Physics Oscillations Online Mcqs Test

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Question 1

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

Answer

Becomes zero

Answer

Remains constant

Question 2

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

Question 3

3. 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 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.

Answer

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

Question 4

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

Answer

None of these

Question 5

5. The kinetic energy is maximum when mass at equilibrium

Answer

P.E.max 1.2 KX²

Answer

None of these

Answer

P.E.max 1.2 K² X

Answer

P.E.max 1.2 KX₀²

Question 6

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

Question 7

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

Answer

Zero in the mean position

Answer

Maximum in the extreme position

Answer

None of these

Question 8

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

Answer

Oscillation

Question 9

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

Answer

None of these

Answer

Mean position

Answer

Extreme position

Answer

Between mean and extreme position

Question 10

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

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

Answer

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

Question 11

11. 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 force on the particle is maximum at the ends

Answer

The kinetic energy is maximum at the mean position

Question 12

12. Frequency is the term used for

Answer

Number of vibration for second

Answer

None of these

Answer

Time to take one Vibration

Answer

Number of vibrations per minute

Question 13

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

Answer

Becomes zero

Answer

Remains constant

Question 14

14. 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

Amplitude, angular frequency, acceleration

Answer

Total energy, amplitude, angular frequency

Answer

Angular frequency, Acceleration, force

Question 15

15. Hook’s law is defined as

Answer

F and X are inverse proportional

Answer

None of these

Answer

F and X has no relation

Answer

F and X are direct proportional

Question 16

16. Restoring force is defined as

Question 17

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

Question 18

18. The waveform of simple harmonic motion will be

Answer

Saw tooth waveform

Answer

None of these

Answer

Square wave

Question 19

19. In which case does the potential energy decreases?

Answer

On stretching s spring

Answer

On moving a body against gravitational force

Answer

One the rising of an air bubble in water

Answer

On compressing a spring

Question 20

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

Answer

All of these

Question 21

21. Natural frequency of simple pendulum depends upon

Answer

Square root of its length

Answer

Square of its length

Answer

Its length

Question 22

22. 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 23

23. The damped oscillations are produced due to

Answer

All of these

Answer

System friction

Answer

Frictional support of the system

Answer

Air resistance

Question 24

24. 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 25

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

Answer

Both a and b

Answer

Mean position

Answer

Extreme position

Question 26

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

Question 27

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

Answer

None of these

Answer

Minimum frequency

Answer

Maximum frequency

Answer

Natural frequency

Question 28

28. 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

Doppler’s effect

Answer

Time period

Answer

Wavelength

Question 29

29. 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/( k₁ + k₂)

Answer

(k₁ + k₂)/2

Answer

√k₁ k₂

Question 30

30. 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 decreased

Answer

The mass of the pendulum is increased

Answer

The length of the pendulum is increased

Question 31

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

Answer

Drag force of air

Answer

None of these

Answer

Tension is string

Question 32

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

Answer

All of these

Answer

Water molecules

Answer

Fat molecules

Question 33

33. The relation for the displacement in SHM is

Answer

X = X₀ cos ωt

Answer

None of these

Answer

X = X₀ sin ωt

Answer

X = X₀ cos (ωt + φ)

Question 34

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

Answer

Square of amplitude

Answer

2 x amplitude

Answer

4 x amplitude

Question 35

35. 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 36

36. A simple harmonic motion in which the

Answer

All of these

Answer

Acceleration is directed towards the mean position

Answer

Acceleration is directly proportional to displacement

Answer

Acceleration produced is due to restoring force

Question 37

37. Simple harmonic motion is mathematically represented as

Answer

V α – x

Answer

A α – x

Answer

F α – x

Question 38

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

Answer

Force constant

Question 39

39. 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 40

40. 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 41

41. 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 42

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

Answer

Remains same

Answer

Becomes Double

Answer

Becomes one half

Answer

Become on fourth

Question 43

43. The waves produced in microwave oven have a wavelength

Question 44

44. 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 decrease

Answer

Time period will depend on the weight of the boy.

