What is a stethoscope? Name the principle on which a stethoscope works

cbse
sound
cbse-class-9-science

#1

What is a stethoscope? Name the principle on which a stethoscope works.
Answer:
Stethoscope is a medical instrument used for listening sounds produced within the body, chiefly in the heart or lungs. Stethoscope works on the principle of multiple reflection of sound.