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When using optical fiber in data transmission, the angle of incidence Oi of the light siyrce ib the glass fiber should be?

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When using optical fiber in data transmission, the angle of incidence Oi of the light siyrce ib the glass fiber should be? Answer: Greater than critical angle

In optical fibers, total internal reflection occurs only when the angle of incidence is greater than the critical angle, ensuring light is fully guided through the fiber without escaping.

Question context

This question is part of 📡 Electronics and Communication Engineering (ECE) within the broader 🛠️ Engineering Essentials subject and appears in the Engineering College Admission Test (ECAT) preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.