11.24: Two wave pulsv8b4o09z4 ntpyvqp:; jbv j-y es travel to the right toward 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 centers of the individv j:oy0btz4pq;p 8jv4bv-9nyual pulses coincide?

  08.30: A light beam passes through the zixr si5.fy :jg2no/:air and strikes the surface of a plastic block. Which pair of. x:5jri /ofs2ig: nzy statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point labeled B 08cz1lsh+lcu dmw7,yin the diagram shown. The ray ream 0lys 8c7hlduc,z+1w ches 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 incidehe i 9tq8b7t g/z1nat5nt on

  05.18: A student hold a hand mirror to observe the back of ho3; /.ec ikczger head while standing in front of and looking into a wall mirror. If she is standing 4 ft in kc3;cog/. ize 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 thoy txh+gy37hadx2a 4 -at a light ray changes direction when it enters a new material. Which one of thex3- y4 ay hdhot7x+2ag following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelengt/jta2jx.5u n5t*ubcz h of 500 nm in air has wavelength 400 nm in a transparent material. What is the index of refraction of tttub* 5 juz5njxc 2a/.he material?

  98.04: As sound travels from steel into aict/l.z n 4nwi8diqt gg:p *i wwj,)g.-r, both its speed and its:

  00.01: As a wave moves from one medium to a second medium wiww zfp hi+i2ga3d2c662x+qm nth a different index of refrac+mxwd3 h az cnfpig+2iw662 2qtion which of the following wave properties would NEVER change?

  05.47: A sound wave generated from a z;o*b5 snyza8-dmjyqg k9:w61wlu0 t 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 trueto0jzs8 g:b5yudwa lkwq9my n-*6;1z about the wavelength and frequency of the sound as it passes from air to rock?

  14.28: A waterproof sl(hp3 i-,) *if blhkvcxe7 9xrpeaker placed at the bottom of a swimming pool emits a sound wave that travels toward the surface of the water. In the watb7xkv*i x39p(-lce r,i )hlfher, 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 ldt :b)b8jx. .iskom3 of white light strikes a rectangular glass block with an angle of incidencesj.3l o8 m.bktdib x): of $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of lig h/n0y42q;hbtetn6 tx, ly.(qyge m /fht is directed toward a point P on a boundary as shown to the right. Which segment besn0gt2 htq, / ne6b(e;mqyl4/thyxyf.t represents the refracted ray?

  98.17: Which diagram best represents what haxs/k8om mz,x p e8-e0dppens to a ray of light entering air from water? Ai m0x8xed-m sope8/ z,kr is at the top in all diagrams.

  94.11: The critical angle of a material is the angle of incidence for whicm/r6 8qqhn(xtr(xnk( h the angle h(xmr /xn 8rn(kt(qq 6of refraction is:

  95.12: The principle underlying fiber 7thpl5tbradl cd2p-4k) t/ j,lw j0h9optics is:

  98.36: The critical angle in a trmcvznf9 p:( v+ guiu:,.j(ixdansparent 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 from material X with an index of refraction of n = 1.5 ttzg h5. pkowjz cjvtu9404 ,)ko material Y with an index of refraction of n = 2.0. If the speed of light in material Y is v, what is the speedtguh.0 4jjvtk pkcw,zz54) 9o of light in material X?

  03.15: A jeweler can distinguish be;tu9bs8 u6 kt/tb+ 6ql6meqpotween a diamond and a piece of glass by observing tt s6/qq9+pl;em6otbt k6bu u8he critical 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 the light mak(as+9rxm8c2fqja9 sf;q i+ bles an angle of incidence equaa +fq9lmsfraqsj+x (; 2i 89cbl 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 index of refractink6oopv;.cp6tjbv 4 8fk44l p p zc:8xon n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of the laser and tl 84 p;p6o.j48tcno pvx:6ckzkpfbv4 arget. The value of n is:

  95.31: A beam of light passes t7j d0aw s/gvx71*vpl pn -vb,from medium 1 to medium 2 to medium 3 as shown in the a/ v07- *vv,ajgs1dlpt7wp bxn ccompanying figure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to mediumpu*3fkih3 hwl+ i8 4ab 2 to medium 3 as shown in the diagram8*ik+f bp43lui3w h ah. What may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram showsg 1md nhgpe +uoyql3-m, w/u-(s w7+yqn /a2be the path that a light ray takes passing through three transparent materials. The indices of refraction in materials 1, 2, and 3 ag1-s-aumnu (,yeqy /mdbp3qw+72 eh/w l+ong re n1, n2, and n3, respectively. Which of the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the patk,xv-pwf ( l1f,9yj0yoi5 qh ph taken by a monochromatic light ray traveling through three media l y,ivyh1 -p9qxf0(jk5, fpow.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 t y zy ,hd(orc.;q,id/nn gl3k7yth b+;raveling 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 isn. xfru )+yq8i incident on the surface of a rectangular block of glass8n+qxyi ) ru.f 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 wavev9 rc6xq:b. + 9otgt-6kyq obdlength 600nm is transmitted from air into a piece of glass. Which one of the labeled arrows best indicates o66. 9y bqdr-b9vtgkcq:t+ ox the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular gvjp8dr 0 q-xo5wk0c2slass 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 0 qwjrs- 28kvdocx0p5light after it exits the glass?