11.24: Two wave pulses travel to the right toward a rigid boundary as show(:fwhj3pns -pnexq0 bq9 3o5on. After reflection of the triangular pulse, the pulses will interfere. Which one of th nw93 o3p5n0-xh jq: bqfpe(ose following pictures best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes the z som7z/g*av/iz 38sv surface of a plastic block. Which pair ofv/8iz/v7*z gszo3 ms a statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passeu2) pw5(7p -mwvefqnbs straight downward through the point labeled B in the diagram shown. The ray reaches a flat mirror placed at n) e2bpwqpv f7(u-mw5an 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 whe-ii7c* z2y st4,zuimznever light is incident on

  05.18: A student hold a hand mirror to observe the back of her head wh 5m1a gau o(v*ijsqn91zgd6/ tile standing in front of anva/ 6 1tm1d 5ja*qgusi9zon(g d 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 will see the back of her head how far behind the wall mirror?

  14.25: It is observed that a light ray cha 4cvv(ss ,2uponges direction when it enters a new material. Which one of the following ch o2 s(svvc4pu,oices is the term best associated with this phenomenon?

  96.19: Light that has way ,2 j wqn+j7(8bpzq e.w8ump-xacu7u velength of 500 nm in air has wavelength 400 nm in a transparent material. What is the index of refraction of the .q(a-b cjn87u8,j 7myup q2w ze+upwxmaterial?

  98.04: As sound travels from steel into ai(. ; yobmidv b-7bbzk/r, both its speed and its:

  00.01: As a wave moves fromw y3f1vm*q:0w hmfv*y uqen;+ one medium to a second medium with a different index of refraction which of the following wave properties would NEVER changwn+h1* yuw:fme3*mv;vfq y q0e?

  05.47: A sound wave generated from a tuning fork of single frequky r3bxy53db 29nteo, ency travels 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 asnb3yr32 5e xtykd 9,ob it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming poolfv j k)5nfej96 emits a sound wave that travels toward the surface of th5)fnk e jjf69ve 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 strike woc(w )4lae75ggmds 1s a rectangular glass block with an angle og ) 5 4w7d(cge1omlswaf incidence 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 fccyg uftwip hx u9(6 6r7zjc+d34;: ktoward a point P on a boundary as shown to the right. Which segment best represents the refractei6 ccp+z9;tk u fuj ywdf6c(x47hg:r3d ray?

  98.17: Which diagram best represents what happens to a ex,i0y 96zfyvray of light entering air from water? Air is at ,yvy90zfi 6 xethe top in all diagrams.

  94.11: The critical angle of a material is the angle of incidence for which dz*kb9(-ba) v .hrbkw,q1 wtn the angle ob.zbvr(, k)9- n*w dbkqah1wtf refraction is:

  95.12: The principle underlyiha9 mnue 6i6 tr8fc;3wng fiber optics is:

  98.36: The critical angle in a transparent substae sx4(wl o;1m5g(oin mnce 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 index of refra8gy jfcv/nr(tb/v k+;ction of n = 1.5 to material Y with an index of refracnfk;y c g/bj (vv+rt8/tion 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 distinguish between a diamond -8ncw no1yyo7 v3+isi and a piece of glass by observing the critical angle of the light in each material. Glass with an index of refraction of 1.52 n sw7ni3o8oc1y-yv+ ihas 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 waljc3an+44;e ht2 re into a clear material. When the light makes an angle of inw;c4l 4 naet2eha 3jr+cidence 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 laser ise e2edeh *t+fy)(ppt2 fqlx3p7l-h8 c embedded in a material of index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying figure for the posit3lxce8*e tf )tqh2+7 pd 2p(lfpe-y ehion parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from medium 1 tobmxz tn,bg5 o3+ g5ww. medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective inwbo5 wb ,t3g+5gxmnz.dices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 tong+eb *ec-k)d 1c xkn9 medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refractioen1c nxdc 9*bkgk- e+)n, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray t6-ojh ioce5c3ln72 vp akes 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 tnho2 o v37c6cejil5-phe relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochromatic ligsjxh.3r)son 3p y :3;byh,mvqht ray traveling through th; y3 y)b3 xs hv,hjrmn.o:3pqsree 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 inbk /; zchr m6w,*cs;ct 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 incid (u* ;mzdhoqg4ent on the surface of a rectangular block of glass at d4mq;ou h (*zgan angle 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 air iy1i mtoo9q 3 *tn/os-vv42fixnto a piece of glass. Which one of the labeled arrows best indicaonv/3fi-vy*i mt9x2q1t4soo tes the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right l u8qz+-bqu8z-triangular glass as shown. The glass 88 z +qzqubu-lhas an index of refraction of 2.00 and it is surrounded by air. Which one of the lettered rays shows the path of the light after it exits the glass?