11.24: Two wave pulses travel to the right toward a ri.6 mio*6i(zh(p6ztt t0dmkr ggid boundary as shown. After reflection of the triangular pul6t( kt om0i (r 6*gmizp.zdth6se, the 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 plasl -u aa;uu v0*uy+2jhctic block. Which pair of statements correctly describes*ca l2u u0u v-hu+;jay the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes strapb73;qn2 mid- o jx6f/0vyil jight downward through the point labeled B in the diagram shown. The ray reachbdpq07j2ym 3; x/ 6iivl-n jofes 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 wh:l d x+zvv e9vte1d64menever light is incident on

  05.18: A student hold a hand mirror to observe the back of her head whi 64r(n*p gd,:eb olm4,:iab) jwf vznwle standing in front of and looking into a wall mirror.ww(n g:oie,4v) bnldjabf*rmzp,6: 4 If she is standing 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 directrk,r5dgoiljn(l8 + h4h 2 :fztion when it enters a new material.:g4rflzjth doi5lr,( 8h+kn 2 Which one of the following choices is the term best associated with this phenomenon?

  96.19: Light that has w0l+j t3/vkbc 7nem ,h/ 2 (oabc:zozxtavelength of 500 nm in air has wavelength 400 nm in a transparent material. What is the index of refraction 2zem7cjv3oobl+ct(: hb at/xn, zk/0of the material?

  98.04: As sound trave7*jwxglfp uy+o(hg -/ls from steel into air, both its speed and its:

  00.01: As a wave moves from one medium to a second iarc rc3- .1 f7i s8zq5p;tu2xjk 8eft i4c0jnmedium with a different index of refraction which of the7ie80 5rzc3 fk pi.rs ; auic2f-4t8j c1txqnj following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency travelspa 7gvvq1(cz6 fro (cvq7zg a1p6vm 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 from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimminj-b em;7dutn/um /a)xg pool emits a sound wave that travels to; uau mdtb7/m)xj en/-ward the surface of the water. In the 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 strikes a rectangular glas44-bz pqx43e wz .lcbps block with an angle3pz44 q wx.c4pzbb -le 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 directet.f ij+bi8)1i wddzz 0d toward a point P on a boundary as shown to the right. Which segment best represents the refracted ra.8fi 1zb dt jzi)i+d0wy?

  98.17: Which diagram best represents what happens to a ray of light enteri)/ glu pwpgfi/3+oh (rng air fhgluir wo /pg()/+p3 from water? Air is at the top in all diagrams.

  94.11: The critical angle of a material is the angle of incidence for whicgedcx1im/b9a x(th2v, b 9d.ji jn;s)h the 92 bn jtgdvcs1(x./;aibe9 ,jhd)x imangle of refraction is:

  95.12: The principle underlying fiber optic;wgn ns0fwhk0g 1x:q/ s is:

  98.36: The critical angle in a t4u h,o,ogur9*k.aayp k /prc)ransparent 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 matej,c1d9o qa5bl rial X with an index of refraction of n = 1.5 to material Y woc1j5d ,b9aqlith an index of 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 between a diamond and a piece of glay+wmgvu:zt vve m; ,7.anz3 r-ss by observing the critice:.+n;tgv,ar 7m-uwyz3 zvv mal 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 zz8jagczoyi: o r-92v* g)e6s light makes an angle of incidence equar*-zj)g2v:c 9a6iozeo gsy z8l 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 ren kr,g elg3*/tfraction n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of th * ,gltr/3nkege laser and target. The value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 to medium 3 as twi k+se-y5 v293eou eshown in the accompanying figure. What is true about the respective indices o-k e 3y uwst2+evi95oef refraction (n1, n2, and n3)?

  00.14: A beam of lightt2 8qwig*t5o wwd.rz- passes from medium 1 to medium 2 to medium 3 as shown in the diagram. What may be concludertw.zgwd 2wo*-5q8t i d about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that qp qxfvt.8dmq32 5he, o3fl(ja 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 o.x ,th f53opq2d(e f jqqmv38lf the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows th1n / x 3y6ckrop+ld6io,oiz b+e path taken by a monochromatic light ray traveling through three media.The symbols16/b ,ro6dzkooyi ncx+ 3 pi+l $v_1$,$\lambda_1$ , 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 i(yn ng,:um,:b (q m la19kvusvn 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 rectangular block of g 7uns4v.,. s6clcdvm blas.,6uc snvd 7vb m4c.lss 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 wavelength 600nm is transmitted from air into a piece orlre1,dh53 j 33u bukhf glass. Which one of the labeled arrows best indicates the path of the light 3,r uredbj3 5hk1hul3ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glm:))+u4k hlcjsh3t wvass as shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Whichtwj4 vchuh)lm+k)3s : one of the lettered rays shows the path of the light after it exits the glass?