Physics Waves Online Mcqs Test

Q: How can I prepare for Physics Waves Online Mcqs Test?

You can prepare for Physics Waves Online Mcqs Test by attempting the free online quizzes at Gotest.com.pk. We provide instant results, performance reports, and detailed explanations for every question.

Question 1

1. 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 increase

Answer

Time period will decrease

Answer

Time period will not change

Question 2

2. Two particles A and B of equal masses are suspended from two mass less springs of spring constants k₁ and k₂ respectively. If the maximum velocities, during oscillation, are equal, the ratio of amplitudes of A and B is:

Answer

√k₁/k₂

Answer

√k₂/k₁

Question 3

3. Which of the following changes at an antinode is a stationary wave?

Answer

Neither pressure nor density

Answer

Density only

Answer

Both pressure and density

Answer

Pressure only

Question 4

4. In stationary waves

Answer

Energy is uniformly distributed

Answer

Alternating maximum and minimum energy producing at nodes and antinodes

Answer

Energy is minimum at nodes and maximum at antinodes

Answer

Energy is maximum at nodes and minimum at antidotes

Question 5

5. Which one is not produce by sound waves in air?

Answer

Diffraction

Answer

Polarization

Answer

Refraction

Answer

Reflection

Question 6

6. Velocity of sound in vacuum (in m/s) is

Question 7

7. If is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice.

Answer

Can penetrate the wall

Answer

Has a definite pitch

Answer

Has a definite capacity

Answer

Has a definite quality

Question 8

8. 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 9

9. If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is

Question 10

10. What is frequency of radio waves transmitted by a station, if the wavelength of these waves is 300 m?

Question 11

11. Sound waves do not travel in vacuum because

Answer

They are transverse waves

Answer

They are stationary waves

Answer

They require material medium for propagation

Answer

They do not have enough energy

Question 12

12. Waves disturbances may also come in a concentrated bundles like stock waves from an airplane flying at:

Answer

Supersonic speed

Answer

None of these

Answer

Extra supersonic speed

Answer

Sonic speed

Question 13

13. In vibratory motion which parameter remains constant?

Answer

K.E. Energy

Answer

Total Energy

Answer

P.E. Energy

Answer

Angular Momentum

Question 14

14. The distance between two consecutive crests or trough is called

Answer

Wavelength

Answer

None of these

Question 15

15. The waves moving from a sitar to a listener in air are

Answer

Transverse stationary

Answer

Transverse progressive

Answer

Longitudinal stationary

Answer

Longitudinal progressive

Question 16

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

Answer

Independent of x

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

Remain unaffected

Answer

Become infinite

Question 18

18. 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

√k₁k₂

Question 19

19. The distance between any two consecutive crests or troughs is called

Answer

Phase difference

Answer

Wave length

Question 20

20. When two identical traveling waves are superimposed, the velocity of the resultant wave

Answer

Becomes zero

Answer

Remains unchanged

Question 21

21. When a body moves in a circle, its projection performs what type of motion?

Answer

Angular Motion

Answer

Circular Motion

Answer

Simple Harmonic Motion

Answer

Rectilinear Motion

Question 22

22. When the source of sound moves away form a stationary listener then _________ occurs.

Answer

No apparent change in frequency

Answer

An apparent decrease in frequency

Answer

An apparent increase in frequency

Answer

An apparent decrease in wavelength

Question 23

23. Reflection of radar waves from the aero planes is an example of

Answer

Doppler effect

Answer

Interference

Answer

Beat phenomenon

Question 24

24. Which one of the following statements is true for the speed v and the acceleration α of a particle executing simple harmonic motion?

Answer

When v is maximum, α is zero

Answer

When v is maximum, α is maximum

Answer

Value of α is zero, whatever may be the value of v

Answer

When v is zero, α is zero

Question 25

25. The waves that require a material medium for their propagation are called

Answer

Electromagnetic waves

Answer

Matter waves

Answer

Mechanical waves

Answer

Carrier waves

Question 26

26. A spring-mass system oscillates with a frequency v, if it is taken in an elevator slowly accelerating upward, the frequency will

