Write any three conditions to hear …
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Yogita Ingle 7 years, 1 month ago
The conditions to hear an echo are
(i) The time interval between source sound and reflected sound must be atleast 0.1s.
(ii) The minimum distance between the obstacle and source of sound should be atleast 17.2 m.
Echo is a repetition of sound due to the reflection of original sound by a broad and hard obstacle.
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