11.24: Two wave pulses travel to the right fm w43u2o1v/ be q ,w 5zyoi6kk/sm-ehtoward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pi6wwzfehikom/,y 4omv 5/ s1e b qk-u32ctures best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air anz1l3jqk:uk ,2 su vbl+xyo82ud strikes the surface of a plastic block. Which pair of statements c q:u yl1o2ux8lz +3j,suk bv2korrectly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes str*6.sha/( er1uliu t exaight downward through the point labeled B in the diagram shown. The ray reaches a flat mirror placed ate t* .1r6/(ihuaeulsx 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(oychp 38l giu 2la+xrub26m4 cyf-0c enever light is incident on

  05.18: A student hold a hand mirror to observemrb5(9fksh0o5 j p8dd the back of her 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 hj9m08p5ro h k5sdbf(d olds 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 changesyo6ojhe90fz, qzsi) 8 direction when it enters a new material. Which one of the followo 0hjzoisyfqz,8e)69 ing choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 4wlg11 oi0 .udl00 nm in a transparent material. What1udg lio0w1 .l is the index of refraction of the material?

  98.04: As sound travels from stees4ppw29m:nuad 0 0hi sl into air, both its speed and its:

  00.01: As a wave moves from one medium jv: 3jfk 75p e-j,x*xrsx f6ivto a second medium with a different index of refraction which oi:jf5 7x6p,s vk fxej j3*xr-vf the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork 2k/7mm esz dk1m gyh(ao3 h7*eof single frequency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). ezm/gk1 h * me2mod7a7k(3shyWhich 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 pool e7mq0ofaj4 xi :mits a sound wave that travels toward the surface of the water. In the water, the sound wave has a f o07: xf4qijmarequency $f_{water}$, 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 *gc; +1rmadso p q:g n1q/fns3light strikes a rectangular glass block with an angle of incidence of*:fnr /1dp3g1 aqcom;sgq sn+ $0^0$. 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 boundary as shown toljy2fiqxh)-k- (l- jq the right. Which segment best reph 2k-jqqx j(lil)y--f resents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light enter.4 l2zkr+qon ning air from water? Air is at tknor2nz.+ 4lqhe top in all diagrams.

  94.11: The critical aj c37ivk0iix s3pb xz b52 6-r9+kxrepi97p wangle of a material is the angle of incidence for which the angle of refractionbi3i ki2937cpxw k-6px+ 50zber pas79r vijx is:

  95.12: The principle underlying fibexcz7 znt7)w+ rr optics is:

  98.36: The critical angl2q ozt3ca li (pk+(wc0e in a transparent 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 from1oy yqa3ua ju7w/u 0t:k0dw*r material X with an 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 ayw 3/uwk rda0:0*y o1 qjtu7uis v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond and a piece of glass b,133ejj yu ;)g)sz. quotb ahqy observing the critical angle of the light in each material. G; 3o )zqbs1yu he.3at jgq,)julass 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 froe y6paqnh-r .xv3k *5bm air into a clear material. When the light makes an angle of incidence eq- bhnpr6 *aeyxvk3q .5ual 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 matec s;tyml, s2-zrial of index of refraction n. The laser beam emerges from the material and hzs smlt -c,y;2its a target. See the accompanying 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 medium 3 dfss)g iq+6i7 yhad92as shown in thedd2ygf) s 76aq i+9shi accompanying figure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium ew 3xqodp*4c6pln-b0v*nw-n1 to medium 2 to medium 3 as shown in the diagram. What 64x- nqwpvwne b**d 3p0-nlocmay be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying d ohh6 8ezh3fyk/0mjpsrdu84 7 iagram shows the path that 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 thkmz6/ph48rj3s 07 8hyodufehe relation between the indices of refraction?

  09.34: The diagram below shows tj s.-t/zc; vjk: 1 :*gkusayp l8nk3hjhe path taken by a monochromatic light ray traveling through three media;u lzh/:1kv jg-ny j*pcjt.3kk : 8sas.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 in glae*cd9 gnk3b2 dtme2ef 4cy 6u2ss ($n_g$=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 ,8- rtuex(ecw7z9vqu rectangular block of glass at an ang,qexc7e 9w-(zvuurt 8 le 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 0(pw5x*jcp 0.jbeli/ qj2xwgfrom air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ra0.pwxqjj 20 bc5j( elpw/*i xgy after it enters the glass?

  14.44: A ray of monochromatic lighto9w): jig9 .qoo1ofr d enters the right-triangular glass as shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of the lettero9r oo)9iw j.go1qfd:ed rays shows the path of the light after it exits the glass?