Courses
Courses for Kids
Free study material
Offline Centres
More
Store

# When a sound is reflected from a distant object, an echo is produced . Let the distance between the reflecting surface and the source of sound production remain the same . Do you hear an echo sound on a hotter day?

Last updated date: 18th Jul 2024
Total views: 348.3k
Views today: 6.48k
Let “$d$” = Distance between the reflecting Surface and the Sound Source “$v$” = Sound Speed in the air. As a result, the echo can become audible over time $,t{\text{ }} = {\text{ }}2d/v$ . The speed of sound increases as the temperature rises on a hotter day. As a result, the time it takes for an echo to be heard decreases. If the reflected sound's duration is less than $0.1\,s$, after the original sound is produced, no echo is detected. If the duration is longer than $0.1{\text{ }}s$, however, an echo can be heard.
Note: Now the question arises as to why there is a pause in hearing an echo. There would be a slight time difference between the perception of the original sound and the perception of the reflected sound because sound perception lasts only $0.1$ seconds in memory. As a result, we refer to the experience of a reflected sound wave as an echo.