Sound Test

Result

Sound Test - 26

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

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 2
1 / -0

Which one has higher frequency?

A
Infrasonic sound

B
Ultrasonic sound

C
Audible sound

D
All of the above have same frequency

Solution

Audible sound has a frequency range of $$20 Hz$$ to $$20 \ kHz.$$
Infrasonic frequency is below audible range, i.e. below $$20 Hz$$.
Ultrasonic frequency is above audible range, i.e. above $$20KHz$$.
So the answer is B.
Question 3
1 / -0

The energy of a wave depends on

A
Amplitude of the wave

B
Phase of the wave

C
Timbre of the wave

D
Shape of the wave

Solution

The energy of a wave is directly proportional to amplitude square and hence it increases with the increase in the amplitude of the wave.
A wave with greater amplitude will release more energy when it falls back to sea level than a wave of lesser amplitude.
Question 4
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 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

Answer the question:
A quiet sound is produced by a loudspeaker. The loudness of the sound is increased.
Which property of the sound wave is increased ?

A
amplitude

B
frequency

C
speed

D
wavelength

Solution

Loudness depends on Amplitude of sound wave.
so if loudness increases, that means amplitude of sound wave is increased.

Hence option A is correct.
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

In a meeting hall which is initially half-filled with participants, and after some time becomes full in capacity, then the clarity of speech

A
increases

B
decreases

C
remain Same

D
becomes zero

Solution

Clarity of speech increases as the number of people in the hall is increased. Because of more people, the sound gets absorbed more, due to which reverberation time decreases and thus clarity of speech increases.
Question 10
1 / -0

Which of the following does not effect the reverberation time

A
size of the auditorium

B
frequency of sound

C
nature of the walls

D
area of the walls, ceiling and floor

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Sound Test - 26

Result

Sound Test - 26

Score

-

Rank

-

SHARING IS CARING

Question 1

10 sec

1 sec

0.1 sec

0.01 sec

Solution

Question 2

Infrasonic sound

Ultrasonic sound

Audible sound

All of the above have same frequency

Solution

Question 3

Amplitude of the wave

Phase of the wave

Timbre of the wave

Shape of the wave

Solution

Question 4

Frequency

Time period

Amplitude

None of these

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

amplitude

frequency

speed

wavelength

Solution

Question 8

30 Hz

300 Hz

3000 Hz

30,000 Hz

Solution

Question 9

increases

decreases

remain Same

becomes zero

Solution

Question 10

size of the auditorium

frequency of sound

nature of the walls

area of the walls, ceiling and floor

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.