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How does the sound produced by a vibrating object in a medium reach your ear? - Science

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प्रश्न

How does the sound produced by a vibrating object in a medium reach your ear?

लघु उत्तर
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उत्तर

When an object vibrates, it also sets the particles of the medium around it vibrate. These particles do not travel all the way from the vibrating object and reach our ears; rather, the particles of the medium in contact with the vibrating object get displaced from their equilibrium position, which exerts a force on the adjacent particle and displaces it as well, and the initial particles return to their original position. This process continues in the medium until the sound reaches our ears. The disturbance created by a source of sound in the medium travels through the medium and not the particles of the medium.

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पाठ 12: Sound - Intext Questions [पृष्ठ १६२]

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एनसीईआरटी Science [English] Class 9
पाठ 12 Sound
Intext Questions | Q 1 | पृष्ठ १६२

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संबंधित प्रश्‍न

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State whether the following statement is true or false :
Sound produced by a vibrating body travels to our ears by the actual movement of air.


A device called oscillator is used to send waves along a stretched string. The string is 20 cm long, and four complete waves fit along its length when the oscillator vibrates 30 times per second. For the waves on the strings.

(a) what is their wavelength?
(b) what is their frequency
(c) what is their speed?


A sound producing body is at considerable distance from a man. There can be four different media W, X, Y and Z between the sound producing body and the man. The medium X brings the sound to man most quickly whereas medium Z takes the maximum time. The time taken by medium W in bringing sound to man is less than that of X but more than that of Z. The medium Y, however, fails to bring the sound from the sound producing body to the man. Which medium could be the one :
(a) having on fixed shape and no fixed volume?
(b) having a fixed volume but no fixed shape?
(c) having the same composition as that on the moon?
(d) having a fixed shape and a fixed volume?


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Describe an experiment to show that sound cannot travel through vaccum.


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