Exam-style question
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Discuss how image transmission occurs in fibre optics. What role does total internal reflection play in this process?.
Model answer
What a good answer should say
- In fibre optics, image transmission occurs through the principle of total internal reflection, where light signals are guided along the fibre core.
- When light hits the core-cladding boundary at a steep angle, it reflects back into the core, allowing the signal to travel long distances with minimal loss.
Explanation
Why this works
This answer is strong because it clearly explains the mechanism of image transmission in fibre optics and highlights the importance of total internal reflection. The question tests the understanding of how light behaves in optical fibres, which is crucial for comprehending fibre optic technology.
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