sound made in front of tall building 18 M away is repeated name the phenomenon and briefly explain it
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It is known a echo
Sound can be reflected or absorbed,these properties of sound have many applications in our daily activities. You must be familiar with the echo it is simply the reflection of sound by a hill or a large building some distance away
Sound is reflected from a surface in the same way as a ball bounces back from a wall u can hear a echo only from a far distance this is because the echo reaches ur ears quickly and ears are not able to distinguish it our ears are able to distinguish two sound only if the second sound is received after 1/10 of a second
Therefore distance travelled by sound in 1/10 of a second = speed ×time
340m/s (speed of sound in air)×1/10s=34m (distance both ways ) hope it helps Mark it brainliest
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