Brew(ma)ster. Unpolarized light propagating in oil (noil = 1.30) is incident on a sheet of glass as shown in the figure. If the reflected light is 100% polarized, what is the index of refraction of the glass, and what is the polarization direction of the reflected light with respect to the interface of the oil and the glass? oil 40° glass 13 OA. 1.09; reflected light is polarized perpendicular to the interface. OB. 1.09; reflected light is polarized parallel to the interface. O C. 1.55; reflected light is polarized perpendicular to the interface. OD. 1.55; reflected light is polarized parallel to the interface.

13. 14. Consider the following properties of light: rectilinear propagation reflection refraction diffraction I. II. III. IV. V. partial reflection-refraction Which of these properties did Huygens have trouble explaining with his theory of light? I only IV only I and IV only I and V only a. b. C. d. Monochromatic light coming from the left passes through a slit S and then falls on a metal sheet with two slits B and C as shown below. The slits are the same width. The light then falls on a screen. S | 5.0 m C .0 mm (a) 1.5 x 10-5 cm (e) 15 x 10-5 cm -10.0 m- The intensity pattern shown below is centred at P. 0 3 Distance (cm) The wavelength of the light is closest to (b) 4.5 x 10-5 cm P (c) 5.0 x 105 cm (d) 7.5 x 10-5 cm

1. Horizontally polarized light is incident on a polarizing filter with an axis of polarization that makes an angle of 32° with the vertical. a. What percentage of the incident light is blocked by the polarizer? b. What angle should the polarizer make with the vertical to block exactly half of the incident light?

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