(B) When a string is plucked,it vibrates at a specific frequency determined by its length,tension,and mass per unit length. This vibration creates pre

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The frequency of the wave in the string is equal to the frequency of the sound produced

(B) When a string is plucked,it vibrates at a specific frequency determined by its length,tension,and mass per unit length. This vibration creates pressure waves in the surrounding air. The frequency of the vibration of the string is the source of the sound. According to the principles of wave physics,the frequency of the source (the vibrating string) is equal to the frequency of the sound wave produced in the medium (air).

Class 11 Physics Waves Sound Waves (Longitudinal wave) and it’s Characteristics (Speed etc.)

Easy

$A$ sound is produced by plucking a string in a musical instrument,then

A
The velocity of the wave in the string is equal to the velocity of sound in the string
B
The frequency of the wave in the string is equal to the frequency of the sound produced
C
The wave in the string is progressive
D
The tension in the string varies from point to point

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Waves

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Sound Waves (Longitudinal wave) and it’s Characteristics (Speed etc.)

The ratio of the velocity of sound in hydrogen gas $(\gamma = 7/5)$ to that in helium gas $(\gamma = 5/3)$ at the same temperature will be

Medium

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$Assertion :$ The change in air pressure affects the speed of sound.
$Reason :$ The speed of sound in gases is proportional to the square of pressure.

EasyAIIMS 2008

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$A$ car is moving with a speed of $72 \,km/h$ towards a hill. The car blows its horn at a distance of $1800 \,m$ from the hill. If the echo is heard after $10 \,s$, the speed of sound (in $m/s$) is:

DifficultAP EAMCET 2008

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$A$ source of sound $S$ having frequency $f$. Wind is blowing from source to observer $O$ with velocity $u$. If the speed of sound with respect to air is $C$,the wavelength of sound detected by $O$ is:

Medium

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Calculate the temperature at which the speed of sound will be two times its value at $0\,^oC$. (in $,K$)

Difficult

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$A$ sound is produced by plucking a string in a musical instrument,then

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The ratio of the velocity of sound in hydrogen gas $(\gamma = 7/5)$ to that in helium gas $(\gamma = 5/3)$ at the same temperature will be

$Assertion :$ The change in air pressure affects the speed of sound.$Reason :$ The speed of sound in gases is proportional to the square of pressure.

$A$ car is moving with a speed of $72 \,km/h$ towards a hill. The car blows its horn at a distance of $1800 \,m$ from the hill. If the echo is heard after $10 \,s$, the speed of sound (in $m/s$) is:

$A$ source of sound $S$ having frequency $f$. Wind is blowing from source to observer $O$ with velocity $u$. If the speed of sound with respect to air is $C$,the wavelength of sound detected by $O$ is:

Calculate the temperature at which the speed of sound will be two times its value at $0\,^oC$. (in $,K$)

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$Assertion :$ The change in air pressure affects the speed of sound.
$Reason :$ The speed of sound in gases is proportional to the square of pressure.