving source

Question 4

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

Answer

The acceleration is minimum at the mean position

Answer

The potential energy is maximum 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 5

5. The damped oscillations are produced due to

Answer

Frictional support of the system

Answer

System friction

Answer

Air resistance

Answer

All of these

Question 6

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

Answer

Wavelength of the various bodies

Answer

Wavelength of the various bodies

Answer

None of these

Answer

Amplitudes of the various bodies

Question 7

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

Answer

None of these

Answer

Natural frequency

Answer

Maximum frequency

Answer

Minimum frequency

Question 8

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

Answer

Becomes zero

Answer

Remains constant

Question 9

9. The body oscillates due to a

Answer

Applied force

Answer

Frictional force

Answer

Restoring force

Answer

None of these

Question 10

10. Restoring force is defined as

Question 11

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

Answer

Circular Motion

Answer

Angular Motion

Answer

Simple Harmonic Motion

Answer

Rectilinear Motion

Question 12

12. Oscillatory motion is a type of motion which is

Answer

To and fro

Answer

Periodic motions

Answer

Vibratory motion

Answer

All of these

Question 13

13. 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

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

Answer

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

Question 14

14. 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 15

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

Answer

Mean Position

Answer

Extreme Position

Answer

Both a and b

Question 16

16. 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 17

17. 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

Wavelength

Answer

Doppler’s effect

Answer

Time period

Question 18

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

Answer

Three times

Answer

Nine times

Answer

Four times

Question 19

19. 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 20

20. 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 21

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

Answer

P.E. = ½ KX²

Answer

P.E. = ½ KX₀²

Answer

None of these

Answer

P.E. = ½ K²X²

Question 22

22. The waveform of simple harmonic motion will be

Answer

None of these

Answer

Saw tooth waveform

Answer

Square wave

Question 23

23. The waves produced in microwave oven have a wavelength

Question 24

24. 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 not change

Answer

Time period will depend on the weight of the boy.

Answer

Time period will increase

Answer

Time period will decrease

Question 25

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

Question 26

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

Answer

Extra ordinarily large

Question 27

27. 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 28

28. Simple harmonic motion is mathematically represented as

Answer

V α – x

Answer

F α – x

Answer

A α – x

Question 29

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

Answer

4π second

Answer

2π second

Question 30

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

Answer

Tension is string

Answer

Drag force of air

Answer

None of these

Question 31

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

Answer

Remains constant

Answer

Becomes zero

Question 32

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

Answer

Water molecules

Answer

All of these

Answer

Fat molecules

Question 33

33. 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 34

34. The kinetic energy is maximum when mass at equilibrium

Answer

None of these

Answer

P.E.max 1.2 KX₀²

Answer

P.E.max 1.2 KX²

Answer

P.E.max 1.2 K² X

Question 35

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

Question 36

36. In which case does the potential energy decreases?

Answer

On compressing a spring

Answer

One the rising of an air bubble in water

Answer

On stretching s spring

Answer

On moving a body against gravitational force

Question 37

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

Answer

X₀ ω cos θ

Answer

All of these

Answer

Vp sin (90° - θ)

