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प्रश्न
Answer briefly.
What do you mean by an echo?
व्याख्या
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उत्तर
An echo is the repetition of the original sound because of reflection from some rigid surface at a distance from the source of sound.
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Echo, Reverberation and Acoustics
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 8: Sound - Exercises [पृष्ठ १५७]
