Skip to content

Menu

Game modes

Account

← Sound
GK QUESTION#3022

For a longitudinal sound wave in air, consider these statements: I. Compression is a region of pressure above the undisturbed value. II. Rarefaction is a region of pressure below the undisturbed value. Which statements are correct?

  1. AOnly I
  2. BOnly II
  3. CBoth I and IICorrect answer
  4. DNone of the above
Show AnswerHide Answer

Answer

C. Both I and II

Show ExplanationHide Explanation

Explanation

For a longitudinal sound wave in air, a compression has pressure above the undisturbed value and a rarefaction has pressure below it. These pressure variations travel through the medium; air particles oscillate about their equilibrium positions.

Sign in to report a question issue

Explore this topic

Which term describes the human ear’s perception of the strength of a sound?At fixed frequency in a fixed medium, the intensity of a small-amplitude sinusoidal sound wave is proportional to…Statement I: Sound can travel through a vacuum. Statement II: In human beings, the vibration of vocal cords…