Question

1. Natural light of intensity I, is incident on a set of polarizing filters as shown. What are the intensities, in terms of le, at locations A, B, and C? Unpolarized 2. The cover art of the album Dark Side of the Moon, by the band Pink Floyd, is shown below. The cover art shows a single ray of natural light entering a prism with an incident angle of a = 45° and then spreading out into a fan that spans an angular range of roughly 25° inside the prism. (a) If the prism is made of BK-7 glass, which has index of refraction values of n = 1.530 at 1 = 410 nm and n = 1.513 at 1 = 700 nm, calculate the actual angular range of the light inside the prism. (b) Describe at least three discrepancies of the cover art with the actual dispersion of light by a prism.

Answer 1

ONE QUESTION AT A TIME ...................PLEASE ABIDE BY THE RULES

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1) At point A,

the intensity of light will decrease by half,

so,

I = I_o / 2

At point B

Using Malus' law

I = (I_o / 2) cos ² 60

I = 0.125 I_o

At point C

I = ( 0.125 I_o ) cos ² 30

I = 0.09375 I_o