# *38 O In Fig. 33-42, unpolarized light is sent into a system of three polarizing sheets. The angles 6, 02, and 0; of the polarizing directions are measured counterclockwise from the positive di- rection of the y axis (they are not drawn to scale). Angles 6, and 0z are fixed, but angle 6, can be varied. Figure 33-43 gives the intensity of the light emerging from sheet 3 as a function of 6. (The scale of the intensity axis is not indicated.) What percentage of the light's initial intensity is transmitted by the system when 02 = 30°? -x- Figure 33-42 Problems 38,40, 0° 90° 180° and 44. Figure 33-43 Problem 38.

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### Electromagnetic Waves

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*38 O In Fig. 33-42, unpolarized light is sent into a system of three polarizing sheets. The angles 6, 02, and 0; of the polarizing directions are measured counterclockwise from the positive di- rection of the y axis (they are not drawn to scale). Angles 6, and 0z are fixed, but angle 6, can be varied. Figure 33-43 gives the intensity of the light emerging from sheet 3 as a function of 6. (The scale of the intensity axis is not indicated.) What percentage of the light's initial intensity is transmitted by the system when 02 = 30°? -x- Figure 33-42 Problems 38,40, 0° 90° 180° and 44. Figure 33-43 Problem 38.