Question

State three condition necessary for echo​

Answer 1

Answer:

To produce an echo, the conditions required a are: (i) There should be sufficient time gap between original and reflected sounds. ... For the formation of echo, the reflecting surface must be rigid such as a building, hill or a cliff. (iv) Size of the obstacle should be quite large for the echoes to be heard.

Explanation:

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Answer 2

Answer:

3 conditions

Explanation:

1. echo forms when the sound cannot pass through the air
2. the sound gets trapped in a clumsy or closed space and get rhythmically vise-versa
3. when the sound are too loudy it may vibrates the surrounding and makes echo

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