Question

Inportant practical applications of reflections of sound waves are

Answer 1

Answer:

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Two practical applications of reflection of sound waves: (i) Hearing aid: It is a device used by the people who are hard of hearing. Here the sound waves, which are received by the hearing aid are reflected into a narrower area leading to the ear. (ii) Sound boards: Curved surfaces can reflect sound waves.

Answer 2

Answer:

(i) Hearing aid: It is a device used by the people who are hard of hearing. ...

(ii) Sound boards: Curved surfaces can reflect sound waves. This reflection of sound waves is used in auditorium to spread the waves uniformly throughout the hall.