11.24: Two wave pulses travel to the right m:xpt kx3cg5)qwz)y 2toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best represents the superposition of the pulses when the 32))cy:q5xtx m zkwgpcenters of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes the surface of a plavb3.a+ r vx t0+tuyh9kstic block. Which pair of statements correctly describes the phase changes for the reflectyb9akt++hx t vr3uv0. ed wave and the transmitted wave?

  12.02: A ray of light passes str;edoc o+q* u+raight downward through the point labeled B in the diagram shown. The rar+ dqou*;c+eoy reaches a flat mirror placed at an angle $\Theta$ 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 occurs whenever light is inmuz+au/4/of tn d9ad vn9e76e cident on

  05.18: A student hold a hand mir;7, 0zz avkzsnror to observe the back of her head while standing in front of and looking into a wall mirror. If she is standing 4 ft k z; na7v,zsz0in front of the wall mirror and she holds the hand mirror 1 ft behind her head, she will see the back of her head how far behind the wall mirror?

  14.25: It is observed that a light ray changes dia:j h,l:3 q g7wp;qlwirection when it enters a new material. Which one of the following choi: gia;,p hlq3l7ww:jq ces is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 40lzvr 196. qhph0 nm in a tranzrl 91p.qhh 6vsparent material. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, both its speed and u8sg/bti*b w3 olqd35 its:

  00.01: As a wave moves from one medium to a second medium with a diffet(./iz)q6eyqx/bk earent index of refraction which of the following wave properties woul ie t(/bxzyq)/.aeq6 kd NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency travels fr. wii9dw*c+u*f9/ wgvfvcey2 om 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 pass*cw2g+i .*fy c/fuiwe9wd9v ves from air to rock?

  14.28: A waterproof speaker p h(dqgt;t pfe) af-j14(mqug k 0yb/-m53i aqzlaced at the bottom of a swimming pool emits a sound wave that travelsfm1dpu-qqe; z higt/(3 m0(4qa-)jy 5gtfbak 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, 3f.v4wog6(z zjkd5t6jlb w x of white light strikes a rectangular glass block with an angle of i6(xzv,.olk bjj4 6 f w5dwzg3tncidence of $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is directed pj-0ey i6 9wrt2taw.gtoward a point P on a boundary as shown to the right. Which segm2r0w9 t eitw6gjyp. -aent best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light entering ai.4br5g dapnq( r from water? Air is at the top in all diagrams. g5ab r(pqnd4.

  94.11: The critical angq*;*g,erb wzn ,rs ,u j8ex0;y+g3rzn ghkd)yle of a material is the angle of incidence for which the angle of refraction ikgy,x)e0,n z,; dr *e;ugyznw brgs3j h+rq*8s:

  95.12: The principle unf2wssns 2r/s .u-r:ggderlying fiber optics is:

  98.36: The critical angyle/lu06 3j 9k qgh6mkle in a transparent substance 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 o4ds41,2 *hkywu4s ik xiyly7from material X with an index of refraction of n = 1.5 to materia4x1w4 yd2 si,7k yskilo4uyh* l Y with an index of refraction of n = 2.0. If the speed of light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish3 l,eea, 6di2ii5vefm between a diamond and a piece of glass by observing the critical angle of the v3ie2l e,6ima e5 idf,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 a clear ma 0pi8;r-6 dfentqb nl:terial. When the light makes an angle of incidence i;tnplbe d6: 8nrqf 0-equal to $30.0^{\circ}$, 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 le+, /52jr riqge-i h60pr cjjplfc4j+aser is embedded in a material of index of refraction n. The laser beam emerges from the materpqiji++j,elc-rg2jj h r0 pr/ f46ec 5ial and hits a target. See the accompanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light8xe 3 dsnv6olzm/ c-s- passes from medium 1 to medium 2 to medium 3 as shown in thes-/x8l-on6 me3 zcd sv accompanying figure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes 53g1omxd 6r+5lqxq+9a py i7stw vra/ from medium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refraction, n1, n2 and n9 5lvptaxg/6s 3m+ r5ydarq17+iwqo x3?

  97.24: The accompanying diagram shows the path that a lighty.uf17yh3wv6/ qisbe ray takes passing through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, respectively. Which of the following best describes the relation between tw seyyvb3q71.f /u i6hhe indices of refraction?

  09.34: The diagram below shows the path taken by a monow*xrog3d79y v chromatic light ray traveling through thrgd wxry*o3 7v9ee 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 traveling in glass (a h5+ lwzpa:(/xy1 njg$n_g$=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 surfacez izh;,(,tw hvwrirp/h 75 *ij of a rectangular block of glass at an ang7 hzvi,hrzr/ ,h;p(wt 5w jii*le 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 600nm is transmitted from a6ra6oilixi8e-lw e1 ;ir into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after it en6woa;e8rx6- ile1lii ters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass as show xlc5mn .fsqdq334 btv.mvh 9+n. The glass has an index of refraction of 2.00 and it is .l5hs43xm3c v9q bdmn v.qf+ tsurrounded by air. Which one of the lettered rays shows the path of the light after it exits the glass?