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Total internal reection: The speed of light in a material is 0.35c. What is the critical angle of a light ray in degrees at the interface between the material and a vacuum? (keep 2 sig gs please) The critical angle for an air-glass interface is 291. When a light ray in air is incident on the interface, the reected ray is 100% polarized. What is the angle of refraction of that ray in degrees? (numerical answer only with 3 sig gs please) A ray of light consisting of blue light (wavelength 480 nm) and red light (wavelength 670 nm) is incident on a thick piece of glass at 80. What is the angular separation between the refracted red and refracted blue beams while they are in the glass? (The respective indices of refraction for the blue light and the red light are 1.4636 and 1.4561.) O 027" 0 033 0 036 O 046" 0 054