Sound Test

Result

Sound Test - 19

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

The frequency of a wave traveling at a speed of $$500 m/s$$ is $$25 Hz$$. Its time period will be :

A
$$20 s$$

B
$$0.05 s$$

C
$$25 s$$

D
$$0.04 s$$

Solution

Given,
Speed of wave $$v=500\ m/s$$
frequency of a wave $$f=25\ Hz$$
Time period is the reciprocal of the frequency, and is given by,
$$T=\dfrac{1}{f}=\dfrac{1}{25}=0.04s$$
Question 2
1 / -0

Which of the following is not a characteristic of a musical sound?

A
Pitch

B
Wavelength

C
Quality

D
Loudness

Solution

Wavelength is not a characteristic of musical sound. Pitch, Quality and Loudness are all characteristics of a musical sound.
Question 3
1 / -0

Which of the following is not caused due to noise pollution?

A
Lack of sleep

B
Hypertension

C
Diabetes

D
Anxiety

Solution

Diabetes is not caused by noise pollution, as diabetes is caused due to lack of insulin in the human body.
Question 4
1 / -0

Presence of excessive unwanted sounds in the environment is called

A
air pollution

B
noise pollution

C
water pollution

D
all of these

Solution

Pollution is that , which harms our environment or health of animals on earth , excessive unwanted sounds are harmful to ear , therefore it is called noise pollution .
Question 5
1 / -0

The waveform of noise sound is

A
Irregular

B
Sudden

C
Periodic

D
Both A and B

Solution

Music is a pleasant sound, whereas noise is unpleasant to hear. The waveform of musical sound is periodic and regular whereas the waveform of noise is irregular and sudden.
The frequencies that make up a musical sound are in the ratio of small whole numbers whereas this is not the case for noise.
Question 6
1 / -0

How many vocal cords does a person have?

A
$$3$$

B
$$1$$

C
$$2$$

D
$$5$$

Solution

There are 2 vocal cords, which produce sound in humans. There are, in fact, 2 other cords but they do not contribute in producing voice. Those are silent vocal cords.
Question 7
1 / -0

The characteristics of musical sound are

A
Intensity

B
Frequency

C
Quality

D
All

Solution

The characteristics of musical sound are:
(i) loudness (intensity)
(ii) pitch (frequency)
(iii) quality (overall effect of all the harmonics present in the sound).
Question 8
1 / -0

What is the average adult female speaking voice range?

A
$$125Hz$$

B
$$210Hz$$

C
$$300Hz$$

D
$$400Hz$$

Solution

Average female speaking voice range is $$210Hz$$
Average male speaking voice range is $$125Hz$$
Average child speaking voice range is $$ 300Hz$$
Question 9
1 / -0

Noise pollution is caused by

A
sound above $$65 \ dB$$ loudness

B
sound below $$65 \ dB$$ loudness

C
any sound

D
sound above $$20000 \ Hz$$ frequency

Solution

Sound with loudness more than $$65 \ dB$$ causes noise pollution.
Question 10
1 / -0

Highest loudness of sound causing no harm to the ear is

A
20 dB

B
25 dB

C
75 dB

D
10 dB

Solution

Sound is measured in decibels (dB). A whisper is about 30 dB, normal conversation is about 60 dB, and a motorcycle engine running is about 95 dB. Noise above 70 dB over a prolonged period of time may start to damage our hearing. Loud noise above 120 dB can cause immediate harm to our ears.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Sound Test - 19

Result

Sound Test - 19

Score

-

Rank

-

SHARING IS CARING

Question 1

$$20 s$$

$$0.05 s$$

$$25 s$$

$$0.04 s$$

Solution

Question 2

Pitch

Wavelength

Quality

Loudness

Solution

Question 3

Lack of sleep

Hypertension

Diabetes

Anxiety

Solution

Question 4

air pollution

noise pollution

water pollution

all of these

Solution

Question 5

Irregular

Sudden

Periodic

Both A and B

Solution

Question 6

$$3$$

$$1$$

$$2$$

$$5$$

Solution

Question 7

Intensity

Frequency

Quality

All

Solution

Question 8

$$125Hz$$

$$210Hz$$

$$300Hz$$

$$400Hz$$

Solution

Question 9

sound above $$65 \ dB$$ loudness

sound below $$65 \ dB$$ loudness

any sound

sound above $$20000 \ Hz$$ frequency

Solution

Question 10

20 dB

25 dB

75 dB

10 dB

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.