Question

Sound waves produced by a source are propagating in a medium. The quantity/quantities that change from point to point is/are

• A. Pressure
• B. Density
• C. Temperature
• D. Elasticity

Answer 1

Answer: (A), (B)

The correct options are
A Density
B Pressure

Sound wave is a longitudinal wave and propagates in a medium in the form of alternate compressions and rarefactions . A compression is a region of medium in which particle are compressed i.e. they come closer , due to this , pressure of the medium increases and density of the medium also increases .

A rarefaction is a region opposite to that of compression , where pressure and density get decrease.