Sound Test

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Sound Test - 50

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Weekly Quiz Competition

Question 1
1 / -0

Outer ear is called

A
Tympanic Membrane

B
Cochlea

C
Pinna

D
Auditory canal

Solution

Outer ear is called PINNA. It collects the sound from the surroundings
Question 2
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 3
1 / -0

Human ear is divided into:

A
Outer ear

B
Middle ear

C
Inner ear

D
All

Solution

The human ear consists of three parts- the external ear, middle ear, and inner ear. The outer ear consists of the pinna and ear canal. The middle ear includes the tympanic cavity and the three ossicles and the inner ear consists of semicircular canals, utricle and saccule, and cochlea.
Question 4
1 / -0

Portion of a wave in which density of the particles of the medium is higher than the normal density is called

A
Rarefaction

B
Compression

C
Refraction

D
None of the above

Solution

When the Longitudinal wave propagate in a medium then at some point density of medium changes from maximum to minimum. Maximum density of medium is known as compression and minimum density of medium is known as Rarefaction.
Hence Option B
Question 5
1 / -0

The waves produced in a spring by compressing a small portion of it and releasing are

A
Transverse waves

B
Longitudinal waves

C
Oscillatory waves

D
Non material waves

Solution

Waves produced in a spring by compressing a small portion of it and releasing are longitudinal waves.
Question 6
1 / -0

Wave in which particles of the medium oscillate in a direction parallel to the direction of wave motion is

A
Transverse wave

B
Longitudinal wave

C
Oscillatory wave

D
None

Solution

By definition, a wave in which the particles of the medium oscillate about their mean positions in the direction of propagation is known as a longitudinal wave. It can be produced in any medium.
Question 7
1 / -0

Fill in the blank.
Vibrations inside the ear are amplified by the three bones namely the ____ in the middle ear

A
Hammer, anvil and stirrup

B
Hammer, Anvil and pinna

C
Hammer, cochlea and stirrup

D
Auditory bone, anvil and stirrup
Solution
The vibrations reaching the eardrum are amplified several times by three bones:
hammer,
anvil and
stirrup

They are located in the middle ear.
Question 8
1 / -0

Disturbance produced in a material medium due to the vibratory motion of the particles of the medium is called a

A
compression

B
vibration

C
wave

D
rarefaction

Solution

In wave motion, the particles of the medium vibrate about their mean positions. The particles of the medium do not move from one place to another.
Question 9
1 / -0

Echoes are heard due to

A
multiple reflection

B
multiple refraction

C
single refraction

D
diffraction of sound

Solution

When you shout near the mountain then you will hear your sound multiple times this is due to the reflection of sound waves from the mountains. This secondary sound is known as echo of sound.
Hence, Echoes can be heard due to multiple reflections.
Question 10
1 / -0

Sound is called longitudinal wave because

A
sound need a material medium for propagation

B
the molecules of the medium oscillate to and fro about their mean position in the direction of propagation

C
sound waves moves in the direction of its production

D
all reasons are correct

Solution

When a sound travels through its medium, the molecules in the air oscillate to and fro about their mean positions in the direction of propagation of the sound wave. Hence it is a longitudinal wave.

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Re-Attempt Weekly Quiz Competition

Sound Test - 50

Result

Sound Test - 50

Score

-

Rank

-

SHARING IS CARING

Question 1

Tympanic Membrane

Cochlea

Pinna

Auditory canal

Solution

Question 2

$$20\ Hz, 3\ sec$$

$$1\ Hz, 18\ sec$$

$$4\ Hz, 10\ sec$$

$$1\ Hz, 1\ sec$$

Solution

Question 3

Outer ear

Middle ear

Inner ear

All

Solution

Question 4

Rarefaction

Compression

Refraction

None of the above

Solution

Question 5

Transverse waves

Longitudinal waves

Oscillatory waves

Non material waves

Solution

Question 6

Transverse wave

Longitudinal wave

Oscillatory wave

None

Solution

Question 7

Hammer, anvil and stirrup

Hammer, Anvil and pinna

Hammer, cochlea and stirrup

Auditory bone, anvil and stirrup

Solution

Question 8

compression

vibration

wave

rarefaction

Solution

Question 9

multiple reflection

multiple refraction

single refraction

diffraction of sound

Solution

Question 10

sound need a material medium for propagation

the molecules of the medium oscillate to and fro about their mean position in the direction of propagation

sound waves moves in the direction of its production

all reasons are correct

Solution

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