Question

प्रश्न 5 झेन की द न पाठ के आधार पर बताइए कि मनोरुग
मूल कारण क्या होता है?
(3)​

Answer 1

Answer:

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Stethoscope, medical instrument used in listening to sounds produced within the body, chiefly in the heart or lungs. It was invented by the French physician R.T.H. Laënnec, who in 1819 described the use of a perforated wooden cylinder to transmit sounds from the patient's chest (Greek: stēthos) to the physician's ear.