46. Propagation of sound can be visualised as propagation of ________ variations in the medium A.Elasticity B.Viscosity C.Density D.Porosity
Option C Solution: 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.
