11.24: Two wave pulses w6 cvr*n1: wav62p cwprlk7se0df0b1 travel to the right toward a rigid boundary as shown. After refler 7*l vwwn:6f6kse 002pda1cb1prvw cction 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 coincide?

  08.30: A light beam passesb 34 yuhephxz2v/4 7gw through the air and strikes the surface of a plastic block. Which pair oyhv pgz x 3w47/bue24hf 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 ;i w)b j6z+ihw;b5gyhin the diagram shown. The ray reaches a flat mirror +j hbz;5w) i6bwy;gih 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 liyojbkw,, o zvtrb )z;i3 3w)m*ght is incident on

  05.18: A student hold a hand mirror to observe the back of her head while stand 1)p3: xo+hvzsq1i n* (dgrfiging in front of and looking into a wall mirrorho v:1nxs f)+( rqzi1i 3pdg*g. 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 abmh wtao110x, light ray changes direction when it enters a new matea, o11bwx thm0rial. Which one of the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm in6. rk4tp 6lgg6)t ifx6dtm j7bgh( .yu a transparent materiyt..g)i6p (bu 6 g667ktd gxrh4tl fmjal. What is the index of refraction of the material?

  98.04: As sound travels from steel into airo i3kwjk4:b-p, both its speed and its:

  00.01: As a wave movesrii tn75 5xrgwr .d0g5 from one medium to a second medium with a different index of refraction which of the following wave properties wou tg5d7r ni.5ri rxwg50ld NEVER change?

  05.47: A sound wave genera5w yczsy6;kos.a* 6djn4 h9hpted from a tuning fork of single frequency travels from air (with speed of sound 340 m/s) into rock (with speed5 o 6.4w*y 9sh6j; ynzphsdcka 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 xu0mmo3xe c;ot rg;q* v/hkd)bg:66xat the bottom of a swimming pool emits a sound wave that travels toward the surface of the water. g/mmd k:xxu36;x*0 ot oe; c6g)qbrvhIn 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 str 1.t6l/2kyaooj.z64 (empkdi/d wd ayikes a rectangular glass block with an angle of incidence of k1a do/alj/(4.k wyi6 ote dpz.myd26$0^0$. 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 ass0 / w seqz0a8r7(h* 5 ol6sehmfg-dv boundary as shown to the rie5/sz78 dae6 -q 0h(l0os hgmfwvs*srght. Which segment best represents the refracted ray?

  98.17: Which diagram best reprel- y6g(gjdnt +sents what happens to a ray of light entering air from water? Air is at the top in all diagr6tyg(n l+gd- jams.

  94.11: The critical angle of a material is the angle of incidence for whicc e9o 8vjcx b)m i)5( su7sf6zu:ahf8qh the angle of refrac fux9(:es8)i fs)bmujhzc6cq7o5 v a 8tion is:

  95.12: The principle underlyi7r+j2 he8qf zlng fiber optics is:

  98.36: The critical angle in a transpw. d6z b5uqqt)arent 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 o g5o8o6+z31a isrz,al j.mzit cr*s0u f n = 1.5 to material Y wijm ,0r5clu 6*oia t3z i+gas8r1.oz zsth 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 aqi jdzz1*o8s2 piece of glass by observing the critical angle of the light in each material. Glass with an index of refrz sjz8io* 2qd1action 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 lighzl:hx: d*m x-uiv2nm / 73eohet makes an angle of in/ :3n7vhehmelmod -x :*2zxiucidence 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 lashy.w9d3x zwt. er is embedded in a material of index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of the laser and tw39txwz dyh. .arget. The value of n is:

  95.31: A beam of light passes from medium 1 tfs+i rqc i/ sj9c(m;7c ltgc)9o medium 2 to medium 3 as shown in the accompanying figure. What is true about the respectivc gs/9iji sqcm9 ;rcf+ct )7(le indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium )qw9p 7vrc /vd b4*bq6gg5tbd2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refraction, n1,q br6vd v*cp)wqb 4gtd97 5/bg n2 and n3?

  97.24: The accompanying diagram shows the path w p (jnva;c(7tthat a 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 of the following best describes the relw an pc;7(t(vjation between the indices of refraction?

  09.34: The diagram below showsdc2 i0 isnj,4j the path taken by a monochromatic light ray traveling through three media.The sy,ji sn j24cdi0mbols $v_1$,$\lambda_1$ , 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 traveling4harej 02cvflol9 /2 s 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 rechzf7scs( 1q,jauw2 7nlr:u j;/yur( htangular block of glass at rjsj a;(cql7yuh ,1z wrs( 2/7hun:fu 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 l-u1o du6luo5is transmitted from air into a piece of glass.65dul-oo u1ul Which one of the labeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular9y4shwr(gw4j.9zgwlc6 /wf 2ff dk /s glass as shown. The glass has an index of refraction of 26fw s/ 9c /92 .(ghgk4flrwdzjw4 sfyw.00 and it is surrounded by air. Which one of the lettered rays shows the path of the light after it exits the glass?