HW12B_Sol_22_F11

# HW12B_Sol_22_F11 - ORANGE COUNTRY Phys 2114 1. ix.) 3....

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Unformatted text preview: ORANGE COUNTRY Phys 2114 1. ix.) 3. <6? @ gs} BI’C—‘W—D’ Gamer. COMB-'1’ Fall 2011 HOMEVVORK Set 12 Instructor: Professor Bandy a. If your height is 165.0 cm (eyes to toes), what is the shortest mirroi on the wall in which you can see your full image? Where must the top of the mirror be hung? b. If you are standing 200 cm in front of a tall mirror, how far is it from your eyes to the image of your toes? c. A light ray leaves point A in Fig. 1, reﬂects from the mirror, and reaches point B. How far below the top edge does the ray strike the mirror? A 1.0—cm—thick layer of water stands on a horizontal slab of glass. light ray in the air is incident on the water 60‘" from the normal. What is the ray’s direction of travel in the glass? b. A laser beam in air is incident on a liquid at an angle of 37° Wit the normal. The laser beam’s angle in the liquid is 2’6". What is the liquid’s index of refraction? :3. Calculate the critical angle for total internal reﬂection in pdlystyrene (n=l.59) and ruﬁle (n = 2.62) from a laser beam incident on the air boundary. b. A drop of water is trapped in a block of ice. Calculate the critical angle for total internal reﬂection at the water—ice (11m, = 1.309) interface. a. A sheet of glass has ﬁred = 1.52 and raw-0M = 1.55. A narrow beam of white light is incident on the glass at 5’0". Calculate the angular spread of the light inside the glass, ilAa = 69m, — 8mm . b. A narrow beam of white light is incident on a sheet of quartz. The beam disperses in the quartz, with red light (it "—- 700Hm) traveling at an angle of 26. 3" wrl the normal (it 1.45) and violet light (A = 400nm)traveling at 25. 7". Find the index of reﬂection of quartz for violet light. Is it different from part a? \ Use ray tracing to determine the location of the image of each lens, parts a and b. Is the image upright or inverted? Object is upright and has a height of 2.5 cm. Calculate to' check your answer. a. An object is 5 cm in front of a converging lens with a focal length of 2.5 cm. '1' An object is 7.5 cm in front of a diverging lens with a focal length of 25.0 cm. From Figs. 2, find the focal length of the a. glass convex lens and h.i polystyrene plastic planoconvex lens and c. glass diverging symmetric lens. A ﬁsh lives in a 50-cm-diameter spherical ﬁsh bowl. The ﬁsh sees a cat watching it. If the cat’s face is 20 cm from the edge of the bowl, how far from the edge does the ﬁsh see it as being? 4 A 6. 0-cm-diameter zircon sphere (n = 1.96) has an air bubble exactly in the center. As you look into the sphere, how far beneath the surface does the bubble appear to be? 15cm Mirror Figure 21a, b, and c Figure 1 '3’: ﬂ! =—.- Itch; k 74 1.9652607 in?) L (um (em-«1’ {ifgﬁldﬂﬁm g 71-ng 9% ,_ -‘ l5 h n x.» on:- /A-3 :3 it; I- ﬂiﬁﬁ'w mi} {mg l“ BubbLﬁ. my“; \$5.; "a fig 5 cm. {Egg/dcfm-r"?{ r...r 7- _-- {4,1199 4 SURFACE ACTLJALLU A-;0Pé7r4;~155"'r"<i“ a ...
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## This note was uploaded on 01/10/2012 for the course PHYS 2114 taught by Professor Bandy during the Spring '08 term at Oklahoma State.

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HW12B_Sol_22_F11 - ORANGE COUNTRY Phys 2114 1. ix.) 3....

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