11.24: Two wave pulses travel to t .otwlkrwl5m hyzt9a* :o +a /v/4fiu/he right toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere*f rwlo/lt9/t yokvui. :m5h+4/ awza. 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 ii9n0mj-gb /a j i-:;c,xuioosurface of a plastic block. Which pair of sta,u ii;amb/x ij0:jnc- o-g9iotements 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 in,*f/gby4 e q snp*e0bt the diagram shown. The ray reaches a fla n*ep*0,fe y bst4/qbgt 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 occurl2tx4z (h *mdgs whenever light is incident on

  05.18: A student hold a hand mirror to 0btwv0ra- hkbuw 35 t)observe the back of her head while standing in front of and looking into a wall 5ttk 00) wbhubwar3-v mirror. 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 direction when it enters*bs9rdfpsu 48q 75sg 8hlgi: a a new material. Which one of the following choices is 8*a94g:i fu87 ph5qgl rdsbssthe term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in*f8 oc/vx a+lii r/ fl,q9:pwl air has wavelength 400 nm in a transparent material. Wq/aoilclr:vp,x l9f f+i 8w*/hat is the index of refraction of the material?

  98.04: As sound travels from steel into air, both its speed and its: ,k9ts4f bk3co

  00.01: As a wave moves from one medium to a second medium with a diffe8xmiz:u d d9e1zmo;s*rent index of refraction which of the following wave properties woulz8 mm*u9d :e s;1doxzid NEVER change?

  05.47: A sound wave generated qf(1.5w- qvxuu*r0k9hzely a from a tuning fork of single frequency travels from 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 fro0xza.yr * fu(w1vl q hueq9k-5m air to rock?

  14.28: A waterproof speaker placed at the bopw.1i hejg*p5s4i go /ttom of a swimming pool emits a sound wave that travels toward the surface of the wo4ii wpg sp j/g.1e*h5ater. 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 glass block with an b(6h eq/ lc3no4 :9rkl8yjpai angle of incidence of hcpkn3o4qjli(re/ 6a :8by l 9$0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is dir0nqk(j r-sk 8tected toward a point P on a boundary as shown to the right. Which segment besr0-nq s8j tk(kt represents the refracted ray?

  98.17: Which diagram best represen9 q /)om h-jrnwjukqf9,9 9gmhts what happens to a ray of light entering air from water? Air is at the top in all diqmr9mq)w u-n/hgkj,9 9hfj9 o agrams.

  94.11: The critical angle of a material is the angle of incidence forr -w4da yaxdqq 1im92zy4:os: which the angle of refrs:a wyd :dzq a2449oyxrqmi-1action is:

  95.12: The principle undxc8c:-8*lw xxx+ osoi oxr q;w:05g1mujauh* erlying fiber optics is:

  98.36: The critical angle in a transpare acr7vk5c4e* z fvzl8f/65xqp nt 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 r6h 2m pjq1dd2+./fjpkhm 1rgvefraction of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of light in mater j .6jgqhd1k mm+/1dvh frpp22ial 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 glass by oja4c8/ t we:urbserving the critical angle of the light in each material. Glass wej:tcw8 ra 4/uith 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. Whenh 3-et bxhw+qv 5fa3v( 7b2eg1fywt x5 the light makes an angle twe3h+ygv5a 5bhqx 1(23ef7wt -vx bfof 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 las h2.b fmrmkyy9nmm-3/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 target. The valu3rkf-9mb . 2n mm/hmyye of n is:

  95.31: A beam of light passes from me*;s7xr wznbh54mo f *ofhp ,zw-43cm ddium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indm ds4z,*mxfhbz p5;7wohn roc43*w-fices of refraction (n1, n2, and n3)?

  00.14: A beam of lig pu,r7ne8z( rbht passes from medium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refraction, n1, n2 an7zrnep,r8ub ( d n3?

  97.24: The accompanying diag5qf*bg6ov)rm(e1vzy q pw9 9 yram 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 the relatio1p9*vgw 9rmoqyv (qeb6 y5z f)n between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochromatic d8mpm0 ;i2su clight ray traveling through thre2u cmmsi0p8d ;e 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 travebdg4 t;f k)9o)j rp7vcling 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 at2y ggs,u p, m7nhfya8 92-fx7o,pozx8eqf )t rectangular block of glas x7y8g7p f9h8fn,stf2 u ),oxmpt,egao-y2 zqs 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 wavelengtpqgc- xh :lh /p)g3on9h 600nm is transmitted from air into a piece of glass. Which one of the labeled arrows best indicates th/ gchn 3x9)pp :gqo-lhe path of the light ray after it enters the glass?

  14.44: A ray of monochromati8.)qoapbx: ml c light enters the right-triangular glass as shown. The glass has an index of refraction bm. )oxa pq8:lof 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?