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Chapter 33: Q47P (page 1004)
Light in a vacuum is incident on the surface of a glass slab. In the vacuum, the beam makes an angle ofwith the normal to the surface, while in the glass it makes an angle ofwith the normal. What is the index of refraction of the glass?
The refractive index of glass is .
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(a) Figure 33-27 shows light reaching a polarizing sheet whose polarizing direction is parallel to a y axis. We shall rotate the sheet 40掳 clockwise about the light鈥檚 indicated line of travel. During this rotation, does the fraction of the initial light intensity passed by the sheet increase, decrease, or remain the same if the light is (a) initially unpolarized, (b) initially polarized parallel to the x axis, and (c) initially polarized parallel to the y axis?
In Fig. 33-78, where , ,and,light refracts from material 1 into material 2. If it is incident at point A at the critical angle for the interface between materials 2 and 3, what are (a) the angle of refraction at pointBand (b) the initialangle?If, instead, light is incident atBat the critical angle for the interface between materials 2 and 3, what are (c) the angle of refraction at pointAand (d) the initial angle? If, instead of all that, light is incident at point Aat Brewster鈥檚 angle for the interface between materials 2 and 3, what are (e) the angle of refraction at point B and (f) the initialangle?
A beam of polarized light is sent into a system of two polarizing sheets. Relative to the polarization direction of that incident light, the polarizing directions of the sheets are at angles for the first sheet and for the second sheet. If of the incident intensity is transmitted by the two sheets, what is ?
About how far apart must you hold your hands for them to be separated by (the distance light travels in)?
Figure 33-31 shows the multiple reflections of a light ray along a glass corridor where the walls are either parallel or perpendicular to one another. If the angle of incidence at point a is, what are the angles of reflection of the light ray at points b, c, d, e, and f?
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