11.24: Two wave pulses trav biiy+ .s5dh0 fnuqj0tm( g)o*el to the right toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best represents thejib5(snq+y .df t0)ougm h i*0 superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air and/ bgt f/,ay/cr strikes the surface of a plastic block. Which pair of statements corrbfar/cgt,/y/ ectly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight/v;mz ,:yv nreih,8h g vp6a:f downward through the point labeled B in the diagram shown. The ray reaches a flat mirror placed at an az;f/a 6,rvyevig,hm :: v8hpnngle $\Theta$ to the horizontal as shown. Which one of the locations labeled in the figure best represents the point through which the ray reflected from the mirror will pass?

  00.04: Specular reflection occurxcyzondtm 78. 7tyy:+1+cooa0g q d.th0u q/js whenever light is incident on

  05.18: A student hold a hand mirror to observe the back of her head while stanhn jyq lcs(na(+0l7 w+ding in front of and looking into a wall mirror. If she is standing 4 ft in front of the wall mirror and she holds the hand mirror 1 ft behind her head, she wi( 7 sc+jy(a+lq0 nlwhnll see the back of her head how far behind the wall mirror?

  14.25: It is observed thn ms:o7b09uyq8b l j6hat a light ray changes direction when it enters a new material. Which one of the following choices is the term best associated witb :b0o96lq7umyns 8 hjh this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nmd) as0rgg7ar0 k x4nw6 in a transparent material. What is the index r 00s7ggnrk w6 )4xdaaof refraction of the material?

  98.04: As sound travels from steel into air, :ug,4v o-rs+umkf-qh k p9 0krboth its speed and its:

  00.01: As a wave moves from one mediu +:amc edelj/-m to a second medium with a different index of refraction wem+ -/:jdl eachich of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency travel*3m n1tyqu+k 5x. wukhs from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statement is true about the wavelength and frequency of the sound as it passemu k+3*wx.kny5hu1t qs from air to rock?

  14.28: A waterproof speaker placed at the bottom of a ,h85 dv b*mcyiswimming pool emits a sound wave that travely,hbd*mv 58ics toward the surface of the water. In the water, the sound wave has a frequency $f_{water}$, wavelength $\lambda_{water}$ , and wave speed $v_{water}$ . When the sound wave enters the air it has a frequency $f_{air}$ ,wavelength $\lambda_{air}$, and wave speed $v_{air}$ . Which one of the following relationships correctly compares the frequencies, wavelengths, and wave speeds of the waves in the air and water?

  02.33: A short burst of white light strikes a rectangular glass block wij1u6i,xqj- tc7i l )agth an angle of incidence of c-ilug,q7xij6 jta1 )$0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is direc qzmj,;w/-lwa ted toward a point P on a boundary as shown to the right. Which segment best represents the refracted ra ; m,wzwjl-a/qy?

  98.17: Which diagram best represents what happens to aaq()kf0zqmg)s *p 6zz ray of light entering aira6fqz pm0 )sz)(q k*zg from water? Air is at the top in all diagrams.

  94.11: The critical angleqk9o pvhiv.x ( u0sf*zmd:2d8 of a material is the angle of incidence for which the angle of refractiokfqu90z. : pvmdh 2ox8*dsi (vn is:

  95.12: The principle underlying ff: /,:zvnnc mvubh/t1k:e1teiber optics is:

  98.36: The critical angle in a transparent substro0*+0w 3wodx u:h oreance surrounded by air is $30^{\circ}$. The speed of light in
the substance (in multiples of $10^8$ m/s) is most nearly

  01.28: Light travels from material X with an indksv;vxd ;c7te :9- tssex of refraction of n = 1.5 to material Y with an index of refraction of n = 2.0. Ifs:ts7t c9-dvxe; ks; v the speed of light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diaae v8og n g6*-hx7eet4mond and a piece of glass by observing the critical angle oag6 e74 *-x evnh8tgeof the light in each material. Glass with an index of refraction of 1.52 has a critical angle of $41.1^{\circ}$ while a diamond with an index of refraction of 2.42 would have a critical angle of:

  05.26: Light shines from air into ag(12fz:irscb8ep:krb09lfwr1 u) tx clear material. When the light makes an angle of incidence equal to2cef b:g19:zfi )b8rplw1x (k u0r rst $30.0^{\circ}$, the light refracts at an angle of 1$5.0^{\circ}$. If the light is shone from an angle of incidence of $60.0^{\circ}$, what is the angle of refraction?

  95.40: A Metrologic laser is embedded in a material of wnr h 298tqvu9 index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of the laser and target. The value of n i9tuhn 298v wqrs:

  95.31: A beam of light passes from medium 1 to medium 2 to medium rr q y37)8 .pyylvm1gn3 as shown in the accompanying figure. What is true about the respective indices of refraqy8 m3y)rgpr7n yvl1.ction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medinlm 1lrp*ci tu*g,kfupmb;p 5hv4(-0 um 2 to medium 3 as shown in the diagram. What may be concluded about the three indexe 5bc(4h0v*,mplt *m-u;gknlpipf1urs of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the)5e 8ddb b*cw39qihpz path that a light ray takes passing through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, respectively. ez95 icd d*pb h83b)wqWhich of the following best describes the relation between the indices of refraction?

  09.34: The diagram below s 9cm41bh)a++peexfk lhows the path taken by a monochromatic light ray traveling thr1eb4 +lmcp)9a exf+hkough three media.The symbols $v_1$,$\lambda_1$ , and $f_1$ represent the speed, wavelength, and frequency of the light in Medium 1, respectively. Which of the following relationships for the light in the three media is true?

  99.26: A beam of light travelin :jz1c9u(sa4ly tky (rg in glass ($n_g$=1.5) strikes a boundary with air ($n_a$ =1.0) at point P.The angle
of incidence is $60^{\circ}$ as shown in the diagram. Which ray would best indicate the beam’s path after point P?

  04.35: A ray of light is incident on the surface of a xv(s(+.msed5etd) vx rectangular block of glass at an ant vv5xsdse+(dem .( x)gle of $45^{\circ}$. It refracts into the glass and then strikes the side of the block as shown in the diagram. What would be the most likely path of the light after striking the side of the glass block?

  13.27: Light of wavelength 600nromx1e.s306k5,nefk.gb6u r zyjyg;1sk (s mm is transmitted from air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after it enters the zgbkke.xmkor1ru5n(01 ;yg e j f,3s6. yms6sglass?

  14.44: A ray of monochromatic light enters the right-triangular glammbnnw /9q j+k- ;xq8ess as shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of the lettered rays shows the pa9/ wnkj-+q;eq8n b mxmth of the light after it exits the glass?