Answer

Become zero

Answer

Remains same

Question 27

27. When a gas is heated at constant pressure, its volume is increased and its density

Answer

Increased rapidly

Answer

None of these

Question 28

28. Doppler-effect applies to

Answer

Light wave only

Answer

Sound wave only

Answer

Both sound and light waves

Answer

Neither sound nor light wave

Question 29

29. What sort of waves exhibit the Doppler effect?

Answer

Sound waves

Answer

All of these

Answer

Light waves

Answer

Water waves

Question 30

30. The response of the human ear to the loudness of sound is _________ in nature:

Answer

Logarithmic

Answer

Exponential

Answer

Hyperbolic

Question 31

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

Answer

Double the mass

Answer

Quadruple the mass

Answer

Half the mass

Answer

Reduce the mass to one fourth

Question 32

32. Speed of sound in Water at 20°C is:

Answer

1483 ms¯¹

Answer

1567 ms¯¹

Answer

1214 ms¯¹

Answer

1343 ms¯¹

Question 33

33. For motion of a simple pendulum to be simple harmonic

Answer

None of these

Answer

Amplitude of motion will be very large

Answer

Independent of amplitude of motion

Answer

Amplitude of motion will be every small

Question 34

34. The points at which the distance separated by λ, 2λ, 3λ, ........ are

Answer

Sometimes in phase

Answer

None of these

Answer

Out of phase

Question 35

35. With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are

Answer

Energy and linear momentum

Answer

Energy and mass

Answer

Energy, momentum and mass

Question 36

36. The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be

Question 37

37. If the period of oscillation of mass m suspended from a spring is one second, then the period of 4 m will be:

Question 38

38. Decibel is unit of

Answer

x-ray radiation capacity

Answer

Intensity of light

Answer

Energy of radiation

Answer

Sound loudness

Question 39

39. The distance between node and antinode is

Question 40

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

Answer

4π second

Answer

2π second

Question 41

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

Question 42

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

Answer

None of these

Answer

Oscillation

Question 43

43. Beats are the results of

Answer

Polarization

Answer

Diffraction of sound waves

Answer

Destructive interference

Answer

Constrictive and destructive interference

Question 44

44. A sound source is moving towards stationary listener with 1/10th of the speed of sound. The ratio of apparent to real frequency is

Question 45

45. Silence zone takes place due to

Answer

Destructive interference

Answer

Constructive interference

Question 46

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

Answer

A straight line

Answer

An ellipse

Answer

A hyperbola

Question 47

47. 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 48

48. The speed of sound in a medium depends on

Answer

Neither the elastic property nor the inertia property

Answer

The elastic property but not on the inertia property

Answer

The elastic property as well as the inertia property

Answer

The inertia property but not on the elastic property

Question 49

49. A body with frequency f would complete one vibration in

Answer

1/f seconds

Answer

1/T seconds

Question 50

50. When a stationary wave is formed then its frequency is

Answer

Twice that of the individual waves

Answer

Same as that of the individual waves

Answer

Half that of the individual waves

Answer

√2 that of the individual waves

Question 51

51. It is possible to distinguish between transverse and longitudinal waves form the property of

Answer

Refraction

Answer

Polarization

Answer

Diffraction

Answer

Interference

Question 52

52. The length of the second’s pendulum on the surface of Earth is 1m. Its length on the surface of moon, where g is 1/6th the value of g on the surface of Earth, is:

Question 53

53. The velocity of sound in air depends upon

Answer

Density and elasticity of gas

Answer

Wavelength of sound

Answer

Amplitude and frequency of sound

Question 54

54. If two waves of amplitude ‘A’ produce a resultant wave of amplitude A, then the phase difference between them will be

Question 55

55. A particle executes a simple harmonic motion of time period T. Find the time taken by the particle to go directly from its mean position to half the amplitude

Question 56

56. One wavelength is the distance covered in a time is called

Answer

Time period

Answer

Oscillation Time

Answer

Reverberation

Question 57

57. In stationary waves

Answer

Energy is minimum at nodes and maximum at antidotes

Answer

Alternating maximum and minimum energy producing at nodes and antinodes

Answer

Energy is uniformly distributed

Answer

Energy is minimum at nodes and maximum at antinodes

Question 58

58. In simple harmonic motion,

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 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 59

59. One spring has force constant 200 Nm¯¹, another has force constant 500 Nm¯¹. If they are joined in series, the force constant will be nearest to

Answer

100 Nm¯¹

Answer

700 Nm¯¹

Answer

300 Nm¯¹

Answer

143 Nm¯¹

Question 60

60. Waves transmit _________ from one place to another

Answer

None of these

Question 61

61. 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 62

62. ‘y’ is the ratio molar specific heat at constant pressure to the molar specific heat at constant volume and has value

