SOUNDDD

Posted on By admin

Sound

1 / 111

The propagation (transmission) of an electromagnetic wave is:

2 / 111

Which of the following is the wavelength of infrared radiation?

3 / 111

What type of wave is an electromagnetic wave?

4 / 111

Which electromagnetic wave has the shortest wavelength?

5 / 111

Electromagnetic waves are produced by —

 

6 / 111

The ratio of the velocity of an object to the velocity of sound in the same medium and under the same conditions is called —

7 / 111

Mach numbers are used in relation to the speed of —

 

8 / 111

Sound or sound pollution is measured in —

9 / 111

What is the intensity of sound during normal conversation?

10 / 111

What is the characteristic of sound that differentiates a female voice from a male voice?

11 / 111

Due to which characteristic of sound does a sound appear "grave" (deep) or "shrill" (high-pitched)?

12 / 111

Compared to men, women's voices are more shrill (high-pitched). This is because women's voices have —

13 / 111

Why does a young child's voice sound more pleasant compared to a man's voice?

14 / 111

Women’s voices are shriller (thinner/higher-pitched) compared to men’s because—

15 / 111

If the same note is played on a sitar and a flute, the difference in the sound produced can be distinguished due to—

 

16 / 111

Which one of the following is not produced by sound waves in air?

17 / 111

What is the maximum limit of sound intensity in decibels (dB) beyond which a person cannot hear?

18 / 111

Which of the following causes the most sound (noise) pollution?

19 / 111

The sound of a whistle of an approaching train appears to increase, while for a receding train it appears to decrease.This phenomenon is an example of:

20 / 111

Statement (A): A bat flies at night without hitting any object.
Statement (R): Bats emit infrasonic waves.

What is correct?

21 / 111

The speed of sound in air is 332 meters per second. If the pressure is doubled, what will be the new speed of sound?

22 / 111

In which of the following substances does sound travel the fastest?

 

23 / 111

We hear the thunder of clouds some time after seeing the lightning. What is the reason for this?

 

24 / 111

What is the approximate speed of sound in air?

 

25 / 111

In which medium does sound travel the fastest?

26 / 111

"Speed of sound in different media:"

 

27 / 111

At approximately 20°C, in which medium will the speed of sound be the highest?

 

28 / 111

Which one of the following statements is NOT correct?

29 / 111

The speed of sound in air –

 

30 / 111

Statement (A):The steam from a train engine is seen first, and the whistle is heard later.

Statement (R):The speed of sound waves is much less compared to the speed of light waves.

Options:

31 / 111

Supersonic planes fly—

 

32 / 111

Bats can fly in the dark because—

 

33 / 111

On the Moon, a distant explosion cannot be heard from the surface because—

 

34 / 111

The relationship between wave velocity (v), frequency (n), and wavelength (λ) is given by —

35 / 111

The sound with frequency between 20 Hz and 20,000 Hz is which of the following?

 

36 / 111

Which of the following is used for cleaning the interior parts of airplanes?

 

37 / 111

The pitch of sound depends on:

 

38 / 111

Which of the following is used to repel insects and harmful pests from homes?

 

39 / 111

For detecting prey, predators, or obstacles, what phenomenon do bats or dolphins use?

 

40 / 111

Who first produced ultrasonic waves by blowing a whistle?

 

41 / 111

Ultrasonic waves can be—

 

42 / 111

Ultrasonic waves are those sound waves whose frequency is—

43 / 111

What is the frequency of infrasonic waves?

 

44 / 111

Which of the following statements is true for sound waves?

45 / 111

What is the nature of sound waves?

 

46 / 111

An astronaut cannot hear his companion on the surface of the Moon because:

 

47 / 111

Which of the following phenomena does not occur in both light and sound?

48 / 111

While shouting, a person always keeps their palm near their mouth, because—

 

49 / 111

Decibel is used to measure which of the following?

 

50 / 111

What is the cause of an echo?

 

51 / 111

For a clear echo to be heard, what should be the minimum distance between the reflecting surface and the sound source?

 

52 / 111

The working principle of RADAR is based on which of the following?

53 / 111

To hear an echo, what should be the minimum time interval between the original sound and its echo?

 

54 / 111

The walls, ceiling, and floor of a good auditorium are covered with fibrous material, carpet, glass fiber, etc. The purpose of this is—

55 / 111

For how long does the effect of sound remain in the human ear?

 

56 / 111

Due to which phenomenon do sound waves produce echoes?

