11.24: Two wave pulses traveln35i-uexrg 6ml,d z 4g to the right toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pim i3 ,x-d6 ggren5l4uzctures best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air eor:+p8 64toh4rupa ,rqom o(and strikes the surface of a plastic block. Which pair of4o4: +rmpoeq8 p hu(6ra,oro t statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward throughc bl0l9rhlst1* u ea9tp11zm8 the point labeled B in the diagram shown. The ray reaches a flat mirror placed at0z l 1u ll911r 8tec9tmh*absp 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 occ w;wv/4i4m kly5 uxbq.urs whenever light is incident on

  05.18: A student hold a hand mirror to observ 8p/*f wnt0tze,q3cvfe 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 holds the hand mirror 1 ft behind her head, she will see the back of her head how far bew0/ 3,fnqetc*ftv8 zp hind the wall mirror?

  14.25: It is observed that a light ray changes direction when it enters a new ix+ayt1m 7/(,eu vdnt* ixg9nmaterial. Which one of the following choices is the term best associated with this phenomenmn7t(/dgv,9+xta iuix*n e1 y on?

  96.19: Light that has waveleng 8 w;ayuepv(d9th of 500 nm in air has wavelength 400 nm in a transparent material. What is the index of refracti eup9 ad;v8wy(on of the material?

  98.04: As sound travels fro3n i(9a)-zt+uc wr zwzm steel into air, both its speed and its:

  00.01: As a wave movesb z jtr- :bre+g3..gc. xava8s from one medium to a second medium with a different index of refraction which of the following waxtg.v+bz -8cgb:3 ara .sej.rve properties would NEVER change?

  05.47: A sound wave generai(; z/ur6muewvj v+wlf )d0o(ted 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 tilvz(/ ;ueu0vrofj(+w)6mw d rue about the wavelength and frequency of the sound as it passes from air to rock?

  14.28: A waterproof sps.09.5rgn7pu5/du4jjgjs bn gq mbj:eaker placed at the bottom of a swimming pool emits a sound wave that travels toward the surface of the water. In the watenn s.4/bu5.pr jdj0qus:b5 g7j9ggjmr, 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 y* an yxw*7*k3tn(g *7wdmncb0uu)hya rectangular glass block with an angle of inci*n*)wch0*7 ymuwk7yd*bt 3(yanug xndence of $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of lighraoxiqg)r ze :u(ve3vho 5xu 558ph)8t is directed toward a point P on a boundary as shown to the right. Whi8a)rv vzugx hq:x(h) o535u8irpee5och segment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light eg l ,fof98sc9gntering air from water? Air is at the top in lo9g8f c9g,sf all diagrams.

  94.11: The critical angle of a material is the angle of incidence for which t282j ykf4knz qhe angle of refraction 2nkf2 zk8qy j4is:

  95.12: The principle underlyi 04ic5t3./8kjlb *p bx xzrszang fiber optics is:

  98.36: The critical angle in a transparent substance surrouhlk pr1d e6gllu 5+h94/ym+iunded 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 of n = tgn bzio zn*ya)3xv+n1:i41 d1.5 to material Y with an index of refraction of n = 2.0. If the speed of light in material Y is v, w g) +1:nzzoanndixvy4*it13b hat is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond and a piece of glass by kuq- mhgqw 52uh p63x+observing the critical angle of the light in each material. Glass with an index of refraction of 1.52 um6k+h5 -u w2xq hgpq3has 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 px5j.xlzvuvxx1,b- 1 angle of incidev x bl j.x5,u1xzvx1p-nce 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.) 2ta10nut j p;wkloc /6u/kcm The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters o pulcut) oa62/j1w/;0 nkk mctf 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 arn,9+,7 v jd4 a henexjuz.z;zs shown in the accompanying figure. What is true about e+r ,en74zjxz;h9.,nj zuad vthe respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 g3xnk 76/78)za4tyr4rzyece 8 oz mbrto medium 2 to medium 3 as shown in the diagram. What may ry7zb g yc4zo6rze3t8mxake78 4/n )rbe concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying did 8x7z; 6p0aaq b/jmkoagram shows the path that a light ray takes passing through three transparent materials. The indices of refraction in materials 1, pab6 qd/0ox 8kz ma7;j2, 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 5.*eg gw51 ekv23fqm uv w;laythe path taken by a monochromatic light ray traveling through the*;m2 fe .vawyqugg5 lvw513kree 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 trav r( d are1m( sttpt-9)5xc+fkkeling 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 incidenwgwnf9;v/300n iwjv4 qom u( pt on the surface of a rectangular block of glass at an angle ovw3mf ju0o0 gwwnpq/;nv(9 i4f $45^{\circ}$. 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 r sj+9e qdd*-b a piece of glass. Wdr9bq- *s +djehich one of the labeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatioo,+ qb9w(eq qc light enters the right-triangular glass as shown. The glass has an index of refraction of 2.00 and it is surrounded by air. W+q(o ebo9qwq, hich one of the lettered rays shows the path of the light after it exits the glass?