The echo (reflected sound) will be distinctly heard only at ordinary - ProProfs Discuss
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The echo (reflected sound) will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least:



A. 13 m
B. 17 m
C. 19 m
D. 23 m

This question is part of G. Science (Grade 5 - 8)
Asked by Hamadahmed, Last updated: May 22, 2020

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hamadahmed

Hamadahmed

Answered Apr 15, 2018

17 m
 

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