When sound is reflected from a distant object, an echo is produced. Le

1.	When sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound remain the same. Do you hear an echo sound on a hotter day? Justify your answer.
Answer» An echo can only be heard if it reaches the ear after 0.1 secs. Time taken = \(\frac{Total\,distance}{Velocity}\) As on a hotter day, the velocity of sound is more. So if the time taken by the echo is less than 0.1 sec than it won’t be heard.

When sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound remain the same. Do you hear an echo sound on a hotter day? Justify your answer.

Answer»

An echo can only be heard if it reaches the ear after 0.1 secs.

Time taken = \(\frac{Total\,distance}{Velocity}\)

As on a hotter day, the velocity of sound is more. So if the time taken by the echo is less than 0.1 sec than it won’t be heard.

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When sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound remain the same. Do you hear an echo sound on a hotter day? Justify your answer.

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