Question 4 — In a room, the reflected - Questions at the end of the chapter - Chapter 10 - Sound Waves: Characteristics and Application (Exploration

Last updated at July 3, 2026 by

Question 4
In a room, the reflected sound reaches the ear 0.05 s after its production. Will it produce an echo or reverberation? Justify your answer.
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  • The gap is 0.05 s , which is less than 0.1 s, so the reflected sound is not heard as a separate echo.
  • A gap under 0.1 s (here 0.05 s) causes reverberation — the reflections overlap and the sound persists.
Echo or Reverberation The gap is 0.05 s Less than 0.1 s, so not a separate echo It is reverberation
Back to: 10.7.2 Reverberation
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