Question 63

63. The length of a spring is ‘α’ when a force of 4N is applied on it. The length is β when 5N force is applied. Then the length of spring when 9N force is applied is

Answer

5α – 4β

Answer

5 β – 4 α

Answer

9 (β – α)

Question 64

64. When two waves with same frequency and constant phase difference interfere.

Answer

There is a gain of energy

Answer

There is a loss of energy

Answer

The energy is redistributed and the distribution changes with time

Answer

The energy is redistributed and the distribution remains constant with time

Answer 167

None of these

Answer 168

Smaller elastic modules

Answer 169

Zero elastic modulus

Answer 170

Large elastic modulus

Answer 171

Cannot be polarized

Answer 172

Do not affect photographic plate

Answer 173

Cannot be diffracted

Answer 174

Have a lower frequency

Answer 175

Temperature of air

Answer 176

The composition of air

Answer 177

Moisture contents in air

Answer 178

The atmospheric pressure

Answer 179

Wave mechanics

Answer 180

Increases or decreases depending on the material

Answer 181

Remains same

Answer 182

Beats phenomena

Answer 183

Interference of waves

Answer 184

Doppler effect

Answer 185

All of these

Answer 186

Reproduction of a CD from original copy

Answer 187

Reproduction of music

Answer 188

Reproduction of original image

Answer 189

Reproduction of original sound

Answer 190

Different frequencies and same phase

Answer 191

Different frequencies

Answer 192

Different frequencies, same amplitude and same phase

Answer 193

Different frequencies and same amplitude

Answer 194

√6 times slower

Answer 195

At correct rate

Answer 196

6 times faster

Answer 197

√6 times faster

Answer 198

Gamma rays

Answer 199

Ultra-violet rays

Answer 200

Infra-red radiation

Answer 201

Visible light

Answer 202

Longitudinal waves

Answer 203

Progressive wave

Answer 204

Transverse wave

Answer 205

None of these

Answer 206

The source is in motion

Answer 207

The detector is in motion

Answer 208

Both the above

Answer 209

None of these

Answer 210

Vibration harmonic oscillator

Answer 211

Frequency harmonic oscillator

Answer 212

Driven harmonic oscillator

Answer 213

3,000 to 6,000 Hz

Answer 214

2,000 to 4,000 Hz

Answer 215

4,000 to 8,000 Hz

Answer 216

5,000 to 11,000 Hz

Answer 217

Stationary waves

Answer 218

Longitudinal vibration

Answer 219

Transverse progressive waves

Answer 220

Electromagnetic waves

Answer 221

Intensity and velocity

Answer 222

Intensity and frequency

Answer 223

Frequency and velocity

Answer 224

Frequency and number of harmonic

Answer 225

Becomes one half

Answer 226

Remains same

Answer 227

Become one fourth

Answer 228

Becomes double

Answer 229

Becomes Zero

Answer 230

Remains constant

Answer 231

Interference

Answer 232

Reflection

Answer 233

Polarization

Answer 234

Refraction

Answer 235

Periodic waves

Answer 236

Progressive waves

Answer 237

Mechanical waves

Answer 238

None of these

Answer 239

Transverse

Answer 240

Longitudinal

Answer 241

Electromagnetic

Answer 242

Stationary

Answer 243

Zero in the mean position

Answer 244

Maximum in the extreme position

Answer 245

None of these

Total Questions:	94
Time Allowed:	40 Minutes
Total Marks:	94
How to Attempt Test:	Please choose the right Option in MCQ-type question.
Test Helpful For:	Physics Test ECAT Test MDCAT Test FPSC/PPSC/SPSC/KPPSC/BPSC/AJKPSC/NTS Physics Interview Question Answer

Physics Waves Online Mcqs Test

Important Waves Question and Answer

Physics Waves Practice Test Online With Explanation

Physics

How to Score High in Physics Waves Online Mcqs Test?

Key Preparation Tips:

More Related Resources

Malik Tahir

5 Comments

Leave a Reply Cancel reply

Important Waves Question and Answer

Physics Waves Practice Test Online With Explanation

Physics

How to Score High in Physics Waves Online Mcqs Test?

Key Preparation Tips:

More Related Resources

Latest Updates

Malik Tahir

5 Comments

Leave a Reply Cancel reply