Sound Test

Result

Sound Test - 34

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 vibrating body while playing a violin is

A
Air

B
The box

C
Both wire and box

D
Air, wire and the box

Solution

The sound of a violin is the result of interactions between its many parts. Drawing a bow across the strings causes the strings to vibrate. This vibration is transmitted through the bridge and sound post to the body of the violin, which allows the sound to effectively radiate into the surrounding air. So the vibrating body while playing a violin is both wire and box.
Question 2
1 / -0

The time period of a vibrating body is $$0.01\;sec$$. Its frequency will be :

A
$$1.0\;s^{-1}$$

B
$$10.0\;s^{-1}$$

C
$$100.0\;s^{-1}$$

D
$$1000.0\;s^{-1}$$

Solution

Given,
Time period $$=0.01\,sec$$
We have to find the frequency.
We have the relation, $$Frequency=\dfrac{1}{Time\,Period}$$
$$\therefore Frequency=\dfrac{1}{0.01}=100\,s^{-1}$$
Question 3
1 / -0

The loudness of sound is normally between -

A
10 dB - 25 dB

B
50 dB - 60 dB

C
90 dB - 105 dB

D
120 dB - 130 dB

Solution

In acoustics, loudness is the subjective perception of sound pressure. Decibel (dB) is the unit of loudness of sound. The normal range of loudness of sound is in between 50 dB and 60 dB.
Question 4
1 / -0

A normal man is unable to hear the sound emitted by source. Out of the possible reasons, the one which is not applicable is

A
The pitch of the sound may be too high

B
The pitch of the sound may be too low

C
The quality of the sound is not matching with the man's requirement

D
The amplitude of sound may be too small

Solution
Question 5
1 / -0

Directions For Questions

Consider the following statements:
Statement 1: A fire engine produces noise pollution.
Statement 2: Leaves falling off a trees produces noise pollution.

...view full instructions

Which one of the following is correct about the above statements?

A
Statement 1 is true and 2 is false

B
Statement 1 is false and 2 is true

C
Both 1 and 2 are false

D
Both a and 2 are true

E
None of these

Solution

Falling of leaves from the trees produces sound of very low decibel that doesn't come under pollution. Therefore, option (A) is correct and rest of the options is incorrect.
Question 6
1 / -0

Arwin is playing violin and his sister Tina is listening music from the loudspeaker. Which one of the two children is creating more noise pollution as compare to other?

A
Arwin

B
Tina

C
Both Arwin and Tina

D
Neither Arwin nor Tina

E
None of these

Solution

Sound of violin is pleasant but sound of a loudspeaker is always noise because it is at high volume. Therefore, option (B) is correct and rest of the options is incorrect.
Question 7
1 / -0

Every source of sound has to be a ________ body.

A
vibrating

B
resting

C
climbing

D
elastic

Solution

Every source of sound has to be a vibrating body. When a body vibrates, it forces the neighbouring particle of the medium to vibrate. This creates a disturbance in the medium, which travels in the form of waves. This disturbance, when reaches the ear, produces sound.
Question 8
1 / -0

Imagine a cannon being fired on the surface of the moon. Then

A
the sound will be heard at the surface of the earth during all seasons

B
the sound will not be heard at the surface of the earth

C
the sound will be heard at the surface of the earth during the rainy season

D
no sound will be heard on the earth or on the moon

Solution

Sound waves need a material medium to propagate. Since there is no atmosphere on the moon, so sound cannot propagate in space and hence no sound will be heard at the surface of the earth as well as on the moon.
Question 9
1 / -0

Which of the following statements is incorrect?

A
Sound needs medium to travel

B
Sound can travel through vaccum

C
Sound can't travel through vaccum

D
Both A and B

E
None of these

Solution

Sound needs a medium to travel so that the molecules of medium can transfer sound vibrations.Sound can't travel through vacuum as there are no molecules or matter in vaccum. Therefore, option (B) is incorrect.
Question 10
1 / -0

Which of the following will produce sound through vibration?

A
a plastic scale when bent over the edge of a bench

B
saying "Ah" for few seconds

C
plucking a rubber string by fingers

D
all

Solution

We know that sound is produced whenever there is any vibration.
All vibration produces sound. In some cases vibrations are visible to our naked eyes but in some cases they can only be felt not seen.
In all the above activities , there is some kind of vibration involved. So sound can be produced.
For example.
Plastic scale when bent and left again vibrates rapidly and saying 'Ah' from mouth involves vibration of vocal cord.And plucking a rubber string vibrates the string rapidly.So all these cases produce sound.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Sound Test - 34

Result

Sound Test - 34

Score

-

Rank

-

SHARING IS CARING

Question 1

Air

The box

Both wire and box

Air, wire and the box

Solution

Question 2

$$1.0\;s^{-1}$$

$$10.0\;s^{-1}$$

$$100.0\;s^{-1}$$

$$1000.0\;s^{-1}$$

Solution

Question 3

10 dB - 25 dB

50 dB - 60 dB

90 dB - 105 dB

120 dB - 130 dB

Solution

Question 4

The pitch of the sound may be too high

The pitch of the sound may be too low

The quality of the sound is not matching with the man's requirement

The amplitude of sound may be too small

Solution

Question 5

Statement 1 is true and 2 is false

Statement 1 is false and 2 is true

Both 1 and 2 are false

Both a and 2 are true

None of these

Solution

Question 6

Arwin

Tina

Both Arwin and Tina

Neither Arwin nor Tina

None of these

Solution

Question 7

vibrating

resting

climbing

elastic

Solution

Question 8

the sound will be heard at the surface of the earth during all seasons

the sound will not be heard at the surface of the earth

the sound will be heard at the surface of the earth during the rainy season

no sound will be heard on the earth or on the moon

Solution

Question 9

Sound needs medium to travel

Sound can travel through vaccum

Sound can't travel through vaccum

Both A and B

None of these

Solution

Question 10

a plastic scale when bent over the edge of a bench

saying "Ah" for few seconds

plucking a rubber string by fingers

all

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.