Echoes are the reflected sound waves that we hear. Explain.

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Solution

When we produce a sound wave and it strikes an obstacle, it comes back to us after reflection, this reflected sound wave is called echo. For example, when we shout or clap near a suitable reflecting objects such as a tall building or a mountain, we will hear the same sound again a little later. This sound which we hear is called an echo.

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Similar questions

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?

Q. The repetition of sound caused by the reflection of sound wave is called Echo.

Answer the following.

(1) Suppose you and your friend are on the moon. Will you be able to hear any sound produced by your friend? Give reasons.

(2) Why can we not hear echo produced in our classroom?

(3) Why are ceilings of concert halls, cinema halls curved?

(4) Which type of waves are sound waves? State their characteristics.

(5) Explain auditory aspects of human ear.

Q. What should be the minimum time interval between the original sound and the reflected sound to hear a distinct echo?

Q. The minimum distance between source of sound and reflecting body to hear an echo is___________.

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