11.24: Two wave pulses travel to the right /pacjy , tjt.3kvs, ws01urd6 toward a rigid boundary as shown. After reflection 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 individuju0/6pc ,s yw1 ,avst.3r jktdal pulses coincide?

  08.30: A light beam passes through the air and strikes the surface ozon;i )sb3rdkd7 fv,nlk ::6,eqji3 nf a plastic block. Which pair of statements corre rl vbknzi j;3d7q)d e3,nnok i6:s:,fctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straigcyfdn ywv6dj 1c:apgd2 3e*k18d/ (pa ht downward through the point labeled B in the diagram shown. The ray reaches a flat mirror placed at an e 3v(y k6:jpwd dc81*c 2 ganpfdyd1a/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 inci mgsqy87*q3ww4 ib mg;dent on

  05.18: A student holbgp;h t +q79psd a hand mirror 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 mirror and she holds the hand mirro thbqsp+ p7;9gr 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 directioeim nvv5ql; j8.nhbcn7n f+t *y-ck+(n when it enters a new material. Which one of the following choices is the term best associated with this phenomenon-ykvn;i tcbjcmh 7ql+ 5fne8n(*+.vn?

  96.19: Light that has wavelength of 500 nm in air has 3 zi8cbv -cb;xwavelength 400 nm in a transparent material. What is the index of refraction v3;-8ccbzixb of the material?

  98.04: As sound travels from steel invcsjv5 ./b1z66y k bj 5os+;znrlgzl1 to air, both its speed and its:

  00.01: As a wave moves from one mediq0 kezj+/ 8* qc(;s 6vyhtrtpxum to a second medium with a different index of refraction whe6 *+0 vz( jsp rhk/qqct;xt8yich of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequency travels fro*wz*;qh + e+o 6h6njup f4azmim air (with speed of sound 340 m/s) into rock (with speed of sound 15 uwhazmh; pj+ qz4 e6oi*n*f6+00 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 a ln8 db4ue*f;k7)ojkx :j4wjat the bottom of a swimming pool emits a sound wave that travels to jx;n:k7f4dw *ea8lkuj j )4obward the surface 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 wh,yspl+z + qri4ite light strikes a rectangular glass block with an angle of incidence p ,r4l+ qisz+yof $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is directed towar+xa/xne3vh :n d a point P on a boundary as shown to the right. Which segment best represents the refraca+h:3e/v x xnnted ray?

  98.17: Which diagram best represents what happens to a ray of light enterin;:u zu d+cvsobw 4hw by,qb;;.g air from water? Air is at t;b:y ;vhsqdcw uzbo.b; +u, 4whe top in all diagrams.

  94.11: The critical a fxk6m nvw/(r)ngle of a material is the angle of incidence for which the angle of refract v n(rfk)6/xmwion is:

  95.12: The principle underlying fiber optwv//2f hq72oezg0u/( yfsnsg ics is:

  98.36: The critical angle ine 7nlzt,xq-:*o2 7xdr1glg 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 from material X 4mqzaeck-l -avg6 q70 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 materiacaqqk -vgmz 07- e6l4al 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 ok xy s n vce-,41n6c/niaqs+l,bserving the critical angle of the light in each material. Glassne1n ,c-,4 lacisys/nxq v+k 6 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 materialn om*uey0j5 rtwx9 l16 0hwl-i. When the light makes an angle of incidence ejou5n9 160iemywx*l r 0h-wltqual 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 inlq 6x 9ubqsju* t/w,8-.ic4:llpdwef a material of index of refraction n. The laser beam emerges cl9.w pq * u4/ dutf esj8ilb:lq,-6wxfrom the material and hits 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 rbb gzryrs2 jp),1yu5* pla1)2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of refraction (n1, n2, and n3)? a,p r*lj)rry2s ) 5ubzp11ybg

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as shown i5 of2 v hw0j-pc/qxvm*n the diagram. What may be concluded abojxv- p 02cwmvo f/5hq*ut the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that cc;:5u3yzny; y hi(yq a light ray takes passing through three transparent materials. The indizcy;5uyc qy;3:( y ihnces of refraction in materials 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 thekx( 2zrys1 wt)8h8afg path taken by a monochromatic light ray traveling through three media.The symb8 fha82wyt( zg1xrk) sols $v_1$,$\lambda_1$ , 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 travm u8nlrlao9m6f) s; 7heling 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 regf)y 6g69n*r 7bj sfcyctangular block of glass at an angle gb g7*ff)jyy6cs9 nr6 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 into zo :sey64llka5udk 6j*b ++dg 8apzo. a piece of glass. +ea8l.ksg o py4z5 o6+zb*d k ad6:lujWhich 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 ent *tl,q on7q;rkers the right-triangular glass as shown. The glass has an indlq*;o7 ntqk,r ex of refraction of 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?