Index.of Jpg Nud Ranking The Phase Shift In Refracted And Reflected Rays?

Ranking the phase shift in refracted and reflected rays? - index.of jpg nud

A beam of light strikes the interface between material 1 and Material 2
http://session.masteringphysics.com/problemAsset/1012564/17/1012564.jpg

Part A. Taking into account the refractive index n_1 and n_2 material 1 and material 2, or the range of these scenarios on the basis of the phase change in the refracted ray. Ranking from highest to lowest.
(1) n1 (water) = 1.33 N2 (quartz) = 1.46
(2) N1 (water) = 1.33, N 2 (air) = 1.00
(3) N1 (air) N2 = 1.00 (quartz) = 1.46
(4) N1 (air) N2 = 1.00 (water) = 1.33
(5) N1 (water) = 1.00 N2 (diamond) = 2.42
(6) N1 (benzene) = 1.50 N2 (water) = 1.33

* I know the amount of phase shift in the refracted ray does not depend on the extent of changeRefractive index between two materials, but do not know what to do?

B GRADE such scenarios based on the phase change in the reflected beam. Ranking from highest to lowest.
(1) N1 (water) = 1.33 N2 (diamond) = 2.42
(2) N1 (water) = 1.33, N2 (quartz) = 1.46
(3) N1 (air) N2 = 1.00 (quartz) = 1.46
(4) N1 (air) N2 = 1.00 (water) = 1.33
(5) N1 (water) = 1.00 N2 (air) = 1.00
(6) N1 (benzene) = 1.50 N2 (water) = 1.33

* I know the amount of phase shift of the reflected beam is not proportional to the change in refractive index between the two materials.

Please help! Thanks in advance