Question

Questions 1. If an unpolarized light passes through an ideal Polaroid filter, what percent of the light is transmitted? 2 Unpolarized light with intensity I, is incident on a Polaroid, and the emerging light strikes a second Polaroid with its axis at 60 to that of the first. Determine the intensity of the light after it has passed through the second Polaroid What is Brewster's angle when the light in the air is reflected off a surface of a lake? The critical angle for a light at an interface between certain substances is 55°. What is the polarizing angle (Brewster's angle)? Some types of glass have a range of indices of refraction of about 1.4 to 1.8. What is the range of the polarizing angle for these glasses? 3. 4. 5.

Answer 1

I_transmitted = I_0 times 0.5 50% I = I_0/2 times cos^2 60 I = 0.125 I_0