Working of an optical fibre is based on the principle of total internal reflection of light. When a signal in the form of light is directed at one end of the fibre at a suitable angle, it undergoes repeated total internal reflections along the length of the fibre and finally comes out at the otherend.
Class 12 Physics Chapter 9 Ray Optics and Optical Instruments Session 2024-2025.
State the principle on which the working of an optical fibre is based.
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