11.24: Two wave pulses travel to the right toward x89a-2 ysxdfn a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which -xas fx9n8dy2 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 pyrrrlv- n ;,w;asses through the air and strikes the surface of a plastic block. Whirv, ;l;ynwr- rch pair of statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straighf4c7 nrgy(:cf1oja j. t downward through the point labeled B in the diagram shown. The ray reachf7 ar. 1j4yoccfg:j (nes 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 whenever light is incident po2sj:w: 3wuqn7 3xtv on

  05.18: A student hold a hand mirrxxw+(kq:p + enor to observe 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 mirroq+pxe+ (w :xknr 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 hkxi7p1w za28j)g(4 w9w xk uethat a light ray changes direction when it enters a new material. Which one of the following choices is the term best associated wiu g4x (kkw8z 2 7j)x1whwaep9ith this phenomenon?

  96.19: Light that has wavelength *+p 5mh44z. )sw-dbfyty7 d tsuuj6jbof 500 nm in air has wavelength 400 nm in a trans4y6f uhd7j+zsbt *4bwy .) j-dps u5mtparent material. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, both its speed and ec *av 3irajf6h0zjak/*67 lqits:

  00.01: As a wave moves from one medium to a second medium with a;g: p i-40)fh vutrlcx different index of refraction which of the following wave properties would Nci:-gthrlfx vup;0 4)EVER change?

  05.47: A sound wave generated from a tuning fork of single fq*f8a4u dr wr8requency 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 sod*q48wuarf r 8und as it passes from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swime.,1to/sxyv uming pool emits a sound wave that travels toward the surfyx/ uot e,v1s.ace 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/go h0oj()g.+a iikorleym1 + b)qgj1 rectangular glass block with an angle of incidenceba ghq r m.j1ok0/l(+jiyo+)1 ggieo) 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 directed toward a point P on a boundary as sho2lw8u y iw:eu2wn to the right. Which segment best represent:yu2 8uw wlie2s the refracted ray?

  98.17: Which diagram best represenyw got0ou87b1ly e d:+vx6c i:ts what happens to a ray of light entering air from water? Air is at the to6iy0g :7vto+18y bcw:oul dexp in all diagrams.

  94.11: The critical angle of a material is the angle of incidence for whi+ -kbmm:)zapqxu* z+rch the angle of refracti+)m akubzmxp-:zq+*r on is:

  95.12: The principle underlying fi x(ofm6mn*35hjj cg9 zber optics is:

  98.36: The critical angle in a tk 2rn9gd zt *)tm*+tnfransparent 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 of n = 1.5 :,;tk)dv i3 k06tlf.zd(c46ycbzzatg:h rom to material Y with an index ohzayobc 0k:6gf:iz6d,k3 ( vt.ttdr)z 4c; mlf 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 piech3trh84iw /vx e of glass by observih/tvh 3wxi r84ng the critical 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 materiawb2n0f.b 2+jft 3i)g,dxpctxv 4xm ; wl. When the light makes an angle of incidence equwm3wx ;22xvfbit+0d fg4)n. bxt,pj cal 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 embeddedwm5ncu 86k m3*gc; nyz in a material of index of refraction n. The laser beam emerges from the material and hits a tarmy 6 mcngz5* u;nc83wkget. 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 xx 5k*obfa10v from medium 1 to medium 2 to medium 3 as shown in the acfo1bk5av0 x* xcompanying figure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of lighrq9r5dt,vq, to q2*gey 3p e8gt passes from medium 1 to medium 2 to medium 3 as shown in the diagram. Wha tgqeqvrgpr9dqt*, e 2 y5o83,t may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a l ,jz66m,p sxriight ray takes passing through three transparent materials. The indices of refraction in matem6j,rs6x ip z,rials 1, 2, 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 the fa0w;s- e6 mebpath taken by a monochromatic light ray travelime- w0aef;s6bng through three 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 t )zluuw l-nba8.y t41uraveling 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 rectau,, iar ;/; cmb7(k elc(hfk crk*7peingular block of glass at an angc u,kkccr,7/( ;afi(7pehem*k ri;blle 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 y0 avgiwzlqqo515 k 28into a piece of glass. Which one of the lakliow 0 q2z55 81vgqyabeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochdxl7 v 2 -fr)cml+t:ziromatic light 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 letttx f2md7 rzi)-lv: +lcered rays shows the path of the light after it exits the glass?