11.24: Two wave pulses travel to the ri2jdl*.h,dfth0 qq - 0qo5hh csght toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of td- hj0,st.cq*5qfod qh2 0hlhhe following pictures best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam tddw54meixus * i +)4apasses through the air and strikes the surface of a plastic block. Which pair of stad4 sx a)wm euit*4d5+itements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of lighta7ug4m8h+ jqvmfz 2q9 passes straight downward through the point labeled B in the diagram shown. The ray reaches a flat mirror placehjvq7 mu2g +489m zaqfd 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 whenevg6v-.ut-ix c6 t (rcicer light is incident on

  05.18: A student hold a hand mirror to cp259hw ;ebmnb aqr2*observe the back of her head while standing in front of and looking into a wall mirror. If she is sta2*r 2wqhban b;ce5 9mpnding 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 dirsd;sb.ct 6m -dection when it enters a new material. Which one of the followingsc .t-dm6d;bs choices is the term best associated with this phenomenon?

  96.19: Light that ha7zlb 8oz3qd5f s wavelength of 500 nm in air has wavelength 400 nm in a transparent matdzfbo8zq 7l 53erial. What is the index of refraction of the material?

  98.04: As sound travels from steel intozyrkdd/t92b- h3ag o, air, both its speed and its:

  00.01: As a wave moves from v 75q;i0hbkqb one medium to a second medium with a different index of refraction which of the following wave0; vih kq5q7bb properties would NEVER change?

  05.47: A sound wave generated from m-x 0 uh y iu*f5oa..geb)xa,ua tuning fork of single frequency travels from air (with speed of sound 340 m/s) into rock b ih5uge.,o.aau-m0 x*x u)fy(with speed of sound 1500 m/s). Which statement 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 pooz( f4f a7rvv1woy d7sci63 81l;q f9q0hchnz hl emits a sound wave that travels toward the surface of the water. In the water, the (ff hizlw r0;ca71 1yhhoq 36nvzdsq497cf 8v 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 x8k5*b:wf3r/mrt h2f8vwy wc a rectangular glass block with an angle of incidenctfc5/:r8k myww x23*fhwrvb8 e 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 dirnbomzm+1r;efn2)b4 b zs6v:p ected toward a point P on a boundary as shown to the right. Which ) nb26m+ obfbez 4vns1:prm;zsegment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light ennj +zn e+hf.bu 6fjud2835ulc tering air from water? Air is at the top in all diagramsn .5+82bue znujl f3h+c6 dfuj.

  94.11: The critical angle of a mater o:pgy5o 106zaamnx0pial is the angle of incidence for which the max0 5n 0:opgz1y a6poangle of refraction is:

  95.12: The principle underlying fiber opticsz *tssf kw;. q9m4 ,6qqz,uindxtge,) is:

  98.36: The critical angle in a traji:4d; tom80 +v4am wd1tq npn,amqn(nsparent 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 an4 ,iidvxtc(w0 index 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, whaw,ixd(40 tivct is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond and a piece of glass by oba sm6 j-y2a:(mvid6weserving the critical angle of the light in each material. Glass with an index of refraction of 1.52 has a critical angle of :w (jae2msv ayd66-im $41.1^{\circ}$ while a diamond with an index of refraction of 2.42 would have a critical angle of:

  05.26: Light shines from air into j;y5 ;hkfn)vy a clear material. When the light makes an angle ofnv) 5;fyyhkj ; 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 iq j;, dd6ot 3:8/siq jjyqdna:n a material of index of refraction n. The laser beam emerges from the material and hits a target. See the accompanyt,n ddj8:q63s/a ;d:q ojyj qiing 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 2 to yy hor - 0jc2bs88rm 9ks7y i*a/ti;jymedium 3 as shown in the accompanying figure. What isi;hj-*7cyky 2asrio0 y98ym rbs8/ tj true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from w 0:hlz71d*vir) ozmamedium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three i* ao7) dm0 zz1vw:rihlndexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a light ray takes passing1g 1pibv fj5;a through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, resp5b; jfpvig 11aectively. Which of the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochromatic lp1xdkagb;efw45 o 49dight ray traveling through three media b5xw pk4 efad;go14d9.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 trave lsc; oxhv/huv2*oc60 ling 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 surface of a rectangularz/(rti n*vw e* 3 fq5a- vezh7npm4c7z block of glass qpr/z-e 34efwmi t vzan5v(77** czh nat 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 piegbl caet 7oket )z1* .sh-2 ybbe*f/4ace of glass. Which one of the labeled arrows best indicates the path of the light ray after it enf ahty4b z e1lkb-ga*o . /tece)bs2*7ters the glass?

  14.44: A ray of monochromatic light enters the right-trianguld- oe(ejkqtdnq 4b7f,eq-: f )ar glass as shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of the lettered rays sh7,j tdfdf-qekeno) :4-qb( q eows the path of the light after it exits the glass?