Physics Oscillations Online Mcqs Test

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Question 1

1. In vibratory motion

Answer

Total momentum remain constant

Answer

K.E. remain constant

Answer

P.E. remains constant

Answer

Total energy remain constant

Question 2

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

Question 3

3. 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

Acceleration, force, total energy

Answer

Angular frequency, Acceleration, force

Answer

Amplitude, angular frequency, acceleration

Question 4

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

Answer

Extreme Position

Answer

Both a and b

Answer

Mean Position

Question 5

5. The relation for the displacement in SHM is

Answer

X = X₀ cos (ωt + φ)

Answer

X = X₀ cos ωt

Answer

None of these

Answer

X = X₀ sin ωt

Question 6

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

Answer

Crossing mean position

Answer

Half way between them

Answer

Displacement is maximum

Question 7

7. The body oscillates due to a

Answer

None of these

Answer

Applied force

Answer

Restoring force

Answer

Frictional force

Question 8

8. A simple harmonic motion in which the

Answer

Acceleration produced is due to restoring force

Answer

Acceleration is directed towards the mean position

Answer

Acceleration is directly proportional to displacement

Answer

All of these

Question 9

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

Question 10

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

Answer

Extreme position

Answer

Both a and b

Answer

Mean position

Question 11

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

Answer

Forced vibration

Answer

Free vibrations

Answer

Powerful vibration

Answer

None of these

Question 12

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

Answer

All of these

Question 13

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

Answer

Becomes zero

Answer

Remains constant

Question 14

14. Restoring force is defined as

Question 15

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

Answer

Simple Harmonic Motion

Answer

Angular Motion

Answer

Circular Motion

Answer

Rectilinear Motion

Question 16

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

Answer

4π second

Answer

2π second

Question 17

17. A simple pendulum is defined as

Answer

All of these

Answer

Light inextensible string

Answer

Friction less support

Answer

Small heavy mass

Question 18

18. Phase of SHM describes

Answer

Both displacement and direction of motion

Answer

Neither displacement nor direction of motion

Answer

Displacement only

Answer

Direction of motion only

Question 19

19. Hook’s law is defined as

Answer

F and X has no relation

Answer

None of these

Answer

F and X are direct proportional

Answer

F and X are inverse proportional

Question 20

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

Answer

Wave moving through a string fixed at both ends.

Answer

Earth spinning about its own axis

Answer

Ball bouncing between two rigid vertical walls

Answer

Particle moving in a circle with uniform speed.

Question 21

21. Frequency is the term used for

Answer

Time to take one Vibration

Answer

Number of vibration for second

Answer

None of these

Answer

Number of vibrations per minute

Question 22

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

Question 23

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

Answer

Extra ordinarily large

Question 24

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

Answer

Half the mass

Answer

Double the mass

Answer

Quadruple the mass

Answer

Reduce the mass to one fourth

Question 25

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

Answer

Independent of x

Question 26

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

Answer

Between mean and extreme position

Answer

Extreme position

Answer

None of these

Answer

Mean position

Question 27

27. 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

Wave motion

Answer

Rotatory motion

Answer

Rectilinear motion

Answer

Periodic motion

Question 28

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

Answer

Quadruple the mass

Answer

Double the mass

Answer

Reduce the mass to one-fourth

Answer

Half the mass

Question 29

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

Answer

Natural frequency

Answer

None of these

Answer

Minimum frequency

Answer

Maximum frequency

Question 30

30. The waves produced in microwave oven have a wavelength

Question 31

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

Answer

Nine times

Answer

Four times

Answer

Three times

Question 32

32. 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 33

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

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

Answer

The potential energy is maximum at the mean position

Question 34

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

Question 35

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

Answer

4 x amplitude

Answer

Square of amplitude

Answer

2 x amplitude

Question 36

36. Identify the exact statement among the following:

Answer

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

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

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°.

