11.24: Two wave pulses r9qns t/sa; :wuxx+1otravel to the right toward a rigid boundary as shown. After reflection of the triangular pulse, the+u9 a;q:1st r xow/xsn 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 air and strikes the surface of a plasticm+5z7 w prhqq o;3)tfj block. Which pair of statements correctly describo)r fz5q;3p tqm+h jw7es the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light 1 dnqd)9cixka2p:a. r 6fu.pipasses straight downward through the point labeled B in the diagram shown. The ray reaches a fuk). f9ca1r:xdp p.qn6a i2idlat 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 liggf1t.z8v h: aitw8 ox8ht is incident on

  05.18: A student hold a hand mirror to observe the back of her head why.dj +rh.yyzqui*4 e;j2zf w(ya3( fwile 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 *42 yy3u.ywrhye i(+fz( jqdf a;w.jzbehind 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 chanxfr0 bv:z-4 slges direction when it enters a new material. Which one of the frfvz4: sbxl0 -ollowing choices is the term best associated with this phenomenon?

  96.19: Light that has wav6br/6oer1ka q+ox7g melength of 500 nm in air has wavelength 400 nm in a transparent material. What is the index of refraction of gmbx7r16+o rkoq a/e6the material?

  98.04: As sound travels from steel into ai)e+f; w6d u9he l4dboxr, both its speed and its:

  00.01: As a wave moves from onx77uh 62n n8vpqd-ei7bfu 0rze medium to a second medium with a different index of refraction which of the following wave propdxn86n7 hqp-e 0irv7b uz7u2f erties would NEVER change?

  05.47: A sound wave generated from a tuni2.sker8bi,r kc0wimw rn rrca89*p3( ng fork of single frequency travels from air (with speed of sound 340 m/s) into rock (witr 8p ink 2ibmc, (8rr.csre03arw*wk9 h 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 a*8(nw a 5kdwsft the bottom of a swimming pool emits a sound wave that travels toward the surface of the water. In the water, the sound wave has a frequency awn s8*d5fw k($f_{water}$, 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 rectanf5,fdstw.zw 8gular glass block with an anglz 5f tww8fd,.se 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 3u8p1 bj sni,opoint P on a boundary as shown to the right. Which segment best represents the pbio3,8 j1sn urefracted ray?

  98.17: Which diagram best represb gtf0sm(x /.ments what happens to a ray of light entering air from water? Air is at the top in all diaf b(mgxm ts/.0grams.

  94.11: The critical angle of a material is the anr5 f)qscji, 5 o(s35rhg)as hfgle of incidence for which the angle of reqr3 ar5)c,fhs ghi5s f5j ()sofraction is:

  95.12: The principle und x:rw3ha*hfq+p 4,dinsfr6: o erlying fiber optics is:

  98.36: The critical angle in a transparent substance n7:s 4l 7lywwg-leuw;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 matz-;, +fo2hkt+ u:,vt tkqp zjt*wbi9herial X with an index of refraction of n = 1.5 to material Y with an index t *z;z2hk9t:pj wou,t- vqf+,h +bitkof refraction of n = 2.0. If the speed of light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish betw nde9rpnmax, 1/8t7j0rbghy/bj4 k n 9 yux7+leen a diamond and a piece of glass by observing the crijtb hj791xduk7y9xap0+/r/4bl 8 nnrn , mygetical 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 makes an a -km qhamt4;+;iiv2 wingle ofk2 himvqim4a+it- w;; 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 n. Tves;uf6jqb0 r+:1 xgd*gtc-ahe laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of thedrfq 0;c*tgsx uav 1b+ 6g-je: laser and target. The value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 8. z+whhm 1k3h ti*kf7wx4kepto medium 3 as shown in the accomk *i4hw+ h.xwt81k3kzfhpm 7epanying figure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from me:0n1z9 ; r(xsr1akixsw.frf idium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexesi0 fss11( r w:fn;kx9riz .axr of refraction, n1, n2 and n3?

  97.24: The accompanying diatg*kuiv/l0xcjk3q 3d 7lp0 4u) u ly+pgram shows the path that a light ray takes passing through three transparent materials. The indices of refraction k)kpu073ldxv c*ltiuug qpj+0/ y34lin 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 a monochroma b)ga:smre7 sip1,n1otic light ray traveling through th:7r,g1 snpaomi1)ebs ree 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 ibu*bi-ren 4m(x6 oa 9an 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 surfaydnvp rkmz; mw.r il-4c177*l ce of a rectangular block of glass a4ymvwnprr17dm *i.l c7lz;-kt 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 hndwp/ yhc * v8 0a3v;o0jcg3eis transmitted from air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after it enters thev*/nhc0v w0 3pehjd3;oc gya8 glass?

  14.44: A ray of monochromatic light enters the right-triangular glass as med04c+k8f u6p paf 9xshown. The glass has an i8euadm px +4fpf6k90cndex 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 glass?