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

1.	When a 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?
Answer» The time taken by echo to be heard t = \(\frac{2d}{v}\) where d = distance between the reflecting surface and source of sound and v = speed of sound in air. As we know that speed of sound increases with increase in temperature. So on a hotter day speed of sound will be higher, so the time after which echo is heard will decrease. If time taken by the reflected sound is less than 0.15 after the production of original sound, then echo is not heard.

When a 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?

Answer»

The time taken by echo to be heard

t = \(\frac{2d}{v}\)

where d = distance between the reflecting surface and source of sound and v = speed of sound in air. As we know that speed of sound increases with increase in temperature. So on a hotter day speed of sound will be higher, so the time after which echo is heard will decrease.

If time taken by the reflected sound is less than 0.15 after the production of original sound, then echo is not heard.

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When a 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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