Sound Test

Result

Sound Test - 21

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Weekly Quiz Competition

Question 1
1 / -0

What is known as strength of ear's perception of sound?

A
Loudness

B
Intensity

C
Frequency

D
Amplitude

Solution

Loudness is the strength of ear's perception of sound.
Question 2
1 / -0

The response of human ear to sound in terms of its shrillness is known as:

A
frequency

B
pitch

C
loudness

D
amplitude

Solution

The world shrillness is used to define the pitch of the sound. A high-pitched sound is called a shrill sound.
Pitch is the response of human ear to sound in terms of its shrillness.
Question 3
1 / -0

Which of the following causes noise pollution?

A
Loud Speakers

B
Radio at low volume

C
Low music

D
None of these

Solution

Excessive or unwanted sounds lead to noise pollution. Major causes of noise pollution are sounds of vehicles, explosions including bursting of crackers, machines, loudspeakers etc.
Question 4
1 / -0

Amplitude of wave is:

A
the distance wave moves in one second

B
distance wave moves in one time period of wave

C
maximum distance moved by medium particles on either side of mean position

D
distance equal to 1 wavelength

Solution

Amplitude is the maximum distance moved by medium particles on either side of mean position.
Question 5
1 / -0

Loudness of sound is measured in:

A
$angstorm$

B
$erg$

C
$newton$

D
$decibel\ (dB)$

Solution

Loudness of sound is measured in $decibel\ (dB)$ .
Question 6
1 / -0

Fill in the blanks:
1) Perceived fundamental frequency of sound is -------------.
2) Quality of sound is -------------.

A
1. Tone
2. Pitch

B
1. Pitch
2. Tone

C
1. Pitch
2. Loudness

D
1. Loudness
2. Tone

Solution

1) Pitch is defined as the perceived fundamental frequency of sound.
2) Tone is defined as the quality of sound.
Question 7
1 / -0

Which of the following is / are effective for preventing noise pollution?

A
Construction of sound proof rooms for noisy machinery in industries

B
Ban on use of horns with jarring sound

C
Vegetation along roads in residential areas

D
All of the Above

Solution

Some effective steps to reduce sound pollution are following:
$\bullet$ Construction of soundproof rooms for noisy machinery in industries
$\bullet$ Ban on use of horns with jarring sound
$\bullet$ Vegetation along roads in residential areas
Question 8
1 / -0

What health problems can be caused due to noise pollution?

A
High Blood Pressure, Anxiety, Stress

B
Only Anxiety

C
Only Stress

D
None

Solution

Noise pollution can cause high blood pressure, hearing impairment, stress, anxiety etc.
Question 9
1 / -0

What all are the sources of noise pollution?

A
Household sources like mixers, grinders, vacuum cleaners etc.

B
Social events with loud speakers

C
Transportation noises, traffic jams

D
All of the above

Solution

The presence of excessive or unwanted sounds in the environment is called noise pollution. Major causes of noise pollution are sounds of vehicles, explosions including bursting of crackers, machines, loudspeakers, television, and transistor radio at high volumes, some kitchen appliances, etc.
Question 10
1 / -0

According to WHO (World Health Organisation), what is the loudness limit of sound in industries?

A
$50\ dB$

B
$75\ dB$

C
$100\ dB$

D
$80\ dB$

Solution

The decibel scale is used to indicate levels of sound , that is , loudness or intensity of sound.
According to WHO. In industrial areas, the permissible limit is $75$ $dB$ for daytime and $70$ $dB$ at night to prevent noise pollution.

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Re-Attempt Weekly Quiz Competition

Sound Test - 21

Result

Sound Test - 21

Score

-

Rank

-

SHARING IS CARING

Question 1

Loudness

Intensity

Frequency

Amplitude

Solution

Question 2

frequency

pitch

loudness

amplitude

Solution

Question 3

Loud Speakers

Radio at low volume

Low music

None of these

Solution

Question 4

the distance wave moves in one second

distance wave moves in one time period of wave

maximum distance moved by medium particles on either side of mean position

distance equal to 1 wavelength

Solution

Question 5

angstormangstormangstorm

ergergerg

newtonnewtonnewton

decibel (dB)decibel\ (dB)decibel (dB)

Solution

Question 6

1. Tone2. Pitch

1. Pitch2. Tone

1. Pitch2. Loudness

1. Loudness2. Tone

Solution

Question 7

Construction of sound proof rooms for noisy machinery in industries

Ban on use of horns with jarring sound

Vegetation along roads in residential areas

All of the Above

Solution

Question 8

High Blood Pressure, Anxiety, Stress

Only Anxiety

Only Stress

None

Solution

Question 9

Household sources like mixers, grinders, vacuum cleaners etc.

Social events with loud speakers

Transportation noises, traffic jams

All of the above

Solution

Question 10

50 dB50\ dB50 dB

75 dB75\ dB75 dB

100 dB100\ dB100 dB

80 dB80\ dB80 dB

Solution

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$angstorm$

$erg$

$newton$

$decibel\ (dB)$

1. Tone
2. Pitch

1. Pitch
2. Tone

1. Pitch
2. Loudness

1. Loudness
2. Tone

$50\ dB$

$75\ dB$

$100\ dB$

$80\ dB$