Question

refractive index of core is equal to n1= 1.5 15 critical angle is 69.1 degree then what will be the refractive index of cladding​

Answer 1

Explanation:

Sol: Let the refractive index of core, n1 = 1.48

and the refractive index of cladding , n2 = 1.45

Numerical aperture (NA) images

images

Let θ0 be the acceptance angle

n2 sin 90 = n1 sin θc [θc = critical angle]

The fractional refractive ...