Question

How Horns and Megaphones use multiple reflections of sound?

Answer 1

Answer:

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In stethoscope, the sound of patient's heartbeat is guided along the tube of the stethoscope to the doctors ear by multiple reflections of sound. Horns, musical instruments such as trumpets and sehnais, loudhailers (megaphones), loudspeakers, etc., are all design to keep sound from spreading in all directions.

Explanation:

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