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प्रश्न
Give two practical applications of reflection of sound waves.
उत्तर
- Megaphones or loudhailers, horns: Musical instruments such as trumpets and shehnai are all designed to send sound in a particular direction without spreading it in all directions.
- Stethoscope: A stethoscope is a medical instrument for listening to sounds produced within the body, mainly in the heart or lungs. In stethoscopes, the sound of the patient’s heartbeat reaches the doctor’s ears through multiple reflections of sound.
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