list two applications of reflection of sound
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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.
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Two practical applications of reflection of sound waves are:
(a) Reflection of sound is used to measure the distance and speed of underwater objects. This method is known as SONAR.
(b)Working of a stethoscope is also based on reflection of sound. In a stethoscope, the sound of the patient’s heartbeat reaches the doctor’s ear by multiple reflections of sound.
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