Endoscopy, a technique used to explore the stomach or other inner parts of the body is based on the phenomenon of:
✓ Correct answer: a) Total internal reflection
ExplanationEndoscopy is a medical procedure that uses a flexible tube with a light and camera (endoscope) to explore the inside of the body, such as the stomach, intestines, or other organs.The technique relies on the phenomenon of total internal reflection to transmit light through fiber-optic cables inside the endoscope.Total internal reflection occurs when light traveling through a denser medium (such as glass or optical fibers) strikes the boundary with a less dense medium (like air) at a certain angle, causing the light to reflect entirely back into the denser medium instead of refracting out.488
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