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what is echo
deepak77srivastava:
reflection of sound is called echo
okk thnxx
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A repeated sound that is caused by the reflection of sound waves from a surface. The sound is heard more than once because of the time difference between the initial production of the sound waves and their return from the reflecting surface...
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wlcm
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echoes are reflected sound waves... that require a minimum distance between source and the reflector
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