76 Go In Fig. 33-66, unpolarizedlight with an intensity of 25 W/m2 issent into a system of four polarizingsheets with polarizing directions atangles = 40°, 2 - 20°, 0 = 20°,and 04 = 30°. What is the intensity ofthe light that emerges from the system?Figure 33-65 Pr%3!-X-

The unpolarized light is transmitted, then the intensity is half the original intensity and…

Answered: 76 Go In Fig. 33-66, unpolarized light…

University Physics Volume 3

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Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter1: The Nature Of Light

Section: Chapter Questions

Problem 87AP: If a polarizing filter reduces the intensity of polarized light to 50.0% of its original value, by...

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In Figure P37.52, suppose the transmission axes of the left and right polarizing disks are perpendicular to each other. Also, let the center disk be rotated on the common axis with an angular speed . Show that if unpolarized light is incident on the left disk with an intensity Imax, the intensity of the beam emerging from the right disk is I=116Imax(1cos4t) This result means that the intensity of the emerging beam is modulated at a rate four times the rate of rotation of the center disk. Suggestion: Use the trigonometric identities cos2=12(1+cos2) and sin2=12(1cos2). Figure P37.52
A linearly polarized microwave of wavelength 1.50 cm is directed along the positive x axis. The electric field vector has a maximum value of 175 V/m and vibrates in the xy plane. Assuming the magnetic field component of the wave can be written in the form B = Bmax sin (kx t), give values for (a) Bmax, (b) k, and (c) .(d) Determine in which plane the magnetic field vector vibrates. (e) Calculate the average value of the Poynting vector for this wave. (f) If this wave were directed at normal incidence onto a perfectly reflecting sheet, what radiation pressure would it exert? (g) What acceleration would be imparted to a 500-g sheet (perfectly reflecting and at normal incidence) with dimensions of 1.00 m 0.750 m?
If a polarizing filter reduces the intensity of polarized light to 50.0% of its original value, by how much are the electric and magnetic fields reduced?
Two polarizing sheets P1 and P2 are placed together with their transmission axes oriented at an angle to each other. What is when only 25% of the maximum transmitted light intensity passes through them?
Three polarizing sheets are placed together such that the transmission axis of the second sheet is oriented at 25.0° to the axis of the first, whereas the transmission axis of the third sheet is oriented at 40.0° (in the same sense) to the axis of the first. What fraction of an intensity of an incident unpolarized beam is transmitted by the combination?
A nonpolarized light with an intensity of 3.0 W/m2 is incident on two polarizing filters whose transmission axes form an angle of 60O. What is the intensity of light transmitted through the second filter? 0.3 W/m2 0.575 W/m2 0.475 W/m2 0.4 W/m2
Three polarizers are arranged as shown in Figure 25-46. If theincident beam of light is unpolarized and has an intensity of1.60 W>m2, find the transmitted intensity (a) when u2 = 25.0°and u3 = 50.0°, and (b) when u2 = 50.0° and u3 = 25.0°
The average intensity of light emerging from a polarizing sheet is 0.789 W/m2, and that of the horizontally polarized light incident on the sheet is 0.865 W/m2. Determine the angle that the transmission axis of the polarizing sheet makes with the horizontal.
The minimum change in light intensity that is detectable by the human eye is about 1%. Light is sent through a pair of polarizers whose axes are at an angle of 45° to each other. By what angle should the second polarizer be turned so that the change in the intensity of the light that exists is barely perceptible?

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76 Go In Fig. 33-66, unpolarized light with an intensity of 25 W/m2 is sent into a system of four polarizing sheets with polarizing directions at angles = 40°, 2 - 20°, 0 = 20°, and 04 = 30°. What is the intensity of the light that emerges from the system? Figure 33-65 Pr %3! -X-