Question

whic property of sound leads to d formation of echoes ? briefly explain?

Answer 1

reflection of sound is the property which causes an echo
When a sound is repeatedly reflected and if minimum distance between sound sources and reflecting surface is more than 17.2 m, then we hear echoes. 

Answer 2

The property of reflection of sound waves leads to the formation of Echo.

Explanation:

• Sound is transmitted in the form of waves.

• When such a sound wave hits a rigid surface the direction of the sound is changed.

• As a result the sound wave reaches the source. This is known as Echo.

• Hence for formation of a solid and a rigid surface is a must. The sound also reach the observer after 0.1 second.

To know more about the formation of Echo,

What are the conditions for formation of echo,

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