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  1. Propagation of sound can be visualised as propagation of ________ variations in the medium

    2. A.

     Elasticity
    B.

     Viscosity
    C.

     Density
    D.

     Porosity

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    Answer : Option C

    Explanation :

    Pressure is related to the number of particles of the medium in a given volume. More density of the particles in the medium gives more pressure and vice-versa. Thus, propagation of sound may be visualised as propagation of pressure variations or density variations in the medium.

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