11.24: Two wave pulses travel to the right toward a rigid boundary asdnn uf .zruz*.7bsn4bt9 -o,m 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 centers of 4btunu-7 ,fzrmods .*.z 9nnb the individual pulses coincide?

  08.30: A light beam passes through the air and o y,r,f55b*lh6uxu dlstrikes the surface of a plastic block. Which pair of statements correctly describes the phase changes for the reflec lrhyulx* 565,ubo, fdted wave and the transmitted wave?

  12.02: A ray of light passes straight downward thc kfiraei6jz;)a2e,+rough the point labeled B in the diagram shown. The ray reaches a flat mirror placed i), jfaeik6z rec2+a; 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 vz j5q7irar+7incident on

  05.18: A student hold a hand mirror to observe the bacq*mh46b b,yxt9 6l y6nsbef3lk 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 ftb6b6m , *y9es4nx yl6lbtfqh3 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 direction when it ena(hy bhz *,r(sters a new materia h*,zy(( bahsrl. Which one of the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength o+bmdy) 1m (ele3tj0b:zs3awtnrb *l4f 500 nm in air has wavelength 400 nm in a transparent material. What is the index of refraction of3rj bzetm+31esd0)ml at(4 * lnbb:wy the material?

  98.04: As sound travels from steel into air, both its speed and its:i9 fu -j9l4gdfgt(7 *bg+ji fz

  00.01: As a wave moves from one medium to evw0cvth gv ,-w 8,2tca second medium with a different index of refraction which of the fow,cev v8vcg0t2h,tw- llowing wave properties would NEVER change?

  05.47: A sound wave e t 0:wiq8drd g6o6nf(generated 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 it passes :o8 f 06(rgid dqnw6etfrom air to rock?

  14.28: A waterproof speaker placed at the 4e p 74tj6jonrbottom of a swimming pool emits a sound wave that travels toward the surface of the water. In tep4j n7r jt4o6he 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 stri/ ,yd lxbc9: 0/tcjucrkes a rectangular glass block with an angle of incidence of,/bc l:r/utdy0cj9 cx $0^0$. 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 point P oni:0u m hqa4v o*94an3is iii6u a boundary as shown to the right. Which segment:i*4nuismuh i4ivq 9o6a30 ai best represents the refracted ray?

  98.17: Which diagram best represent, e+ enc-wi ot.rh-g2d:i7mvx s what happens to a ray of light entering air from water? Air is at the top in-vixm7n d .tr+oe-: h,w2gie c all diagrams.

  94.11: The critical angle of a material is the angle of incidence for 6bf ntpzh3npl8r 78ca3ook2aoi0e67 which the angle of refractiorik8a2tabz60ppo8 h3f 6onlon7c e 37n is:

  95.12: The principle underlying fibepg1)a nvz0pu yusy;/9cg g p/2r optics is:

  98.36: The critical angle in a transparent substance surrounded by aip ,lojawgvai0k;9/. vof j7c *r 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 rs8xf6-8ay t cq4e7va material 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 fvx7 -6 sqa4tare8yc8in material X?

  03.15: A jeweler can distinguish between a diamond a+o:ng:dqc) 0 b xdsanss6 .x,end a piece of glass by observing the criticals a xddng6:x0ecsn:o, )q+bs. angle of 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 a clear material. When tok(j:-y lri: i6pwjcs31 1pnb he light makes an angle of incidence ej6c1- bkipn:i1ojw 3 ysp: r(lqual 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 indkp9lls ig d 24qz/ykm)z2j*(u ex of refraction n. The laser beam emerges from the material and hits a target. See the acco4j /2)(p dmkly g9zqli*ks2uz mpanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from medium m, mr)vceg-y32ctm y/ .irb7 o1 to medium 2 to medium 3 as shown in the accompanying fig e,)og./c-cym ry2b 7mmvirt3ure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light wjjlg g82ellj :-k;u-passes from medium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about tll:;l -28j gujkgje -whe three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the tw/r jb (5ht87oqyz0u:m rpv,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. Which of the following best describes the relato/z ywh jq57 :,ptu t0brr(mv8ion between the indices of refraction?

  09.34: The diagram below shows the path taken bkwc 6x uq89:uu;t1 lley a monochromatic light ray travell 8;1uk:6x wqclue9 uting 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 travesb/1 ov)ae zhy75 8ixfling 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 tao)zmc e./m.9kzz hu/rnu5 n 1he surface of a rectangular block of glass at an uzm) n k z/r/z1u.ohe.acn m95angle 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 waveler(g0htro: iac 8i)4w.9t j 6+otbhmelngth 600nm is transmitted from air into a piece of glass. Which one of the labeled arrows best indicates the path of the light.4ehhr+)ma rtjwgc t 98 o0b(it6li:o ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glassed- /i 5b oz:3zv9nbua*m di3b 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 path of the light after it exits the 3ied5n b*i9dm bzua /:bv-zo 3glass?