Question 37

37. 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)/2

Answer

k₁ + k₂

Answer

√k₁ k₂

Answer

k₁ k₂/( k₁ + k₂)

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

None of these

Answer

V = r² – x²

Answer

V = √r² – x²

Question 39

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

Answer

Wavelength of the various bodies

Answer

None of these

Answer

Wavelength of the various bodies

Answer

Amplitudes of the various bodies

Question 40

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

Question 41

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

Answer

All of these

Answer

X₀ ω cos θ

Answer

Vp sin (90° - θ)

Question 42

42. 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 increased

Answer

The length of the pendulum is decreased

Answer

The mass of the pendulum is decreased

Answer

The length of the pendulum is increased

Question 43

43. 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 44

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

Answer

Oscillation

Question 45

45. 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 46

46. Forced vibration are known as

Answer

Driven harmonic vibration

Answer

Simple harmonic vibration

Answer

Natural vibration

Answer

Free vibration

Question 47

47. 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 increased

Answer

The length of the pendulum is decreased

Answer

The mass of the pendulum is increased

Answer

The mass of the pendulum is decreased

Question 48

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

Answer

From means position to back to its means position

Answer

Means position to upper extreme position

Answer

From extreme position

Answer

All of these

Question 49

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

Answer

None of these

Answer

Zero in the mean position

Answer

Maximum in the extreme position

Question 50

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

Answer

Remains constant

Answer

Becomes zero

Question 51

51. 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

Time period

Answer

Doppler’s effect

Question 52

52. The restoring force applied on the pendulum

Answer

-mg cos θ

Answer

-mg sin θ

Question 53

53. In vibratory motion which parameter remains constant?

Answer

P.E. Energy

Answer

Total Energy

Answer

K.E. Energy

Answer

Angular Momentum

Question 54

54. Simple harmonic motion is mathematically represented as

Answer

V α – x

Answer

F α – x

Answer

A α – x

Question 55

55. Natural frequency of simple pendulum depends upon

Answer

Square of its length

Answer

Its length

Answer

Square root of its length

Question 56

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

Answer

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

Answer

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

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.

Question 57

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

Answer

Minimum only

Answer

Maximum only

Answer

Maximum as well minimum

Question 58

58. Oscillatory motion is a type of motion which is

Answer

To and fro

Answer

Vibratory motion

Answer

All of these

Answer

Periodic motions

Question 59

59. The vibrating bodies produce

Answer

Disturbance

Answer

All of these

Question 60

60. 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 61

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

Question 62

62. The damped oscillations are produced due to

Answer

Air resistance

Answer

System friction

Answer

All of these

Answer

Frictional support of the system

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. Turning of a radio set is an example of

Answer

Electrical resonance

Answer

Free vibration

Answer

Musical resonance

Answer

Mechanical resonance

Answer 188

None of these

Answer 189

None of these

Answer 190

Driving source

Answer 191

Applied force

Answer 192

Starting source

Answer 193

None of these

Answer 194

None of these

Answer 195

Square wave

Answer 196

Saw tooth waveform

Answer 197

Become infinite

Answer 198

Remain unaffected

Answer 199

Restoring force is small

Answer 200

Applied periodic force is small

Answer 201

Quality factor is small

Answer 202

Damping force is small

Answer 203

None of these

Answer 204

Time period will depend on the weight of the boy.

Answer 205

Time period will not change

Answer 206

Time period will decrease

Answer 207

Time period will increase

Answer 208

On moving a body against gravitational force

Answer 209

One the rising of an air bubble in water

Answer 210

On compressing a spring

Answer 211

On stretching s spring

Answer 212

Potential energy

Answer 213

Phase difference between acceleration and displacement

Answer 214

Difference between kinetic energy and potential energy

Answer 215

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

Answer 216

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

Answer 217

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

Answer 218

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

Answer 219

Becomes zero

Answer 220

Remains constant

Answer 221

Force constant

Answer 222

Fat molecules

Answer 223

Water molecules

Answer 224

All of these

Answer 225

Vibration S¯²

Answer 226

Becomes Double

Answer 227

Becomes one half

Answer 228

Become on fourth

Answer 229

Remains same

Answer 230

P.E. = ½ KX₀²

Answer 231

P.E. = ½ KX²

Answer 232

None of these

Answer 233

P.E. = ½ K²X²

Answer 234

P.E.max 1.2 KX²

Answer 235

None of these

Answer 236

P.E.max 1.2 KX₀²

Answer 237

P.E.max 1.2 K² X

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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