engineering recuitment GATE ECE 2023-24 Test Series Electromagnetic Theory Electromagnetic Wave Propagation Plane Wave At Oblique Incidence
Light from free space is incident at an angle θ1to the normal of the facet of a step-index large core optical fibre. The core and cladding refractive indices are n1 = 1.5 and n2 = 1.4, respectively.
The maximum value of θ1 (in degrees) for which the incident light will be guided in the core of the fibre is ________.
Enter numerical value using the virtual keypad. Round off where necessary.