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

Answer

Maximum as well minimum

Answer

Minimum only

Answer

Maximum only

Question 3

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

Answer

All of these

Question 4

4. The relation for the displacement in SHM is

Answer

X = X₀ cos ωt

Answer

X = X₀ sin ωt

Answer

None of these

Answer

X = X₀ cos (ωt + φ)

Question 5

5. Natural frequency of simple pendulum depends upon

Answer

Its length

Answer

Square of its length

Answer

Square root of its length

Question 6

6. 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 7

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

Question 8

8. Hook’s law is defined as

Answer

F and X are inverse proportional

Answer

F and X has no relation

Answer

F and X are direct proportional

Answer

None of these

Question 9

9. Turning of a radio set is an example of

Answer

Mechanical resonance

Answer

Free vibration

Answer

Electrical resonance

Answer

Musical resonance

Question 10

10. 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 11

11. 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

Potential energy

Answer

Difference between kinetic energy and potential energy

Question 12

12. 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 13

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

Answer

Damping force is small

Answer

Applied periodic force is small

Answer

Quality factor is small

Answer

Restoring force is small

Question 14

14. The energy of the oscillation comes from the

Answer

None of these

Answer

Driving source

Answer

Starting source

Answer

Applied force

Question 15

15. Frequency is the term used for

Answer

None of these

Answer

Number of vibrations per minute

Answer

Time to take one Vibration

Answer

Number of vibration for second

Question 16

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

Answer

Double the mass

Answer

Quadruple the mass

Answer

Half the mass

Answer

Reduce the mass to one-fourth

Question 17

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

Answer

None of these

Question 18

18. The vibrating bodies produce

Answer

Disturbance

Answer

All of these

Question 19

19. S.I unit of frequency is

Answer

Vibration S¯²

Question 20

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

Answer

Mean position

Answer

Both a and b

Answer

Extreme position

Question 21

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

Answer

Becomes zero

Answer

Remains constant

Question 22

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

Question 23

23. 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 24

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

Answer

Mean Position

Answer

Both a and b

Answer

Extreme Position

Question 25

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

Answer

Remains same

Answer

Becomes one half

Answer

Becomes Double

Answer

Become on fourth

Question 26

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

Answer

Quadruple the mass

Answer

Double the mass

Answer

Half the mass

Answer

Reduce the mass to one fourth

Question 27

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

Answer

4π second

Answer

2π second

Question 28

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

Answer

Extreme position

Answer

Mean position

Answer

None of these

Answer

Between mean and extreme position

Question 29

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

Answer

Particle moving in a circle with uniform speed.

Answer

Earth spinning about its own axis

Answer

Ball bouncing between two rigid vertical walls

Answer

Wave moving through a string fixed at both ends.

Question 30

30. In simple harmonic motion

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.

