Question

define echo?
What should be the dimension of class rooms so that no echo can be produced?​

Answer 1

For no echo to be produced in a classroom, the classroom should be square shaped with distance between the walls to be less than 17.2 m. Also, the ceiling should be curved shaped so that the reflection of sound wave is uniform throughout the room.

Answer 2

Answer:

For no echo to be produced in aclassroom, the classroom should be square shaped with distance between the walls to be less than 17.2 m. Also, the ceiling should be curved shaped sothat the reflection of sound wave is uniform throughout the room.