Question

The persistence of sound in a closed enclosure, due to continuous reflection at the walls, even after the source has stopped producing sound known as:-

• A. The persistence of hearing
• B. An echo
• C. A reverberation
• D. The water sound

Answer 1

The correct option is C

A reverberation

Step 1: Explanation of correct option,

Reverberation is the phenomenon of persistence of sound in a closed enclosure, due to multiple reflections of sound from the walls, even after the source has stopped producing sound.

Step 2: Explanation for incorrect option,

• The persistence of hearing is the effect of every sound reaching our ear remains for 0.1 s. If any other sound reaches our ear within 0.1 s the sound cannot be heard distinctly, this effect is called persistence of hearing.
• An echo is a sound caused by the reflection of sound waves from a surface back to the listener. It is the reflection of sound, arriving at the listener some time after the direct sound.

Hence, option (C) is correct.