Sound Test

Result

Sound Test - 47

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Weekly Quiz Competition

Question 1
1 / -0

If one of the prongs of a tuning fork gets broken, the vibrations

A
are maintained equally well

B
are maintained better

C
cannot be maintained

D
nothing can be decided

Solution

Without the second arm, the vibration would be less pure, and would fade out more quickly. so they cannot be maintained .
so the answer is C.
Question 2
1 / -0

How does a bat finds his food?

A
High pitched sounds produced by the bat bounce off the food and then come back to the bat

B
Bat finds the food with the help of eyes

C
Smell of the food helps the bat to locate is

D
All of these

E
None of these

Solution

Bat can't see in the dark hence, he locates food by producing high pitched sound that bounce off the food and then comes back to the bat. Therefore, option (A) is correct and rest of the options is incorrect.
Question 3
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 4
1 / -0

The sound heard after reflection from an obstacle is called

A
noise

B
echo

C
musical sound

D
none of these

Solution

We hear two types of sounds, One which directly comes from sources and other which comes after reflection from some rigid surfaces which is knowns as echo.
Question 5
1 / -0

SONAR is based on the principle of

A
echo

B
resonance

C
reverberation

D
anyone of the above

Solution

SONAR stands for Sound Navigation and Ranging and it is used to find the depth of sea and ocean. SONAR is based on the principle of echo.
In SONAR, a sound signal is sent downwards into the sea. The sound gets reflected at the bottom of the sea and thus the reflected sound is detected as an echo and the time taken by it to come back is recorded. Since we know the speed of sound in water, we can calculate the depth of the sea, or by the technique, we can detect anything underwater.
Question 6
1 / -0

The ______ or ______ of a sound is that characteristic by virtue of which we can distinguish between two sounds of the same pitch and same loudness produced by two different instruments.

A
quality, timbre

B
loudness, pitch

C
frequency, pitch

D
loudness, amplitude

Solution

Quality or timbre is the characteristics of musical sound which enables us to distinguish between the sounds of the same pitch and loudness produced by different musical instruments or different persons.
Question 7
1 / -0

The repetition of reflected sound from a distant object is called ______ .

A
echo

B
transformation

C
eddy currents

D
string
Question 8
1 / -0

A tuning fork have two _____ and one ___ respectively.

A
Prong, Stem

B
String, Prong

C
Stem, Prong

D
Prong, String

Solution

A tuning fork is an acoustic resonator in the form of a two-pronged fork with prongs formed from a U-shaped bar of elastic metal and a stem. It resonates at a specific constant pitch when set vibrating by striking it against a surface or with an object, and emits a pure musical tone once the high overtones fade out. The pitch that a particular tuning fork generates depends on the length and mass of the two prongs. Two prongs are provided in order to get a balance motion to the tuning fork.
Question 9
1 / -0

A simple instrument used to produce pure sound of fixed frequency is-

A
A tuning fork

B
Fire tongs

C
Simple pendulum

D
Metre scale

Solution

A tuning fork is the instrument used to produce sound of a certain fixed frequency. A tuning fork is a sound resonator which is a two-pronged fork.
Question 10
1 / -0

Pitch increases with the increase in ________ of a vibrating body.

A
frequency

B
amplitude

C
loudness

D
length

Solution

The pitch depends on how often a particle vibrates when a wave passes through, otherwise known as the frequency of the wave. So if the frequency increases then the pitch of the sound wave also increases.

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Re-Attempt Weekly Quiz Competition

Sound Test - 47

Result

Sound Test - 47

Score

-

Rank

-

SHARING IS CARING

Question 1

are maintained equally well

are maintained better

cannot be maintained

nothing can be decided

Solution

Question 2

High pitched sounds produced by the bat bounce off the food and then come back to the bat

Bat finds the food with the help of eyes

Smell of the food helps the bat to locate is

All of these

None of these

Solution

Question 3

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 4

noise

echo

musical sound

none of these

Solution

Question 5

echo

resonance

reverberation

anyone of the above

Solution

Question 6

quality, timbre

loudness, pitch

frequency, pitch

loudness, amplitude

Solution

Question 7

echo

transformation

eddy currents

string

Question 8

Prong, Stem

String, Prong

Stem, Prong

Prong, String

Solution

Question 9

A tuning fork

Fire tongs

Simple pendulum

Metre scale

Solution

Question 10

frequency

amplitude

loudness

length

Solution

User

Question Analysis

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Score

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