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An echo repeats two syllables.If the velocity of sound is 330 m/s, then the distance of the reflecting surface is?

An echo repeats two syllables.If the velocity of sound is 330 m/s, then the distance of the reflecting surface is? 

Grade:9

1 Answers

venkatesh
34 Points
7 years ago
Answer is 66mBecause velocity of sound is 330 m/s so the minimum distance required to hear sound is 330/10=33mFor one syllable 33m so for two syllables 66m

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