Sound Test

Result

Sound Test - 23

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

Noise is produced by

A
Vibration with high frequency

B
Regular vibration

C
Regular and periodic vibration

D
Irregular and non-periodic vibration

Solution

Smooth and periodic vibration is music and irregular and non-periodic vibration is noise.
Question 2
1 / -0

A particle vibrates 10 times in 1 sec. What is the time period of vibration of the particle?

A
10 sec

B
1 sec

C
0.1 sec

D
0.01 sec

Solution

Time period of vibration is the time taken for 1 vibration.

Given:
10 vibrations are completed in $$1 \ sec.$$
So,
1 vibration will taken only: $$\dfrac{1}{10}=0.1 \ sec$$

The correct option is (C).
Question 3
1 / -0

Which of the following is the vibrating part of Banjo?

A
Stretched- Membrane

B
Stretched- String

C
Air column

D
None of the above

Solution

A Banjo is a string instrument. It gives a musical sound when plucked properly. The vibration of the string produces that sound.
Question 4
1 / -0

When the pitch of note produced by a harmonium is lowered, then the wavelength of the note:

A
decreases

B
first decreases and then increases

C
increases

D
remains the same

Solution

The shorter the wavelength, the higher the frequency, and the higher the pitch, of the sound.
Hence, pitch of harmonium is lowered so frequency will be lowered thus,
wavelength will be increased.
Question 5
1 / -0

What is the approximate range of audible sound frequencies for a human with good hearing?

A
From $$20Hz$$ to $$2000Hz$$

B
From $$20Hz$$ to $$20000Hz$$

C
From $$200Hz$$ to $$20000Hz$$

D
From $$200Hz$$ to $$200000Hz$$

Solution

Adult humans can hear from $$20Hz$$ to $$20000Hz$$ of frequency. Sound with frequency lower than $$20Hz$$ are called infrasonic, and higher than $$20000Hz$$ are called ultrasonic or supersonic which are inaudible to humans.
Question 6
1 / -0

Which of the following statement best describes frequency?

A
the maximum disturbance caused by a wave

B
the number of complete vibrations per second

C
the distance between one crest of a wave and the next one

D
the distance travelled by a wave per second

Solution

the number of complete vibrations per second
Question 7
1 / -0

Time taken to complete one vibration is called

A
Frequency

B
Time period

C
Amplitude

D
None of these

Solution

Time taken to complete one vibration is called is called time period (T).
Question 8
1 / -0

Sound corresponding to which frequency is ultrasonic sound?

A
30 Hz

B
300 Hz

C
3000 Hz

D
30,000 Hz

Solution

30,000 Hz
Sound having a frequency of more than 20000 Hz in known as ultrasonic. It can not heard by us.
Question 9
1 / -0

A key of a mechanical piano struck gently and then struck again but much harder this time. In the second case

A
sound will be louder but pitch will not be different

B
sound will be louder and pitch will also be higher

C
sound will be louder but pitch will be lower

D
both loudness and pitch will remain unaffected

Solution

Any sound wave pitch depends on the frequency of the wave. When the mechanical piano is struck harder the second time, we find sound will be louder but pitch remains the same because the frequency has not changed. The pitch depends on frequency of the particular key which is being hit and hence there would be no change in pitch of sound. Loudness depends on amplitude which will be more if key is struck harder.
Question 10
1 / -0

1 hertz is equal to

A
1 vibration per minute

B
10 vibrations per minute

C
60 vibrations per minute

D
600 vibrations per minute

Solution

Hertz is the unit of frequency.
$$1\ Hz = 1\ vibration\ per\ sec = 60\ vibrations\ per\ minute$$

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Sound Test - 23

Result

Sound Test - 23

Score

-

Rank

-

SHARING IS CARING

Question 1

Vibration with high frequency

Regular vibration

Regular and periodic vibration

Irregular and non-periodic vibration

Solution

Question 2

10 sec

1 sec

0.1 sec

0.01 sec

Solution

Question 3

Stretched- Membrane

Stretched- String

Air column

None of the above

Solution

Question 4

decreases

first decreases and then increases

increases

remains the same

Solution

Question 5

From $$20Hz$$ to $$2000Hz$$

From $$20Hz$$ to $$20000Hz$$

From $$200Hz$$ to $$20000Hz$$

From $$200Hz$$ to $$200000Hz$$

Solution

Question 6

the maximum disturbance caused by a wave

the number of complete vibrations per second

the distance between one crest of a wave and the next one

the distance travelled by a wave per second

Solution

Question 7

Frequency

Time period

Amplitude

None of these

Solution

Question 8

30 Hz

300 Hz

3000 Hz

30,000 Hz

Solution

Question 9

sound will be louder but pitch will not be different

sound will be louder and pitch will also be higher

sound will be louder but pitch will be lower

both loudness and pitch will remain unaffected

Solution

Question 10

1 vibration per minute

10 vibrations per minute

60 vibrations per minute

600 vibrations per minute

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.