In a step index fibre the refractive index of core n1=1.48 and that of cladding n2=1.45. The numerical apparture of the fibre will be nearly:
A. 0.3
B. 0.5
C. 0.7
D. 0.9
Answer:A
In a step index fibre the refractive index of core n1=1.48 and that of cladding n2=1.45. The numerical apparture of the fibre will be nearly:
A. 0.3 B. 0.5 C. 0.7 D. 0.9