A transparent slab of thickness d has a refractive index n(z) that increases with
A transparent slab of thickness d has a refractive index n(z) that increases with Here z is the vertical distance inside the slab, measured from the top. The slab is placed between two media with uniform refractive indices n1 and n2 (> n1), as shown in the figure. A ray of light is incident with angle qi with a lateral displacement .from medium 1 and emerges in medium 2 with refraction angle q Which of the following statement(s) is(are) true ?
(A) is independent of n2 (B) is dependent on n(z)
(C) n1sinqi = (n2 – n1)sinqf (D) n1sinqi = n2sinqf