11.24: Two wave pulses travel tovr0uq/7 yf8*e*zf sc.q3bv rh the right toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the follof r*0usq*3. cvzr8vh b7/yeqfwing 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 surface of a plam3*q.sd0r.h d-pjou astic block. Whi-a rdo*qs 0hd3p.mj.u ch pair of statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downw/lb0el, m (y v9igec1xard through the point labeled B in the diagram shown. The ray reaches a flat mirror placed at an angxcge0,(b/i 1 evllm9yle $\Theta$ 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 incident on j/hvx y*:)dn3m + 2yo0gqkoax

  05.18: A student hold a hand mirror to observe the back of her head whilmy3b tea z8 1wev9v77ue standing7 e9tyawzbm v37uv1e 8 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 will see the back of her head how far behind the wall mirror?

  14.25: It is observed that a light ray changes directi9/ au3x(kye; nwa8phuon when it enters a new material. Which one of the folley9x8k/ (aw3paunh;uowing choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm ih4g)t m1 7+(gp udrtbun a transparent material. What is the index of refraction of the ma)b(td gp+g u14hrm 7utterial?

  98.04: As sound travels from steel into air, both its speed and fcx xn+, dfc*h,9f- nj4:zu;q n q-jtcqd3d)cits:

  00.01: As a wave moves from one medium to a second7l.k s.n spr.tfdf+xq- j4t* a medium with a different index7.kp dsf sqtfa*l4x tn-r+.j. of refraction which of the following wave properties would NEVER change?

  05.47: A sound wave ylb:jv +*ki+igenerated from a tuning fork of single frequency 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 as iibij+*k:+ vyl t passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming m y+vwviueln+9gu rp:9+ymguyu6 h0)v4ww0, pool emits a sound wave that travels toward the surface9 + ur4vl w+6gu,mgy+hyuwwnv 0p i)yvm9u:0e 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 strm )t71 5fo+0zuuwu ea hbqk30yj/mx*cikes a rectangular glass block with an angle of incid0*a j htu0bw3/+cy7qex5 zomu )1umfkence 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 tow 56o.syb. p)w mtg):j,s hulpward a point P on a boundary as shown to the right. Which segmenw6:,tolp.yjhwm gss5)pbu . )t best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light /4etbf ncm m wy3o3 jw/je:20sentering air from water? Air is at the top in all diagrams.otm j0 s:jf /3bm23e4wcwye/n

  94.11: The critical angle of a material is the angle of iu.tu aa4/si vy esx*0;ncidence for which the anx/asiy4. u* uve; sa0tgle of refraction is:

  95.12: The principle un1w-mf4uacf ,p7cu n c4derlying fiber optics is:

  98.36: The critical angle in a transparent sw7t * s4csfi5jubstance 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 refraction of n = 1.5 to 3 mx tr41;;h sl;otx aymk-*zumaterial Y with an index of refraction of n = 2.0. If the speed of light in materi1a tt4xuh*; o r ;zxy;3lmksm-al Y is v, what is the speed of light in material X?

  03.15: A jeweler can dist-r wz(jfh;cwhnv12k zh153 +8hl dcnvinguish between a diamond and a piece of glass by observing the critical angle of the light in each material. Glacz(52d h;3hvcv1n nwjwr8hf1l-z+kh ss 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 mate92fkvlp(d(aie(c6 v 0n ww e9arial. When the light makes an angle of inwneecv2wk v(i 960 a(ad (lfp9cidence 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 is embedded in a material of / xc-,2wm6u vfmni *prindex of refraction n. The laser beam emerges from the material-vmn* i rpuxm6w2 f,/c 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 light passes from med.rlkx/qnw g1 8ium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true abou x 8.rlwgn/k1qt the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as shown st/kst 9euz:j/rt-d5.e ho .8ioh/nj in the diagram. What may be coni./ 8-zh 5soht//rjd: t j etku9os.encluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the p.:s bvtsn55jeath 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. Which of the following best desnvs5ebt: 5js. cribes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochrog:sj)aemg(*:s :v *pqx3 lu lsxuax.0matic light ray traveling through three media.The sym0 j*:auv3uxles*apm::x( gl gsq)x.sbols $v_1$,$\lambda_1$ , 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 travhj39/0 xnsu; w* t-etwyk3nu v;sy xx9eling 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 sure2tz lb6t2pgb7g diar/.x0 +xface of a rectangular block of glassxzr6b+pe7 g/t2ladi0 txb .2g at an 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 transmittl(bvah)r qu sh jm)- 6l6o o:i6ma6*mzed 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 gla:*u haa6hvim z6 jo)-mo l)b(rm6qs 6lss?

  14.44: A ray of monochromatic light enters the right-triangular glass as shown.-db)i* ku*pxh The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of the lex) ph**kib-d uttered rays shows the path of the light after it exits the glass?