Physics Oscillations Online Mcqs Test

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Question 1

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

Answer

Both a and b

Answer

Mean Position

Answer

Extreme Position

Question 2

2. A simple pendulum is defined as

Answer

Light inextensible string

Answer

All of these

Answer

Friction less support

Answer

Small heavy mass

Question 3

3. Simple harmonic motion is mathematically represented as

Answer

V α – x

Answer

A α – x

Answer

F α – x

Question 4

4. 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 5

5. The waveform of simple harmonic motion will be

Answer

Saw tooth waveform

Answer

None of these

Answer

Square wave

Question 6

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

Question 7

7. 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 8

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

Answer

Maximum only

Answer

Minimum only

Answer

Maximum as well minimum

Question 9

9. The energy of the oscillation comes from the

Answer

None of these

Answer

Applied force

Answer

Starting source

Answer

Driving source

Question 10

10. 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 11

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

Answer

None of these

Answer

P.E. = ½ KX₀²

Answer

P.E. = ½ KX²

Answer

P.E. = ½ K²X²

Question 12

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

Answer

Extra ordinarily large

Question 13

13. A simple harmonic motion in which the

Answer

Acceleration produced is due to restoring force

Answer

All of these

Answer

Acceleration is directly proportional to displacement

Answer

Acceleration is directed towards the mean position

Question 14

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

Answer

Oscillation

Question 15

15. The vibrating bodies produce

Answer

All of these

Answer

Disturbance

Question 16

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

Answer

Becomes zero

Answer

Remains constant

Question 17

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

Question 18

18. The frequency of second pendulum is

Answer

None of these

Question 19

19. Oscillatory motion is a type of motion which is

Answer

Vibratory motion

Answer

All of these

Answer

Periodic motions

Answer

To and fro

Question 20

20. The relation for the displacement in SHM is

Answer

X = X₀ cos (ωt + φ)

Answer

X = X₀ sin ωt

Answer

X = X₀ cos ωt

Answer

None of these

Question 21

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

Answer

Independent of x

Question 22

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

Answer

All of these

Question 23

23. Natural frequency of simple pendulum depends upon

Answer

Its length

Answer

Square root of its length

Answer

Square of its length

Question 24

24. 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 moving a body against gravitational force

Answer

On stretching s spring

Question 25

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

Answer

Both a and b

Answer

Extreme position

Answer

Mean position

Question 26

26. The damped oscillations are produced due to

Answer

All of these

Answer

Frictional support of the system

Answer

Air resistance

Answer

System friction

Question 27

27. Restoring force is defined as

Question 28

28. 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 decreased

Answer

The length of the pendulum is increased

Answer

The mass of the pendulum is increased

Answer

The mass of the pendulum is decreased

Question 29

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

Answer

Time period

Answer

Wavelength

Answer

Doppler’s effect

Question 30

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

Answer

Half the mass

Answer

Quadruple the mass

Answer

Double the mass

Answer

Reduce the mass to one fourth

Question 31

31. 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

Potential energy

Answer

Phase difference between acceleration and displacement

Answer

Difference between kinetic energy and potential energy

Question 32

32. In simple harmonic motion

Answer

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

Answer

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

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.

