(a) Figure 33-27 shows light reaching a polarizing sheet

Chapter , Problem 3

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(a) Figure 33-27 shows light reaching a polarizing sheet whose polarizing direction is parallel to a y axis. We shall rotate the sheet 400 clockwise about the light's indicated line of travel. During this rotation, does the fraction of the initial light intensity passed by the Fig. 33-27 Question 3. Reflection and Refraction When a light ray encounters a boundary between two transparent media, a reflected ray and a refracted ray generally appear. Both rays remain in the plane of incidence. The angle of reflection is equal to the angle of incidence, and the angle of refraction is related to the angle of incidence by Snell's law, (refraction) , (33-40) where n) and n2 are the indexes of refraction of the media in which the incident and refracted rays travel. Total Internal Reflection A wave encountering a boundary across which the index of refraction decreases will experience total internal reflection if the angle of incidence exceeds a critical angle Be, where (critical angle). (33-45) Polarization by Reflection A reflected wave will be fully polarized, with its E vectors perpendicular to the plane of incidence, if it strikes a boundary at the Brewster angle BB, where (Brewster angle). (33-49) sheet increase, decrease, or remain the same if the light is (a) initially unpolarized, (b) initially polarized parallel to the x axis, and ( c) initially polarized parallel to the y axis?