EASY

Earn 100

Loudness depends upon the of the amplitude of the sound wave.

50% studentsanswered this correctly

Important Questions on Sound

MEDIUM

Science>Physics>Sound>Characteristics of Sound

A man playing a flute is able to produce notes of different frequencies. If he closes the holes near his mouth, will the pitch of the note produced, increase or decrease? Give a reason.

EASY

Science>Physics>Sound>Characteristics of Sound

It is observed that during march-past we hear a base drum distinctly from a distance compared to the side drums. Give a reason for the above observation.

MEDIUM

Science>Physics>Sound>Characteristics of Sound

A small speaker delivers

2 W

of audio output. At what distance from the speaker will one detect

120 d B

intensity sound? [Given reference intensity of sound as

10^{- 12} W / m^{2}

]

EASY

Science>Physics>Sound>Characteristics of Sound

It is observed that during march-past we hear a base drum distinctly from a distance compared to the side drums.
Name the characteristic of sound associated with the above observation.

EASY

Science>Physics>Sound>Characteristics of Sound

Which characteristic of sound, makes it possible to recognize a person by his voice without seeing him?

EASY

Science>Physics>Sound>Characteristics of Sound

Two waves of the same pitch have amplitudes in the ratio

1 : 3

. What will be the ratio of their frequencies?

EASY

Science>Physics>Sound>Characteristics of Sound

Two waves of the same pitch have amplitudes in the ratio

1 : 3

. What will be the ratio of their intensities?

EASY

Science>Physics>Sound>Characteristics of Sound

The relationship between the objective measurement of intensity of sound

I

and the subjective sensory response called loudness

L

is given by,

MEDIUM

Science>Physics>Sound>Characteristics of Sound

Two identical sound

A

and

B

reach a point in the same phase. The resultant sound is

C

. The loudness of

C

n dB

higher the loudness of

A

EASY

Science>Physics>Sound>Characteristics of Sound

A sound has an intensity of

2 \times 10^{- 8} W m^{- 2}

. Its intensity level (in decibels) is

(\log_{10} 2 = 0.3)

EASY

Science>Physics>Sound>Characteristics of Sound

Intensity level of sound whose intensity is

10^{- 8} {Wm}^{- 2}

EASY

Science>Physics>Sound>Characteristics of Sound

Noise level is measured in _____.

EASY

Science>Physics>Sound>Characteristics of Sound

How many times more intense is a

60 dB

sound than a

30 dB

sound?

EASY

Science>Physics>Sound>Characteristics of Sound

How many times more intense is

90 dB

sound than

40 dB

sound?

MEDIUM

Science>Physics>Sound>Characteristics of Sound

Two loudspeakers are being compared. One is perceived to be $32$ times louder than the other. The difference in intensity levels between the two, when measured in decibels, is

(Note: Human mind perceives doubling of loudness for each $10 dB$ change)

EASY

Science>Physics>Sound>Characteristics of Sound

When string is plucked at one-fourth length from one end, the vibration of the string is called _____ (First/Second) harmonic.

HARD

Science>Physics>Sound>Characteristics of Sound

The power of sound from the speaker of radio is