Question

application of multiple reflection of sound

Answer 1

Here is your answer-

It is obvious that the soundboards work on the reflection of sound. The ear trumpet is a hearing aid, which is used by the persons who are hard of hearing. ... Thus, an ear trumpet also works on the reflection of sound. In a stethoscope the heart beat of a patient reaches the doctor's ears by multiple reflection of sound.

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.

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Answer 2

Answer:

In a stethoscope, the sound of the patient's heartbeat reaches the doctor's ear by multiple reflections of sound. The working of a hearing aid is based on the reflection of sound. In a hearing aid, the sound waves are reflected into a slimmer area so as to direct the sound to the ear.