Question 38

38. 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

Answer

The length of the pendulum is increased

Answer

The mass of the pendulum is increased

Answer

The length of the pendulum is decreased

Question 39

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

Question 40

40. In simple harmonic motion

Answer

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

Answer

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

Answer

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

Answer

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

Question 41

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

Answer

Minimum only

Answer

Maximum only

Answer

Maximum as well minimum

Question 42

42. The vibrating bodies produce

Answer

Disturbance

Answer

All of these

Question 43

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

Answer

Between mean and extreme position

Answer

Mean position

Answer

None of these

Answer

Extreme position

Question 44

44. A simple harmonic motion in which the

Answer

Acceleration is directly proportional to displacement

Answer

Acceleration is directed towards the mean position

Answer

Acceleration produced is due to restoring force

Answer

All of these

Question 45

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

Answer

Become on fourth

Answer

Remains same

Answer

Becomes Double

Answer

Becomes one half

Question 46

46. S.I unit of frequency is

Answer

Vibration S¯²

Question 47

47. In vibratory motion which parameter remains constant?

Answer

Angular Momentum

Answer

P.E. Energy

Answer

Total Energy

Answer

K.E. Energy

Question 48

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

Answer

Both a and b

Answer

Extreme position

Answer

Mean position

Question 49

49. In vibratory motion

Answer

K.E. remain constant

Answer

P.E. remains constant

Answer

Total momentum remain constant

Answer

Total energy remain constant

Question 50

50. The restoring force applied on the pendulum

Answer

-mg sin θ

Answer

-mg cos θ

Question 51

51. The damping depends upon

Answer

None of these

Question 52

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

Question 53

53. 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

Answer

(k₁ + k₂)/2

Answer

k₁ + k₂

Question 54

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

Question 55

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

Answer

Restoring force is small

Answer

Quality factor is small

Answer

Applied periodic force is small

Answer

Damping force is small

Question 56

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

Answer

None of these

Question 57

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

Answer

Oscillation

Question 58

58. The relation for the displacement in SHM is

Answer

X = X₀ cos (ωt + φ)

Answer

None of these

Answer

X = X₀ cos ωt

Answer

X = X₀ sin ωt

Question 59

59. A simple pendulum is defined as

Answer

Small heavy mass

Answer

All of these

Answer

Light inextensible string

Answer

Friction less support

Question 60

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

Answer

All of these

Question 61

61. Phase of SHM describes

Answer

Displacement only

Answer

Neither displacement nor direction of motion

Answer

Direction of motion only

Answer

Both displacement and direction of motion

Question 62

62. Turning of a radio set is an example of

Answer

Mechanical resonance

Answer

Electrical resonance

Answer

Free vibration

Answer

Musical resonance

Question 63

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

Answer

Force constant

Question 64

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

Answer

An ellipse

Answer

A straight line

Answer

A hyperbola

Answer 176

Quadruple the mass

Answer 177

Double the mass

Answer 178

Reduce the mass to one-fourth

Answer 179

Half the mass

Answer 180

Becomes zero

Answer 181

Remains constant

Answer 182

Wave motion

Answer 183

Periodic motion

Answer 184

Rectilinear motion

Answer 185

Rotatory motion

Answer 186

The mass of the pendulum is decreased

Answer 187

The length of the pendulum is increased

Answer 188

The length of the pendulum is decreased

Answer 189

The mass of the pendulum is increased

Answer 190

Quadruple the mass

Answer 191

Reduce the mass to one fourth

Answer 192

Half the mass

Answer 193

Double the mass

Answer 194

Natural vibration

Answer 195

Free vibration

Answer 196

Driven harmonic vibration

Answer 197

Simple harmonic vibration

Answer 198

From extreme position

Answer 199

From means position to back to its means position

Answer 200

All of these

Answer 201

Means position to upper extreme position

Answer 202

None of these

Answer 203

Square of its length

Answer 204

Square root of its length

Answer 205

Its length

Answer 206

V = ω√r² – x²

Answer 207

V = r² – x²

Answer 208

None of these

Answer 209

V = √r² – x²

Answer 210

Kinetic energy is maximum, potential energy is minimum

Answer 211

Both kinetic and potential energies are maximum

Answer 212

Kinetic energy is minimum, potential energy is maximum

Answer 213

Both kinetic and potential energies are minimum

Answer 214

F and X has no relation

Answer 215

F and X are inverse proportional

Answer 216

None of these

Answer 217

F and X are direct proportional

Answer 218

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

Answer 219

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

Answer 220

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

Answer 221

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

Answer 222

Independent of x

Answer 223

Phase difference between acceleration and displacement

Answer 224

Potential energy

Answer 225

Difference between kinetic energy and potential energy

Answer 226

None of these

Answer 227

Time to take one Vibration

Answer 228

Number of vibration for second

Answer 229

Number of vibrations per minute

Answer 230

The potential energy is maximum at the mean position

Answer 231

The acceleration is minimum at the mean position

Answer 232

The kinetic energy is maximum at the mean position

Answer 233

The force on the particle is maximum at the ends

Answer 234

Powerful vibration

Answer 235

Free vibrations

Answer 236

None of these

Answer 237

Forced 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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