Sound Test

Result

Sound Test - 16

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

Which of the following instruments produces sounds by the vibrations of the air column in them?

A
Jaltarang

B
Flute

C
Harmonium

D
Both (B) and (C)

Solution

The Jal Tarang is a melodic percussion instrument that originates from the Indian subcontinent. It consists of a set of ceramic or metal bowls filled with water. The bowls are played by striking the edge with beaters, one in each hand.
Question 2
1 / -0

The true statement is

A
Sound waves in air are transverse waves

B
Sound wave does not required a material medium for its propagation

C
Sound travels faster in gas than in solid

D
Sound travels faster in solid than in gas

Solution

When the density of the medium increases speed of sound also increases. Solid has more density than gas so sound travels faster in solid than in gas.
Molecules in solids are closer than that in gas.
$$\therefore $$ Oscillations in solids are more.
$$\therefore $$ Sound travels faster in solids than in gas
Question 3
1 / -0

It is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice:

A
Has a definite pitch

B
Has a definite quality

C
Has a definite loudness

D
Can penetrate the wall

Solution

The quality or timbre of a sound wave is determined by its waveform. The waveforms produced by different persons are different. Even if the pitch and loudness of two waves produced by two different persons are the same, their quality will be different.
Question 4
1 / -0

Reverberation of sound is due to

A
multiple refractions

B
multiple reflections

C
multiple diffractions

D
multiple polarization

Solution

Reverberation is the phenomenon of persistence of sound after it is stopped by surfaces such as furniture, people, walls, etc. within a closed space, causing multiple reflections. These reflections build up with each reflection and persist for a finite time and then decay gradually as they are slowly absorbed by the objects in the space enclosed.
Question 5
1 / -0

Which of the following graphs, represents higher pitch of sound?

A

B

C

D

Solution

The pitch of sound is related to the frequency of sound. Higher frequency represents high sound whereas lower frequency represents lower Pitch.
The graph given in Option C having higher frequency hence, Sound produced by it will have higher pitch.
Option C
Question 6
1 / -0

Upholstered seats in cinema halls are arranged for

A
absorption of sound

B
reflection of sound

C
diffraction of sound

D
to hear an echo

Solution

Upholstered seats in cinema halls are arranged for better absorption of sound and to decrease the reverberation time.
In an auditorium or big hall excessive reverberation is highly undesirable. To reduce reverberation, the seat materials are selected on the basis of their sound absorbing properties.
Question 7
1 / -0

A sharp sound becomes a musical note in an auditorium then, it is called

A
echo

B
Echelon effect

C
reverberation

D
shrillness

Solution

If there is regular structure similar to a flight of stairs or asset of railways in the hall, the sound produced in front of such a structure may produce a musical note due to regular successive echoes of sound reaching the observer. Such an effect is called echelon effect. If the frequency of this note is within the audible range, the listeners will hear only this note prominently.
Question 8
1 / -0

For good absorption of sound in auditorium, it requires

A
a few windows to be opened

B
all closed windows

C
maps hanging from walls

D
hanging curtains.
Question 9
1 / -0

Frequency ($$\nu$$) and time period $$(T)$$ are related as

A
$$\nu$$$$\times T = 1$$

B
$$\nu$$$$/T=1$$

C
$$\nu$$$$ = T/2$$

D
$$\nu$$ = $$T^2$$

Solution

Frequency is the reciprocal of the time period.
So, frequency and time period are related as $$\nu =\dfrac{1}{T}$$
$$\therefore \nu \times T=1$$.
Question 10
1 / -0

Which of the following frequencies can be heard by a normal human being?

A
$$10^4 Hz$$

B
$$10^5 Hz$$

C
$$10^6 Hz$$

D
$$10^7 Hz$$

Solution

The audible range of frequency for human ear is $$20 \ Hz$$ to $$20 \ kHz.$$ Among the given options, only $$10^4 \ Hz$$ frequency lies in the audible range.
So option A is the answer.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Sound Test - 16

Result

Sound Test - 16

Score

-

Rank

-

SHARING IS CARING

Question 1

Jaltarang

Flute

Harmonium

Both (B) and (C)

Solution

Question 2

Sound waves in air are transverse waves

Sound wave does not required a material medium for its propagation

Sound travels faster in gas than in solid

Sound travels faster in solid than in gas

Solution

Question 3

Has a definite pitch

Has a definite quality

Has a definite loudness

Can penetrate the wall

Solution

Question 4

multiple refractions

multiple reflections

multiple diffractions

multiple polarization

Solution

Question 5

Solution

Question 6

absorption of sound

reflection of sound

diffraction of sound

to hear an echo

Solution

Question 7

echo

Echelon effect

reverberation

shrillness

Solution

Question 8

a few windows to be opened

all closed windows

maps hanging from walls

hanging curtains.

Question 9

$$\nu$$$$\times T = 1$$

$$\nu$$$$/T=1$$

$$\nu$$$$ = T/2$$

$$\nu$$ = $$T^2$$

Solution

Question 10

$$10^4 Hz$$

$$10^5 Hz$$

$$10^6 Hz$$

$$10^7 Hz$$

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.