Saved Bookmarks
| 1. |
What is echo what is the minimum time required for formation of echo |
|
Answer» The velocity of sound in DRY air is APPROXIMATELY 343 m/s at a TEMPERATURE of 25 °C. Therefore, the reflecting object must be more than 1.72m from the sound source for echo to be perceived by a PERSON located at the source. When a sound produces an echo in two seconds, the reflecting object is 343m away. |
|