Question 33

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

Answer

A hyperbola

Answer

An ellipse

Answer

A straight line

Question 34

34. The kinetic energy is maximum when mass at equilibrium

Answer

P.E.max 1.2 KX₀²

Answer

P.E.max 1.2 K² X

Answer

P.E.max 1.2 KX²

Answer

None of these

Question 35

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

Answer

All of these

Answer

Fat molecules

Answer

Water molecules

Question 36

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

Answer

From means position to back to its means position

Answer

From extreme position

Answer

All of these

Answer

Means position to upper extreme position

Question 37

37. In vibratory motion

Answer

Total momentum remain constant

Answer

K.E. remain constant

Answer

P.E. remains constant

Answer

Total energy remain constant

Question 38

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

Answer

V = ω√r² – x²

Answer

V = r² – x²

Answer

None of these

Answer

V = √r² – x²

Question 39

39. Forced vibration are known as

Answer

Natural vibration

Answer

Driven harmonic vibration

Answer

Simple harmonic vibration

Answer

Free vibration

Question 40

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

Answer

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

Answer

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

Answer

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

Answer

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

Question 41

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

Answer

Becomes zero

Answer

Remains constant

Question 42

42. Turning of a radio set is an example of

Answer

Electrical resonance

Answer

Musical resonance

Answer

Mechanical resonance

Answer

Free vibration

Question 43

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

Answer

Double the mass

Answer

Half the mass

Answer

Reduce the mass to one-fourth

Answer

Quadruple the mass

Question 44

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

Answer

2π second

Answer

4π second

Question 45

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

Question 46

46. The body oscillates due to a

Answer

Frictional force

Answer

None of these

Answer

Restoring force

Answer

Applied force

Question 47

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

Answer

Mean position

Answer

None of these

Answer

Between mean and extreme position

Answer

Extreme position

Question 48

48. The waves produced in microwave oven have a wavelength

Question 49

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

Question 50

50. Frequency is the term used for

Answer

Time to take one Vibration

Answer

None of these

Answer

Number of vibration for second

Answer

Number of vibrations per minute

Question 51

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

Question 52

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

Answer

Tension is string

Answer

None of these

Answer

Drag force of air

Question 53

53. 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 decrease

Answer

Time period will increase

Question 54

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

Question 55

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

Answer

Powerful vibration

Answer

None of these

Answer

Forced vibration

Answer

Free vibrations

Question 56

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

Answer

X₀ ω cos θ

Answer

Vp sin (90° - θ)

Answer

All of these

Question 57

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

Answer

First A then B

Answer

Remain the same

Question 58

58. 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 59

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

Answer

Nine times

Answer

Four times

Answer

Three times

Question 60

60. Identify the exact statement among the following:

Answer

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

Answer

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

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

Question 61

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

Answer

Total energy, amplitude, angular frequency

Answer

Amplitude, angular frequency, acceleration

Answer

Acceleration, force, total energy

Answer

Angular frequency, Acceleration, force

Question 62

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

Answer

Kinetic energy is minimum, potential energy is maximum

Answer

Kinetic energy is maximum, potential energy is minimum

Answer

Both kinetic and potential energies are maximum

Answer

Both kinetic and potential energies are minimum

Question 63

63. 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 kinetic energy is maximum at the mean position

Answer

The force on the particle is maximum at the ends

Answer

The acceleration is minimum at the mean position

Question 64

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

Answer

Wavelength of the various bodies

Answer

Wavelength of the various bodies

Answer

Amplitudes of the various bodies

Answer

None of these

Answer 183

K.E. Energy

Answer 184

Angular Momentum

Answer 185

P.E. Energy

Answer 186

Total Energy

Answer 187

Remain unaffected

Answer 188

Become infinite

Answer 189

None of these

Answer 190

Remains constant

Answer 191

Becomes zero

Answer 192

The mass of the pendulum is decreased

Answer 193

The length of the pendulum is increased

Answer 194

The mass of the pendulum is increased

Answer 195

The length of the pendulum is decreased

Answer 196

Square of amplitude

Answer 197

4 x amplitude

Answer 198

2 x amplitude

Answer 199

Zero in the mean position

Answer 200

None of these

Answer 201

Maximum in the extreme position

Answer 202

Vibration S¯²

Answer 203

Direction of motion only

Answer 204

Displacement only

Answer 205

Neither displacement nor direction of motion

Answer 206

Both displacement and direction of motion

Answer 207

Rectilinear Motion

Answer 208

Angular Motion

Answer 209

Circular Motion

Answer 210

Simple Harmonic Motion

Answer 211

Maximum frequency

Answer 212

Natural frequency

Answer 213

None of these

Answer 214

Minimum frequency

Answer 215

Ball bouncing between two rigid vertical walls

Answer 216

Wave moving through a string fixed at both ends.

Answer 217

Earth spinning about its own axis

Answer 218

Particle moving in a circle with uniform speed.

Answer 219

Force constant

Answer 220

-mg cos θ

Answer 221

-mg sin θ

Answer 222

F and X are inverse proportional

Answer 223

F and X has no relation

Answer 224

None of these

Answer 225

F and X are direct proportional

Answer 226

None of these

Answer 227

Half way between them

Answer 228

Displacement is maximum

Answer 229

Crossing mean position

Answer 230

Quality factor is small

Answer 231

Restoring force is small

Answer 232

Applied periodic force is small

Answer 233

Damping force is small

Answer 234

The kinetic energy is maximum at the mean position

Answer 235

The force on the particle is maximum at the ends

Answer 236

The potential energy is maximum at the mean position

Answer 237

The acceleration is minimum at the mean position

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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