Stethoscope works on the principle of1 pointMultiple reflectionsMultiple deflectionsDeflectionInterference

The stethoscope works on the principle of multiple reflections.

Here's a step-by-step explanation:

1. The stethoscope is placed on the area of the body where the internal sounds are to be heard.

2. The sound waves from the body hit the diaphragm of the stethoscope.

3. These sound waves cause the diaphragm to vibrate.

4. These vibrations are transferred through the tube of the stethoscope to the earpiece.

5. The earpiece then transfers these vibrations to the ear drum of the listener.

6. The ear drum vibrates and these vibrations are interpreted by the brain as sound.

7. The multiple reflections occur as the sound waves bounce back and forth within the tube of the stethoscope, amplifying the sound.