Answer

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

Question 31

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

Question 32

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

Answer

Displacement is maximum

Answer

Crossing mean position

Answer

Half way between them

Question 33

33. Restoring force is defined as

Question 34

34. Phase of SHM describes

Answer

Displacement only

Answer

Both displacement and direction of motion

Answer

Neither displacement nor direction of motion

Answer

Direction of motion only

Question 35

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

Answer

None of these

Answer

Amplitudes of the various bodies

Answer

Wavelength of the various bodies

Answer

Wavelength of the various bodies

Question 36

36. In vibratory motion which parameter remains constant?

Answer

Total Energy

Answer

P.E. Energy

Answer

Angular Momentum

Answer

K.E. Energy

Question 37

37. A simple pendulum is defined as

Answer

All of these

Answer

Light inextensible string

Answer

Friction less support

Answer

Small heavy mass

Question 38

38. 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 KX₀²

Answer

P.E.max 1.2 K² X

Question 39

39. The restoring force applied on the pendulum

Answer

-mg sin θ

Answer

-mg cos θ

Question 40

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

Answer

Water molecules

Answer

Fat molecules

Answer

All of these

Question 41

41. The damping depends upon

Answer

None of these

Question 42

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

Answer

Nine times

Answer

Four times

Answer

Three times

Question 43

43. The waves produced in microwave oven have a wavelength

Question 44

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

Answer

Both kinetic and potential energies are maximum

Answer

Kinetic energy is minimum, potential energy is maximum

Answer

Both kinetic and potential energies are minimum

Answer

Kinetic energy is maximum, potential energy is minimum

Question 45

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

Answer

Remains constant

Answer

Becomes zero

Question 46

46. In vibratory motion

Answer

K.E. remain constant

Answer

Total momentum remain constant

Answer

Total energy remain constant

Answer

P.E. remains constant

Question 47

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

Answer

From means position to back to its means position

Answer

All of these

Answer

From extreme position

Answer

Means position to upper extreme position

Question 48

48. 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 49

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

Answer

Extra ordinarily large

Question 50

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

Answer

A straight line

Answer

A hyperbola

Answer

An ellipse

Question 51

51. 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 52

52. The frequency of second pendulum is

Answer

None of these

Question 53

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

Answer

Rectilinear Motion

Answer

Simple Harmonic Motion

Answer

Angular Motion

Answer

Circular Motion

Question 54

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

Question 55

55. Oscillatory motion is a type of motion which is

Answer

All of these

Answer

Periodic motions

Answer

Vibratory motion

Answer

To and fro

Question 56

56. The body oscillates due to a

Answer

Restoring force

Answer

None of these

Answer

Applied force

Answer

Frictional force

Question 57

57. 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 58

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

Answer

Remains constant

Answer

Becomes zero

Question 59

59. The waveform of simple harmonic motion will be

Answer

Saw tooth waveform

Answer

None of these

Answer

Square wave

Question 60

60. A simple harmonic motion in which the

Answer

Acceleration is directly proportional to displacement

Answer

Acceleration produced is due to restoring force

Answer

Acceleration is directed towards the mean position

Answer

All of these

Question 61

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

Answer

Force constant

Question 62

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

Question 63

63. 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 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 acceleration is proportional to, and in the opposite direction to, the displacement

Question 64

64. 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

Answer 173

First A then B

Answer 174

Remain the same

Answer 175

None of these

Answer 176

Zero in the mean position

Answer 177

Maximum in the extreme position

Answer 178

Frictional support of the system

Answer 179

Air resistance

Answer 180

System friction

Answer 181

All of these

Answer 182

Independent of x

Answer 183

Amplitude, angular frequency, acceleration

Answer 184

Total energy, amplitude, angular frequency

Answer 185

Acceleration, force, total energy

Answer 186

Angular frequency, Acceleration, force

Answer 187

The acceleration is minimum at the mean position

Answer 188

The kinetic energy is maximum at the mean position

Answer 189

The force on the particle is maximum at the ends

Answer 190

The potential energy is maximum at the mean position

Answer 191

The length of the pendulum is decreased

Answer 192

The mass of the pendulum is decreased

Answer 193

The mass of the pendulum is increased

Answer 194

The length of the pendulum is increased

Answer 195

Minimum frequency

Answer 196

Natural frequency

Answer 197

None of these

Answer 198

Maximum frequency

Answer 199

Simple harmonic vibration

Answer 200

Free vibration

Answer 201

Natural vibration

Answer 202

Driven harmonic vibration

Answer 203

(k₁ + k₂)/2

Answer 204

√k₁ k₂

Answer 205

k₁ k₂/( k₁ + k₂)

Answer 206

k₁ + k₂

Answer 207

F α – x

Answer 208

A α – x

Answer 209

V α – x

Answer 210

The kinetic energy is maximum at the mean position

Answer 211

The acceleration is minimum at the mean position

Answer 212

The force on the particle is maximum at the ends

Answer 213

The potential energy is maximum at the mean position

Answer 214

P.E. = ½ KX₀²

Answer 215

P.E. = ½ KX²

Answer 216

P.E. = ½ K²X²

Answer 217

None of these

Answer 218

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

Answer 219

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

Answer 220

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

Answer 221

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 222

Oscillation

Answer 223

Periodic motion

Answer 224

Rectilinear motion

Answer 225

Wave motion

Answer 226

Rotatory motion

Answer 227

V = √r² – x²

Answer 228

None of these

Answer 229

V = ω√r² – x²

Answer 230

V = r² – x²

Answer 231

Tension is string

Answer 232

Drag force of air

Answer 233

None of these

Answer 234

On moving a body against gravitational force

Answer 235

On compressing a spring

Answer 236

One the rising of an air bubble in water

Answer 237

On stretching s spring

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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