Light of original intensity I0 passes through two ideal polarizing filters having their polarizing axes oriented as shown in Figure 23 58. You want to adjust the angle φ so that the intensity at point P is equal to I0/10 (a) If the original light is unpolarized, what should φ be? (b) If the original light is linearly polarized in the same direction as the polarizing axis of the first polarizer the light reaches, what should φ be?
Figure 23.58
Problem 56.
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