A ray of light is incident on the surface of a glass plate at an angle of incidence equal to Brewster's angle ϕ . If μ represents the refractive index of glass with respect to air, then the angle between reflected and refracted rays is:
(a) 90+ϕ
(b) sin−1(μcosϕ)
(c) 90∘
(d) 90∘−sin−1(sinϕ/μ)