Question 13 of 23intermediate🔍 AnalyzeShort Answer3 marks
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.
Correct Answer
It will produce reverberation because the time gap is 0.05 s, which is less than the 0.1 s required to hear an echo.
Exercise: Revise, Reflect, Refine | Q: 4 | (Page 22)
For More Understanding
Explanation
According to the textbook context, to hear a distinct echo, the time gap between the original sound and the reflected sound must be at least 0.1 s. If the time gap is less than 0.1 s, the sounds cannot be distinguished separately. Reverberation occurs when sound reflections arrive with a time difference less than 0.05 s (or generally less than 0.1 s), causing the sound to persist. Since 0.05 s is less than the 0.1 s minimum required for an echo, it results in reverberation.