Question

Define echo?write the applications for echo.

Answer 1

Echo and its applications.

• When a certain sound wave is traveling in a certain path and there is some kind of obstruction or surface the path's end the sound wave ( like the light).
• It gets reflected back in the same path towards the point from which the sound waves were released hence this reflection of sound after a certain amount of time is known as Echo.
• When we hear more than one echo then this implies that the sound wave had been traveling and getting reflected more than once hence producing multiple echoes.

• This phenomenon of a sound wave can be used in many areas such as:-
• Sonar -  This is a method used in submarines to measure the distance of a certain object from the submarine.
• Scanning machines -  The internal organs can be checked by doctors using this method.
• Many animals and insects like bats use this method to fly without the need of visuals.

To know more:

What is echo ?factors important for echo?​

brainly.in/question/15546591

Answer 2

Answer:

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

Applications of echoes - example

Applications of echoes - exampleEchoes are used by bats, dolphins and fisherman to detect an object / obstruction. They are also used in SONAR (Sound navigation and ranging) and RADAR(Radio detection and ranging) to detect an obstacle.