11.24: Two wave pulses 0lz.w5oij:;fa6 kb y etravel 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 individual pulses coincid ;za 6o f.:el0kw5ybije?

  08.30: A light beam passes through the k f/ixz*hax.us 6hf (-air and strikes the surface of a plastic block. Which pair of statements correctly describ/a( hxfk -.i6z*x ufhses 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 /ivap z* 2/hcwqt0g- fin the diagram shown. The ray reaches a flat mirror placecvw*/igqpa2 t-0f hz/ d 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 inci/ jz t7sm8qiu c3h*ypn zceiv.qzl28ckp :8+ 3dent on

  05.18: A student hold a hand mirror to observe the back of he;hm(n7c o3 i.rhtdf;dr 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 mh;foc (mi; r73hnt.ddirror 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 d4b22 2u fxs.ajcf-reyirection when it enters a new material. Which one of the following chob. j2aey - f2rxsu2cf4ices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength ,le -sgcq5 vt4400 nm in a transparent material. Whatq-gstcev ,l54 is the index of refraction of the material?

  98.04: As sound travels from steel into air, both its sv;6+jcex;8zp i.fn+ m7wdg0)iv uypxpeed and its:

  00.01: As a wave moves from one medium to a second medium with a differen:clie-jch2k2v0 52gli5ble j t index of refraction which of the fo ev52 5 hceil:0-2jcb kgijll2llowing wave properties would NEVER change?

  05.47: A sound wave generated from a tuning q)qm h0g6iw zq,8 d,1mphir( ifork of single frequency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statemeqz068hi,qd1m iqhi pw m) (r,gnt is true about the wavelength 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 emits a souf6-zdt-q 99w n19d j5f 7ibbooih vxr+nd wave that travels toward the surface of the water. In the water, the sound wave has do9-bjdf q 6iw+x1o 79vinr bf-t95hza 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 roge3am; 9+k ssectangular glass block with an angle of incidence g3 ss;+m 9eaokof $0^0$. 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 on a boun2)hk czf5:oad 9k bo. 0cdkgzy40xy vxbs(/w;dary as shown to the right. Which segment 2ob.xd vz:(yax59) whk0 /skgdk0cbo ycf;z4best represents the refracted ray?

  98.17: Which diagram best reprmd8ha j8g.p7 3rkwo7z esents what happens to a ray of light entering air from water? Air is at the top in all diagrams. krz h3w a78jpdg7m .o8

  94.11: The critical angle of a material is the angle of incidtq/jmp e014ue ence for which the angle of refretejqu 4/0p1m action is:

  95.12: The principle underlying fiber opticsm0gz d:qwmbfk8csdj5*s *;dit 57: ft is:

  98.36: The critical angle in a transparent subp l)h1sa3j kh ki9:; qu3kfct)stance 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 = 1.5fgu 3z70ep-w 3grnz;z to material Y with an index of refraction of n = 2.0. If the speed of lighe0;f3z7grz3w-ng p zut in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can disti;h5g29rylcto+ v qi8vnguish between a diamond 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 has a critiry8qvhi 2go ;9+vc t5lcal 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 9b+8yulykjqc x6;5evd rymi: ,i8 ;wwfrom air into a clear material. When the light makes an angliwly:;xq y5cjevry+ ; ,wum 9b86ikd8e of incidence 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 index of refraction ijzw+ap7pq ej,6 wo ;c2zzl-t ;i36rdn. The laser beam emerges from the material and hits a target. See the accompanying fig+w3rza 2ct6 o6qz;zdp7-,e i;jl pwjiure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from medi)xdmgc9c08n+4 hgjktum 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the n0d4gxj h9)8t cmk+gcrespective indices of refraction (n1, n2, and n3)?

  00.14: A beam of lightmjv /27omy8pvde.g j sd6h; bnif/b2+ passes from medium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refraction, nv;/gdo2+m6j bp i 8v j.s/7 2hmdfyebn1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes passing ;xmv8krj7 ym4r-yzh.2ki7 czj gaf61through three transparent matm rk. zmh7gkxja61 vj-c4y2r;7iyz8 ferials. 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 indices of refraction?

  09.34: The diagram below shows the path taken by 3( zz08kb:f-7e qbjse.vd k rsa monochromatic light ray traveling t3esvk0 bf7qj8k.bd: ( e -szzrhrough 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 *f3 jc7s8lh byin 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 surfacn:51l+9nu9dd t1f5) w pqjb3 wm xhghve of a rectangular block of glass at an angle ofdgtpwvb5hxn )hd1u5 3 :j1wmn +l9f9q $45^{\circ}$. 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 transmittelun4qvabk ;7 d30ou :-qrl h-d(9ilr ad from air into a piece of glass. Which one of the labeleda :d la n3qrrk-ulb7h qv9(-lo;i0u4d arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass c*u;8ewo im xueflj:* f(/d +mas 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 tld;i/ + e:8m uowx*jc*(fm eufhe glass?