11.24: Two wave pulses travel to the right j::b)xi ;+fusqw a:b:f e8qs rtoward a rigid boundary as shown. After reflection of the triangular;:j:)q +i:8xfas fu qwerb:sb pulse, the pulses will interfere. Which one of the 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 aix231 d xj(wigpdl-:mxr and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changes for x32xdmp-:xjgw1i (d lthe reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point labeled B iruer/ 4e09 z,1vhavv vn the diagram shown1havr 4e evv,/0ru9 vz. The ray 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 ihgm)8p9: )moqai rxdw 6 .w8kcs incident on

  05.18: A student hold a hand mirror to observe the baapcjaz-t s0//ck of her head while standing 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 headajcastp/ z/-0, she will see the back of her head how far behind the wall mirror?

  14.25: It is observed that a light ray changes dir; ld,*lcs: npuvpo*m /1 b5vcoection when it enters a new material. Which one of the following choices is the term best associated with thiu *s5 mol1p ,lbvc*c:nd;pv/ os phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavgwxwgz/bn 21xs(w :tifwl)(05 a3u rtelength 400 nm in a transparent material. What is the index of refraction of the r2(txl /u st13 :5w wib(gng f)0axwzwmaterial?

  98.04: As sound travels from s a (6ro fgfe0hriw5lon0(e d1p* o4bq,teel into air, both its speed and its:

  00.01: As a wave moves from one medium to a second medium with a differe; hmdb49qf ncfh4or82 nt index of refraction which of the following wd;brf4h4of9 cm2nh8qave properties would NEVER change?

  05.47: A sound wave generated from a tuning q yuqy:a0rj 3/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 waveaq3y j0 qy:/urlength and frequency of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming pool y 0zrj58 bgj3 rzm wh27dwk/m: 8y/jmcemits a sound wave that travels toward the surface of/r085 yzm m2 w/7ckr:mjhy dz8wgbjj3 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 wloo/cln +lp+q, k 0kj rnd)-7 rvu3t)hith an anglr ,+k puj/cdll)h0l7k+ v3o no-tn) qre of 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 toward a+9 v lxhjl0jt* point P on a boundary as shown to the right. Which segment best represe+9*v0 lxthj jlnts the refracted ray?

  98.17: Which diagram best represents what happens to a ray of l/7kll. ylp1 swihfg (1ight entering air from water? Air is al. w/ilp1(fk s71lghy t the top in all diagrams.

  94.11: The critical angle of a.; 7no/ex qrvq material is the angle of incidence for which the angle of refr7 ;eoq./r vxqnaction is:

  95.12: The principle underlying fiber optics is0ee ):m;vc iv; rgmxmum a xcm1*3*ut/:

  98.36: The critical angle in a transparent subsx85 xf gs7g5(bpzy : wfhf;7mmtance 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 ind63lvpev5ab2 v 4. jeqzex of refraction of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of light in material Y is v, what is thvzv e2lvbaqj p 4e5.63e speed of light in material X?

  03.15: A jeweler can distinguish between a diamond and aqx-gw. cfk 30w piece of glass by observing the critical angle of th -fqxk0wc3 w.ge 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 inn10hug94d ; g+bcc; v-usiozcto a clear material. When the light makes an angle of incid4c hu;d09u;o1+gscg bniz c-vence 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 ify )wm6lzu i:rnd-h8;n a material of index of refraction n. The laser beam emerges from the material and hits ahy6m; )fr dzluwn-8 i: 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 medium 1 to medium u: vs9gcbnj+h5 f *9hfn5-vkb 2 to medium 3 as shown in the accompanying figure. What is gsb5 jn95kf:n 9fv-bvc+ h u*htrue about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes fromw lerw+ ya2y1:*aff* ww 1tbg7 medium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three ind1yylwwag12 ewr+ t:f7 *af*bwexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes pz1qt fn(*k vb.assing 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 the zb* n fvt.(q1kindices of refraction?

  09.34: The diagram below shows lti79sfqr1 7gq k 1a5vthe path taken by a monochromatic light ray travefqq7 5k v9 garits171lling through 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 traveling i(rr)m48d menmmq2 pzqr o84y.n 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 vr4eb lwkpa 2x95uman9os(+ +is incident on the surface of a rectangular block of glass x(aals w95++92nebr m 4kvop uat 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 transmitted from air into a piecsfu,awl vs :pd cx5qy7+-)4ixe of glass. Which one of the labeled arrows best indicatess +) i7vl4x5d,xq wf:- ayscup the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular w o3ryrs09ho 8glass as shown. The glass has an index of refraction of 2.00 and it is surrounded byh3yo srwr980o air. Which one of the lettered rays shows the path of the light after it exits the glass?