Answer

Time period will increase

Answer

Time period will not change

Question 45

45. Forced vibration are known as

Answer

Driven harmonic vibration

Answer

Natural vibration

Answer

Free vibration

Answer

Simple harmonic vibration

Question 46

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

Answer

Becomes zero

Answer

Remains constant

Question 47

47. A simple pendulum is defined as

Answer

Friction less support

Answer

Light inextensible string

Answer

Small heavy mass

Answer

All of these

Question 48

48. 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 49

49. 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

Difference between kinetic energy and potential energy

Answer

Potential energy

Question 50

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

Question 51

51. Phase of SHM describes

Answer

Direction of motion only

Answer

Both displacement and direction of motion

Answer

Displacement only

Answer

Neither displacement nor direction of motion

Question 52

52. The body oscillates due to a

Answer

None of these

Answer

Restoring force

Answer

Applied force

Answer

Frictional force

Question 53

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

Answer

V = √r² – x²

Answer

None of these

Answer

V = ω√r² – x²

Answer

V = r² – x²

Question 54

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

Question 55

55. The damping depends upon

Answer

None of these

Question 56

56. The restoring force applied on the pendulum

Answer

-mg sin θ

Answer

-mg cos θ

Question 57

57. The vibrating bodies produce

Answer

Disturbance

Answer

All of these

Question 58

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

Answer

Angular Motion

Answer

Simple Harmonic Motion

Answer

Rectilinear Motion

Answer

Circular Motion

Question 59

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

Answer

P.E. = ½ K²X²

Answer

None of these

Answer

P.E. = ½ KX₀²

Answer

P.E. = ½ KX²

Question 60

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

Question 61

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

Answer

2π second

Answer

4π second

Question 62

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

Question 63

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

Answer

Extra ordinarily large

Question 64

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

Answer 166

Wave moving through a string fixed at both ends.

Answer 167

Particle moving in a circle with uniform speed.

Answer 168

Earth spinning about its own axis

Answer 169

Ball bouncing between two rigid vertical walls

Answer 170

Periodic motions

Answer 171

To and fro

Answer 172

Vibratory motion

Answer 173

All of these

Answer 174

Mechanical resonance

Answer 175

Free vibration

Answer 176

Musical resonance

Answer 177

Electrical resonance

Answer 178

Quality factor is small

Answer 179

Applied periodic force is small

Answer 180

Damping force is small

Answer 181

Restoring force is small

Answer 182

A hyperbola

Answer 183

An ellipse

Answer 184

A straight line

Answer 185

From means position to back to its means position

Answer 186

From extreme position

Answer 187

Means position to upper extreme position

Answer 188

All of these

Answer 189

Vibration S¯²

Answer 190

Extreme Position

Answer 191

Mean Position

Answer 192

Both a and b

Answer 193

Driving source

Answer 194

Applied force

Answer 195

None of these

Answer 196

Starting source

Answer 197

Maximum as well minimum

Answer 198

Maximum only

Answer 199

Minimum only

Answer 200

Four times

Answer 201

Three times

Answer 202

Nine times

Answer 203

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

Answer 204

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

Answer 205

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 206

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

Answer 207

Remain the same

Answer 208

First A then B

Answer 209

Half the mass

Answer 210

Double the mass

Answer 211

Quadruple the mass

Answer 212

Reduce the mass to one fourth

Answer 213

Forced vibration

Answer 214

Free vibrations

Answer 215

None of these

Answer 216

Powerful vibration

Answer 217

None of these

Answer 218

Wavelength of the various bodies

Answer 219

Wavelength of the various bodies

Answer 220

Amplitudes of the various bodies

Answer 221

Angular Momentum

Answer 222

Total Energy

Answer 223

K.E. Energy

Answer 224

P.E. Energy

Answer 225

Kinetic energy is minimum, potential energy is maximum

Answer 226

Both kinetic and potential energies are maximum

Answer 227

Both kinetic and potential energies are minimum

Answer 228

Kinetic energy is maximum, potential energy is minimum

Answer 229

None of these

Answer 230

Displacement is maximum

Answer 231

Half way between them

Answer 232

Crossing mean position

Answer 233

Independent of x

Answer 234

Total energy remain constant

Answer 235

Total momentum remain constant

Answer 236

K.E. remain constant

Answer 237

P.E. remains constant

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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