Sound Test

Result

Sound Test - 36

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

With the length of vocal cords, voice quality:

A
Changes

B
Remains same

C
May or may not change

D
Remains same but loudness changes

Solution

The voice quality changes as per the length of the vocal cords. Men have about $$20\ mm$$ long vocal cords, whereas women have about $$15\ mm$$ long vocal cords. Children have very short vocal cords. That attributes to the different voices of men, women, and children.
Question 2
1 / -0

What is a vibration?

A
A slow to and fro motion of an object.

B
A rapid to and from motion of an object

C
A slow up and down motion of an object

D
All of these.

Solution

Vibration is a mechanical phenomenon whereby very quick oscillations occur about an equilibrium point.
A rapid to and fro motion of an object is called vibration. Up and down is not called vibration it will only be called just oscillations.
Question 3
1 / -0

Sound can be

A
seen

B
touched

C
heard

D
seen, touched and heard at the same time

Solution

Hint: Sound can be heard. People can hear sounds at frequency from about 20 Hz to 20,000 Hz. It can be measured in "decibel".
Step:1 Explanation
Sound can propagate through a medium such as air, water and solids as longitudinal waves and also as a transverse wave in solids. The sound waves are generated by a sound source, it can be only heard So the option (A),(B) and(D) is not possible.
Therefore Option (C) is correct.
Question 4
1 / -0

How does a sound making object differ from one that is silent?

A
sound making objects vibrate

B
sound making objects oscillates

C
sound making objects shows up and down motion

D
none

Solution

Sound making object is compulsorily a vibrating body. When a body vibrates, the particles of the medium around the object are set into vibrations and these vibrations when reaches our ears we hear sound.
Question 5
1 / -0

Which of the following order is correct?

A
Sound $$\rightarrow$$ ear $$\rightarrow$$ inner ear $$\rightarrow$$ vibration of eardrum $$\rightarrow$$ brain $$\rightarrow$$ hearing

B
Ear $$\rightarrow$$ vibration of eardrum $$\rightarrow$$ Inner ear $$\rightarrow$$ hearing $$\rightarrow$$ brain $$\rightarrow$$ vibration

C
Sound $$\rightarrow$$ ear $$\rightarrow$$ inner ear $$\rightarrow$$ vibration of eardrum $$\rightarrow$$ hearing $$\rightarrow$$ brain

D
Sound $$\rightarrow$$ ear $$\rightarrow$$ vibration of eardrum $$\rightarrow$$ inner ear $$\rightarrow$$ brain $$\rightarrow$$ hearing

Solution

When sound strikes the eardrum, it vibrates and this vibration is carried to the inner ear from where it is carried to the brain in the form of impulse. The brain then gives the signal and we hear the sound.
Question 6
1 / -0

Sound can be produced by

A
striking a tuning fork

B
plucking a stretched rubber string

C
flicking a thin ruler

D
all the actions above

Solution

The ultimate source of a sound produced is a vibrating object . Hence all vibrating bodies produce sound. All the activities in the options produce vibrations and hence produce sound.
Question 7
1 / -0

If a pendulum oscillates $$180$$ times in $$3$$ min, then find its frequency and time period?

A
$$20\ Hz, 3\ sec$$

B
$$1\ Hz, 18\ sec$$

C
$$4\ Hz, 10\ sec$$

D
$$1\ Hz, 1\ sec$$

Solution

Given, no. of oscillations $$= 180$$
Time taken $$=3\ min = 180\ sec$$.
By using the formula:
$$Frequency(f) = \dfrac {\text {No. of oscillation}}{\text {Time taken}}$$
$$\Rightarrow f = \dfrac {180}{180} = 1\ Hz$$
By using the formula,
Time period $$(T)= \dfrac {1}{Frequency}$$
$$\Rightarrow T= \dfrac {1}{1} = 1\ sec$$.
Question 8
1 / -0

Sound of explosion taking on other planets are not heard by a person on the earth. Why?

A
The sound of explosion is not so high to reach the earth.

B
Only air is present between the planets and the earth

C
There is a region of vacuum in between the planets and the earth

D
The distance between the planets and the earth is too large for the sound to travel.

Solution

Sound needs a material medium for its propagation from one place to another place. In other words sound cannot travel through vacuum. Since there is a region between the planets and the earth, where there is a vacuum, so the sound of explosions taking place on other planets cannot pass through this vacuum.
Question 9
1 / -0

Two astronauts on the surface of the moon cannot talk to each other. Why

A
There is no atmosphere on the surface of the moon

B
There is no medium in between the two astronauts

C
The sounds cant propagate

D
All

Solution

There is no atmosphere on the surface of the moon. Since there is no medium in between, the sound cannot travel from one astronaut to the another astronaut on the surface of the moon.
Question 10
1 / -0

How sound is produced in flute or clarinet?

A
Air in the tube vibrates

B
Skin of flute vibrates

C
The holes of the flute vibrate

D
No vibration is produced

Solution

When air is blown into the flute, pipe, clarinet etc it vibrates and produces sound.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Sound Test - 36

Result

Sound Test - 36

Score

-

Rank

-

SHARING IS CARING

Question 1

Changes

Remains same

May or may not change

Remains same but loudness changes

Solution

Question 2

A slow to and fro motion of an object.

A rapid to and from motion of an object

A slow up and down motion of an object

All of these.

Solution

Question 3

seen

touched

heard

seen, touched and heard at the same time

Solution

Question 4

sound making objects vibrate

sound making objects oscillates

sound making objects shows up and down motion

none

Solution

Question 5

Sound $$\rightarrow$$ ear $$\rightarrow$$ inner ear $$\rightarrow$$ vibration of eardrum $$\rightarrow$$ brain $$\rightarrow$$ hearing

Ear $$\rightarrow$$ vibration of eardrum $$\rightarrow$$ Inner ear $$\rightarrow$$ hearing $$\rightarrow$$ brain $$\rightarrow$$ vibration

Sound $$\rightarrow$$ ear $$\rightarrow$$ inner ear $$\rightarrow$$ vibration of eardrum $$\rightarrow$$ hearing $$\rightarrow$$ brain

Sound $$\rightarrow$$ ear $$\rightarrow$$ vibration of eardrum $$\rightarrow$$ inner ear $$\rightarrow$$ brain $$\rightarrow$$ hearing

Solution

Question 6

striking a tuning fork

plucking a stretched rubber string

flicking a thin ruler

all the actions above

Solution

Question 7

$$20\ Hz, 3\ sec$$

$$1\ Hz, 18\ sec$$

$$4\ Hz, 10\ sec$$

$$1\ Hz, 1\ sec$$

Solution

Question 8

The sound of explosion is not so high to reach the earth.

Only air is present between the planets and the earth

There is a region of vacuum in between the planets and the earth

The distance between the planets and the earth is too large for the sound to travel.

Solution

Question 9

There is no atmosphere on the surface of the moon

There is no medium in between the two astronauts

The sounds cant propagate

All

Solution

Question 10

Air in the tube vibrates

Skin of flute vibrates

The holes of the flute vibrate

No vibration is produced

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.