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With the help of a diagram describe how ...

With the help of a diagram describe how compression and rarefaction pulses are produced in air near a source of sound. `(AS_5) `

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A vibrating tuning fork producing sound waves is shown in the figure. When its prong moves outward, it compresses the layer of air in front of it creating a region of high pressure, called compressions. The compression start to move away from the vibrating prong of the tuning fork. When the vibrating prong moves backward, it creates a region of low pressure, called rarefaction. As the prong moves back and forth rapidly, a series of compression and rarefactions is created .These make the sound wave to propagate through the medium
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Sound propagates in air through compression- rarefaction.explain

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Knowledge Check

  • A sound wave is passing through air column in the form of compression and rarefaction. In consecutive compressions and rarefactions.

    A
    (a)denisty remains constant.
    B
    (b) Boyle's law is obeyed.
    C
    (c) bulk modulus of air oscillates.
    D
    (d) there is no transfer of heat.

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