when is sound is reflected from a distant object an echo is produced. Let the distance between the reflecting surface and the source of sound production remains the same. Do you hear echo sound on a hotter day?
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Let the distance between the reflecting surface and the source of sound production remains the same. Do you hear echo sound on a hotter day? As the temperature increases, the speed of the sound also increases. Hence, the speed of sound on a hotter day is more.
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An echo can only be heard if it reaches the ear after 0.1 secs.
Time taken = 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 then it won't be heard.
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