 

57 / 111

At what minimum distance should a person stand from the reflecting surface to hear an echo?

 

58 / 111

On which principle of sound does a stethoscope work?

 

59 / 111

Echo (प्रतिध्वनि) is produced due to:

 

60 / 111

SONAR is mostly used by:

 

61 / 111

Who proposed the relationship between reverberation time and the volume of a hall?

 

62 / 111

What is the reverberation time of a dead hall (anechoic chamber)?

 

63 / 111

When the army crosses a bridge, soldiers are instructed not to march in step. Why?

 

64 / 111

We rotate the knob of a radio to listen to programs from different stations. This is possible due to:

 

65 / 111

It is said that when Tansen used to sing, the glass panes of windows or glass tumblers would shatter into pieces.If this were possible, which property of sound would be responsible for it?

 

66 / 111

When we place a pitcher underwater to fill it, we hear a special kind of sound as it fills up. What is the reason for this?

67 / 111

Tuning a radio to a station is an example of –

 

68 / 111

"When two loudspeakers play together at a place, a listener sitting at a particular spot is unable to hear the sound. What is the reason for this?"

Options:

69 / 111

"In the sea, tall lighthouses are built at various places, from where large sirens are sounded to signal ships. Sometimes ships enter a 'silent zone' where the sound of the siren is not heard. These silent zones are created due to which property of sound waves?"

Options:

70 / 111

"When we are sitting inside a room, even though we may not see the people talking in the adjacent room, we can still hear their voices. This is due to the—"

Options:

71 / 111

The fluctuation in the frequency of a sound source is called—

Options:

72 / 111

Doppler Effect is related to –

73 / 111

The frequency or pitch of the whistle of an approaching train appears to increase. This happens due to which phenomenon?

 

74 / 111

The speed of sound in humid air is greater than in dry air, because in humid air—

 

75 / 111

Which of the following statements is correct? The speed of sound—

 

76 / 111

Which one of the following is not correct?

 

77 / 111

Which one of the following types of waves is used in night vision devices?

78 / 111

In which of the following is the speed of sound the highest?

79 / 111

A jet airplane is flying in air at a speed of 2 Mach. If the speed of sound is 332 m/s, then what is the speed of the airplane?

 

80 / 111

At a temperature of around 20°C, in which medium is the speed of sound maximum?

 

81 / 111

Which biological method uses ultrasonic sound?

82 / 111

Which waves cannot propagate in vacuum?

83 / 111

If the speed of sound in air, water, and steel is respectively Va, Vw, and Vs, then:

 

84 / 111

Sound waves cannot travel through—

 

85 / 111

What is the device called that is used to detect and trace sound waves?

86 / 111

Supersonic airplanes produce a shock wave called—

 

87 / 111

25.Echo sounding is used for—

 

88 / 111

24.Acoustics is the science related to—

89 / 111

23.The standard sound level for humans is—

90 / 111

22.The device used to detect submerged objects is called—

 

91 / 111

21. When a person hears thunder, they open their mouth so that—

92 / 111

20. Which of the following properties of sound is affected by a change in air temperature?

 

93 / 111

19. The sound intensity of a musical instrument is measured in—

 

94 / 111

18. The use of multiple reflection of sound is made in which of the following?

95 / 111

17. Where can a longitudinal wave be produced?

96 / 111

16. The maximum displacement of vibrating particles from their mean position in a medium is called—

 

97 / 111

15. The distance between two consecutive crests or troughs is—

 

98 / 111

14. The distance between two successive compressions or two successive rarefactions is—

99 / 111

13. The motion of a transverse wave is—

 

100 / 111

12. A longitudinal wave is formed by—

 

101 / 111

1. By how much does the speed of sound increase when the temperature increases by 1°C?

102 / 111

2.A progressive wave differs from a stationary (or standing) wave in—

 

103 / 111

3.The intensity of a sound wave in air is—

 

104 / 111

4. A major similarity between sound waves and light waves is—

 

105 / 111

5. When a sound wave propagates, what is actually transmitted?

 

106 / 111

6. The ratio of the speed of sound in air at 4 atmospheric pressure and 1 atmospheric pressure will be—

107 / 111

7. The product of frequency and time period is—

108 / 111

8. The sound energy passing through a unit area in one second is called—

 

109 / 111

9. In a stethoscope, the sound of the heartbeat travels through the tube—

 

110 / 111

11 Sound is—

 

111 / 111

10 The part of the human ear that is filled with fluid is—

 

Your score is

The average score is 73%

0%

Uncategorized

Related Posts