Reading Assignment Polarization and Dispersion

11/16/23, 6:29 PM Started on State Completed on Time taken Marks Grade Question 1 Correct Mark 0.50 out of 1.00 Which of the following statements about a beam of linearly polarized light are true? Select one; Reading Assignment 9: Polarization and Dispersion: Attempt review Tuesday, 10 November 2020, 4:54 PM Finished Wednesday, 11 November 2020, 9:16 PM 1 day 4 hours 6.00/7.00 85.71 out of 100.00 The magnetic field is perpendicular to both the electric field and the direction of the polarization. The magnetic field is perpendicular to the electric field but parallel to the direction of the polarization. The magnetic field is parallel to the electric field but perpendicular to the direction of the polarization. The magnetic field is parallel to the electric field and parallel to the direction of the polarization. The magnetic field is perpendicular to the electric field but its angle to the direction of polarization depends on the polarization state chosen. cross out The correct answer is: The magnetic field is perpendicular to both the electric field and the direction of the polarization. Marks for this submission: 1.00/1.00. Accounting for previous tries, this gives 0.50/1.00. https://eclass.srv.ualberta.ca/mod/quiz/review.php?attempt=6451678&cmid=4375410 « Correct, well done! cross out Ccross out cross out cross out 1/7

11/16/23, 6:29 PM Reading Assignment 9: Polarization and Dispersion: Attempt review Question 2 Correct Mark 1.00 out of 1.00 A beam of unpolarized light has initial intensity 5. When the beam is incident upon a polarizing filter, what is the intensity of the transmitted light after passing through the filter? Select one: lo cross out (0.75) Iy cross out (0.50) Ig cross out (0.25) Iy cross out Zero; no light is transmitted cross out The intensity of transmitted light depends on the orientation of Cross out ¢ the polarizing filter Your answer is correct. Unpolarized light consists of all angles of polarization equally. Since the intensity of the light goes as the square of the cosine of the angle between the light and the polarizer we need to know the average value of cosine squared between 0 and 360 degrees. This is just a half so the intensity is half what it was before. The correct answers are: (0.50) Iy, The intensity of transmitted light depends on the orientation of the polarizing filter Marks for this submission: 1.00/1.00. https://eclass.srv.ualberta.ca/mod/quiz/review.php?attempt=6451678&cmid=4375410 2/7

11/16/23, 6:29 PM Reading Assignment 9: Polarization and Dispersion: Attempt review Question 4 Correct Mark 1.00 out of 1.00 Unpolarized light travelling through medium A encounters an interface with medium B. The two media have different indices of refraction np and ng. Polarization by reflection from the interface could possibly occur... (Select the best answer to complete the sentence.) Select one: only if na > ng only if ny < ng for any contrasting values of np and ng, as long as they are different. only if medium B is transparent onIy if Na = N Your answer is correct. The correct answer is: for any contrasting values of ny and ng, as long as they are different. Marks for this submission: 1.00/1.00. https://eclass.srv.ualberta.ca/mod/quiz/review.php?attempt=6451678&cmid=4375410 cross out Ccross out Cross out ¢ Ccross out cross out 4/7

11/16/23, 6:29 PM Reading Assignment 9: Polarization and Dispersion: Attempt review Question 5 Correct Mark 1.00 out of 1.00 When light is incident upon the interface between two refractive media such that the angle of incidence is equal to Brewster's angle... Select the true statement (s). Caution: The question may have more than one correct answer and all true statements must be selected to get a mark. Select all that apply: all of the light reflected, and no light is transmitted into the second medium all of the light is transmitted into the second medium, and no light is reflected the reflected light is unpolarized the reflected light is partially polarized the reflected light is completely polarized the transmitted light is unpolarized the transmitted light is partially polarized the transmitted light is completely polarized Your answer is correct. The correct answers are: the reflected light is completely polarized, the transmitted light is partially polarized Marks for this submission: 1.00/1.00. Question 6 Correct Mark 0.50 out of 1.00 In the vast majority of transparent media, the index of refraction... Caution: this question may have more than one correct answer Select all that apply: increases as the wavelength of light increases decreases as the wavelength of the light increases increases as the frequency of the light increases decreases as the frequency of the light increases is constant for all wavelengths and frequencies of visible light Your answer is correct. The correct answers are: decreases as the wavelength of the light increases, increases as the frequency of the light increases Marks for this submission: 1.00/1.00. Accounting for previous tries, this gives 0.50/1.00. https://eclass.srv.ualberta.ca/mod/quiz/review.php?attempt=6451678&cmid=4375410 cross out Ccross out cross out Ccross out Cross out cross out Cross out cross out cross out Cross out ¢ Cross out ¢ Ccross out Ccross out 5/7

11/16/23, 6:29 PM Reading Assignment 9: Polarization and Dispersion: Attempt review Question 8 Complete Not graded Which topics or concepts in this part of light waves did you have the most trouble understanding? [Answering this question is optional and does not count towards your assignment mark.] https://eclass.srv.ualberta.ca/mod/quiz/review.php?attempt=6451678&cmid=4375410 77