(B) Sound is a mechanical wave that requires a material medium (like solid,liquid,or gas) to travel from one point to another. This is because sound p

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Sound waves require a material medium for propagation

(B) Sound is a mechanical wave that requires a material medium (like solid,liquid,or gas) to travel from one point to another. This is because sound propagates through the vibration of atoms and molecules in the medium. The space between the moon and the earth is a vacuum,meaning there is no material medium present. Therefore,sound waves produced by an explosion on the moon cannot travel through the vacuum of space to reach the earth.

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

Easy

$A$ big explosion on the moon cannot be heard on the earth because

A
The explosion produces high frequency sound waves which are inaudible
B
Sound waves require a material medium for propagation
C
Sound waves are absorbed in the moon's atmosphere
D
Sound waves are absorbed in the earth's atmosphere

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Waves and Sound

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

Velocity of sound in air:
$I.$ Increases with temperature
$II.$ Decreases with temperature
$III.$ Increases with pressure
$IV.$ Is independent of pressure
$V.$ Is independent of temperature
Choose the correct answer.

Easy

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The speed of sound in mercury at a certain temperature is $1450 \, m/s$. Given the density of mercury as $13.6 \times 10^3 \, kg/m^3$,the bulk modulus for mercury is:

Medium

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$A$ man sets his watch by a whistle that is $2\, km$ away. How much will his watch be in error? (Speed of sound in air = $330\, m/s$)

Easy

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$A$ person in front of a mountain is beating a drum at the rate of $40$ per minute and hears no distinct echo. If the person moves $90 \, m$ closer to the mountain,he has to beat the drum at $60$ per minute to not hear any distinct echo. The speed of sound is .............. $ms^{-1}$.

DifficultKVPY 2018

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$SONAR$ emits which of the following waves?

EasyAIIMS 1999

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$A$ big explosion on the moon cannot be heard on the earth because

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Velocity of sound in air:$I.$ Increases with temperature$II.$ Decreases with temperature$III.$ Increases with pressure$IV.$ Is independent of pressure$V.$ Is independent of temperatureChoose the correct answer.

The speed of sound in mercury at a certain temperature is $1450 \, m/s$. Given the density of mercury as $13.6 \times 10^3 \, kg/m^3$,the bulk modulus for mercury is:

$A$ man sets his watch by a whistle that is $2\, km$ away. How much will his watch be in error? (Speed of sound in air = $330\, m/s$)

$A$ person in front of a mountain is beating a drum at the rate of $40$ per minute and hears no distinct echo. If the person moves $90 \, m$ closer to the mountain,he has to beat the drum at $60$ per minute to not hear any distinct echo. The speed of sound is .............. $ms^{-1}$.

$SONAR$ emits which of the following waves?

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Velocity of sound in air:
$I.$ Increases with temperature
$II.$ Decreases with temperature
$III.$ Increases with pressure
$IV.$ Is independent of pressure
$V.$ Is independent of temperature
Choose the correct answer.