why the reflecting surface must be 17 m away from direct sound source to produce echo. explain
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Because speed of sound is 330m/s and in that distance the sound difference will gonna recognize by us or else if we are too close like 1 m speed of sound is 330m/s and the sound in exact time will reflect and will vibrate in our ear , so in 17m away , sound gonna take 1 sec to reflect because speed is 330m/s.
laxman16:
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I study in kai. saw. laxmibai dattu prashala mangalwedha at solapur
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answer is 360 ..................
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