Optical fibres use total internal reflection for signal transmission. What would happen if the cladding had a higher refractive index than the core, and why?
نوری ریشے سگنل کی ترسیل میں مکمل اندرونی انعکاس استعمال کرتے ہیں۔ غلاف کا ضریب انعطاف مرکزی حصے سے زیادہ ہو تو کیا ہوگا اور کیوں؟
Solution & explanation
Core-to-cladding rays could not undergo total internal reflection at that boundary. Light would leak into the cladding rather than being guided by the stated mechanism.
Independent study answer. Original textbook ↗ · English-medium printed page 86.