(c) A randomly polarised beam of light is incident on a polished floor at an angle away from the normal, and an observer is looking at the reflected light through a linear polariser oriented normally to the light beam. The refractive index of the polish n =1.45. (i) Sketch this situation and use your sketch to help describe how the intensity of the reflected light would change as the transmission axis of the polariser is rotated about the direction of propagation of the reflected light beam. At what orientation of the polariser will the minimum intensity occur? (ii) When the transmission axis of the polariser has a particular angle, the observer notes that the reflected beam is no longer visible. What are the incidence angle of the beam on the floor, and the orientation of the axis of the polariser, when this occurs