Question:
An endoscope is employed by a physician to view the internal parts of a body organ. It is based on the principle of
An endoscope is employed by a physician to view the internal parts of a body organ. It is based on the principle of
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Optical fibres and endoscopes work on the principle of total internal reflection.
Updated On: May 7, 2026
- Interference
- Diffraction
- Total internal reflection
- Refraction
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The Correct Option is C
Solution and Explanation
Concept:
An endoscope uses optical fibres to transmit light and images from inside the body to the observer.
Step 1: Optical fibres work on the principle of total internal reflection.
Step 2: In total internal reflection, light travelling from a denser medium to a rarer medium is completely reflected back into the denser medium if the angle of incidence is greater than the critical angle.
Step 3: In an optical fibre, light undergoes repeated total internal reflections inside the fibre.
Step 4: This allows light to travel through curved paths without escaping.
Step 5: Since endoscopes use optical fibres, their working principle is total internal reflection. \[ \boxed{\text{Total internal reflection}} \]
An endoscope uses optical fibres to transmit light and images from inside the body to the observer.
Step 1: Optical fibres work on the principle of total internal reflection.
Step 2: In total internal reflection, light travelling from a denser medium to a rarer medium is completely reflected back into the denser medium if the angle of incidence is greater than the critical angle.
Step 3: In an optical fibre, light undergoes repeated total internal reflections inside the fibre.
Step 4: This allows light to travel through curved paths without escaping.
Step 5: Since endoscopes use optical fibres, their working principle is total internal reflection. \[ \boxed{\text{Total internal reflection}} \]
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