Physics Oscillations Online Mcqs Test

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Question 1

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

Question 2

2. Simple harmonic motion is mathematically represented as

Answer

V α – x

Answer

F α – x

Answer

A α – x

Question 3

3. 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 4

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

Answer

None of these

Answer

Tension is string

Answer

Drag force of air

Question 5

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

Question 6

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

Answer

Half way between them

Answer

Crossing mean position

Answer

Displacement is maximum

Question 7

7. 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 8

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

Answer

All of these

Question 9

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

Question 10

10. 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 always given by the expression x = x₀ sin ωt.

Answer

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

Answer

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

Question 11

11. The waveform of simple harmonic motion will be

Answer

None of these

Answer

Square wave

Answer

Saw tooth waveform

Question 12

12. In vibratory motion which parameter remains constant?

Answer

Angular Momentum

Answer

K.E. Energy

Answer

P.E. Energy

Answer

Total Energy

Question 13

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

Answer

Half the mass

Answer

Double the mass

Answer

Quadruple the mass

Answer

Reduce the mass to one-fourth

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. 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 KX²

Answer

P.E. = ½ KX₀²

Question 16

16. The kinetic energy is maximum when mass at equilibrium

Answer

P.E.max 1.2 KX²

Answer

P.E.max 1.2 K² X

Answer

None of these

Answer

P.E.max 1.2 KX₀²

Question 17

17. 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 18

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

Answer

Becomes zero

Answer

Remains constant

Question 19

19. 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 20

20. The restoring force applied on the pendulum

Answer

-mg cos θ

Answer

-mg sin θ

Question 21

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

Answer

4π second

Answer

2π second

Question 22

22. 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 23

23. A simple harmonic motion in which the

Answer

All of these

Answer

Acceleration is directly proportional to displacement

Answer

Acceleration produced is due to restoring force

Answer

Acceleration is directed towards the mean position

Question 24

24. The relation for the displacement in SHM is

Answer

X = X₀ cos ωt

Answer

X = X₀ cos (ωt + φ)

Answer

None of these

Answer

X = X₀ sin ωt

Question 25

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

Answer

Remains constant

Answer

Becomes zero

Question 26

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

Answer

Independent of x

Question 27

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

Question 28

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

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

Doppler’s effect

Answer

Time period

Answer

Wavelength

Question 30

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

Answer

Force constant

Question 31

31. Natural frequency of simple pendulum depends upon

Answer

Square root of its length

Answer

Its length

Answer

Square of its length

Question 32

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

Answer

None of these

Question 33

33. 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

Rotatory motion

Answer

Wave motion

Answer

Periodic motion

Answer

Rectilinear motion

Question 34

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

Answer

Restoring force is small

Answer

Quality factor is small

Answer

Damping force is small

Answer

Applied periodic force is small

Question 35

35. The frequency of second pendulum is

Answer

None of these

Question 36

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

Answer

V = √r² – x²

Answer

V = r² – x²

Answer

None of these

Answer

V = ω√r² – x²

Question 37

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

Answer

Both a and b

Answer

Mean position

Answer

Extreme position

Question 38

38. Frequency is the term used for

Answer

Number of vibrations per minute

Answer

Number of vibration for second

Answer

Time to take one Vibration

Answer

None of these

Question 39

39. 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 40

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

Answer

Extra ordinarily large

Question 41

41. The energy of the oscillation comes from the

Answer

Applied force

Answer

Starting source

Answer

Driving source

Answer

None of these

Question 42

42. Identify the exact statement among the following:

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

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 43

43. 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 increase

Answer

Time period will not change

Answer

Time period will depend on the weight of the boy.

Answer

Time period will decrease

Question 44

44. Oscillatory motion is a type of motion which is

Answer

All of these

Answer

To and fro

Answer

Vibratory motion

Answer

Periodic motions

Question 45

45. Phase of SHM describes

Answer

Direction of motion only

Answer

Neither displacement nor direction of motion

Answer

Displacement only

Answer

Both displacement and direction of motion

Question 46

46. Hook’s law is defined as

Answer

None of these

Answer

F and X has no relation

Answer

F and X are direct proportional

Answer

F and X are inverse proportional

Question 47

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

Answer

Minimum only

Answer

Maximum only

Answer

Maximum as well minimum

Question 48

48. 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 mass of the pendulum is decreased

