Answers

  • Brainly User
2016-04-06T19:20:00+05:30
Minimum distance between source and reflecting surface should be 17.2 meters.
interval between original and reflected echo should be 0.1 secs.



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2016-04-06T19:20:12+05:30
1.THERE MUST BE A MEDIUM FOR THE TRAVEL OF SOUND WAVES.
2.THERE MUST BE AN OBJECT BY WHICH THE WAVES GET                     REFLECTED.
3.THE MINIMUM DISTANCE FOR AN ECHO TO BE HEARD IS                    17.2 meters.
                                                                              by Dam Good

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tnk
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