Sound - Lesson 16 | When do we hear an echo? - in Hindi (हिंदी में ) | Don't Memorise

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📲IIT JEE Main College & Branch Predictor 2024👉 infinitylearn.... In the previous video, we saw how sound reflects off a solid surface. And echo occurs due to the reflection of sound. At the end of the last video, I told you that the distance between you and the reflection point has to be greater than ‘17.2 metres’ in order for you to hear an echo. But why should this distance be greater than this value in order to hear the repetitive sound? Let us look at it in this video
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#Echo #Speed #Distance