1.Brewster's angle:The Fresnel's equations eqs 1-4 tell us the variation of amplitude coefficient fro reflected and the transmitted ray for the given interface. The amplitude reflection Coefficient for the air –glass interface as a function of angle of incidence is shown in fig 3(a) for both the s polarized (perpendicular component) as well as p polarized (parallel component) wave. The corresponding reflectivity is shown in fig 3(b). Here air is taken as the first medium with refractive index n 1 =1 and the glass as the second medium having refractive index n = 1.5 .

                         Fig 3. (a) Variation of amplitude coefficient of reflection as a function of    
                                   (b) Reflectivity vs. a function of angle of incidence plotted.