Answer

The length of the pendulum is increased

Answer

The mass of the pendulum is increased

Question 49

49. A simple pendulum is defined as

Answer

All of these

Answer

Light inextensible string

Answer

Small heavy mass

Answer

Friction less support

Question 50

50. In which case does the potential energy decreases?

Answer

On compressing a spring

Answer

On moving a body against gravitational force

Answer

One the rising of an air bubble in water

Answer

On stretching s spring

Question 51

51. Forced vibration are known as

Answer

Simple harmonic vibration

Answer

Natural vibration

Answer

Free vibration

Answer

Driven harmonic vibration

Question 52

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

Answer

None of these

Answer

Extreme position

Answer

Mean position

Answer

Between mean and extreme position

Question 53

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

Question 54

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

Answer

Becomes one half

Answer

Become on fourth

Answer

Becomes Double

Answer

Remains same

Question 55

55. 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

Phase difference between acceleration and displacement

Answer

Potential energy

Question 56

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

Question 57

57. 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 58

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

Answer

Oscillation

Question 59

59. The damped oscillations are produced due to

Answer

Air resistance

Answer

All of these

Answer

Frictional support of the system

Answer

System friction

Question 60

60. The body oscillates due to a

Answer

Frictional force

Answer

Applied force

Answer

Restoring force

Answer

None of these

Question 61

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

Answer

From means position to back to its means position

Answer

All of these

Answer

Means position to upper extreme position

Answer

From extreme position

Question 62

62. The damping depends upon

Answer

None of these

Question 63

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

Question 64

64. 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

Answer

(k₁ + k₂)/2

Answer 174

Disturbance

Answer 175

All of these

Answer 176

Free vibrations

Answer 177

None of these

Answer 178

Forced vibration

Answer 179

Powerful vibration

Answer 180

X₀ ω cos θ

Answer 181

Vp sin (90° - θ)

Answer 182

All of these

Answer 183

Both a and b

Answer 184

Extreme Position

Answer 185

Mean Position

Answer 186

Wave moving through a string fixed at both ends.

Answer 187

Particle moving in a circle with uniform speed.

Answer 188

Earth spinning about its own axis

Answer 189

Ball bouncing between two rigid vertical walls

Answer 190

Total energy, amplitude, angular frequency

Answer 191

Acceleration, force, total energy

Answer 192

Amplitude, angular frequency, acceleration

Answer 193

Angular frequency, Acceleration, force

Answer 194

Musical resonance

Answer 195

Free vibration

Answer 196

Electrical resonance

Answer 197

Mechanical resonance

Answer 198

Kinetic energy is maximum, potential energy is minimum

Answer 199

Kinetic energy is minimum, potential energy is maximum

Answer 200

Both kinetic and potential energies are maximum

Answer 201

Both kinetic and potential energies are minimum

Answer 202

Rectilinear Motion

Answer 203

Angular Motion

Answer 204

Circular Motion

Answer 205

Simple Harmonic Motion

Answer 206

Zero in the mean position

Answer 207

Maximum in the extreme position

Answer 208

None of these

Answer 209

The potential energy is maximum at the mean position

Answer 210

The acceleration is minimum at the mean position

Answer 211

The force on the particle is maximum at the ends

Answer 212

The kinetic energy is maximum at the mean position

Answer 213

Minimum frequency

Answer 214

Maximum frequency

Answer 215

None of these

Answer 216

Natural frequency

Answer 217

Becomes zero

Answer 218

Remains constant

Answer 219

The length of the pendulum is decreased

Answer 220

The mass of the pendulum is increased

Answer 221

The length of the pendulum is increased

Answer 222

The mass of the pendulum is decreased

Answer 223

A hyperbola

Answer 224

An ellipse

Answer 225

A straight line

Answer 226

The force on the particle is maximum at the ends

Answer 227

The potential energy is maximum at the mean position

Answer 228

The kinetic energy is maximum at the mean position

Answer 229

The acceleration is minimum at the mean position

Answer 230

P.E. remains constant

Answer 231

Total energy remain constant

Answer 232

Total momentum remain constant

Answer 233

K.E. remain constant

Answer 234

Three times

Answer 235

Four times

Answer 236

Nine times

Answer 237

Vibration S¯²

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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