11.24: Two wave pulses travel6 )v.qnfh42mi o7o vwzs8e9y-c 0vkohu/p v9e to the right 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 oivp.7o-/0vqh)o42f6vem owkyc 8 vue 9z9h ns f the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the aibn rs.gy6/:u mr and strikes the surface of a plastic block. Which pair of statements correctly describes the phase chmsyu:r b6/.ng anges for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward througll z)5+0 13aubms qg:ksi 7wzlh the point labeled B in the diagram shown. The ray reaches a flat mirror placed at an 0s3zka5bliu:z q1 s+llwg)m7angle $\Theta$ 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 i+ sxja(1v,r f kmn0.yon

  05.18: A student hold a hand mirror to observe the back of her head while fk /njx/6uiw-y(4p restanding 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, y- 6e4/(r niwpxujkf/she will see the back of her head how far behind the wall mirror?

  14.25: It is observed that a li (hme;fk y8eq+r 06benght ray changes direction when it enters a new material. Which onene68rybem (e; +kqf h0 of the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelemlx c3.odtr4 /ngth of 500 nm in air has wavelength 400 nm in a transparent material. Whl.3xc/ d4o trmat is the index of refraction of the material?

  98.04: As sound travels from steel into a-,z ,7 vom/ wkoir8;* kmpxgcxuz f2x8ir, both its speed and its:

  00.01: As a wave moves from one 5q30vmsxt *qqprhwcqj7 g720 medium to a second medium with a different index of refraction which of the follq7 rw2g5 qq 7h3*qmv c00pjxstowing wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single fr;;vyt a gmebd fsg*3+1equency 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 agv3tsfb;1+ *d;gmye from air to rock?

  14.28: A waterproof speaker placed at the bxq4p; :rmnw k1ottom of a swimming pool emits a sound wave that travels toward the surface of the water. In the water;m1x kqw4:npr , 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 glass49j7li fkjknu +,os+f block with an angle of incidence of nk7k4,fljf s ++iu9oj$0^0$. 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 onp3iz,tf b514e6ppupvhwpf 12 a boundary as shown to the right. Which segment best represents the refracted pe2h1p 5 6wp pt fui31zpv4,bfray?

  98.17: Which diagram best represents what hp:m+mcf5*/bfii,u oh appens to a ray of light entering air from water? Air is at uihmof,b 5 fmcpi/:+* the top in all diagrams.

  94.11: The critical angle of a material is the an*d6l rhj ra4f/gle of incidence for which the angle of rel*6frr4h/jd a fraction is:

  95.12: The principle underlying fibe3bjs, zlalrjh*z; ; +er optics is:

  98.36: The critical angle in ay3e3v/ij2 lui 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 with an index of refjzkso)o6ugeus51z. i :bi/s -raction of n = 1.5 to material Y with an index of rsikeu gz.j b6 :z-os15)u/oi sefraction 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 diamondjf(xc8j 1e6.: hechx5 lyqpxtv gq+ :2 and a piece of glass by observing the critical angle of the light in each material. Glass with an index of re1:q c+htyl :xj5vxf. xgqj(p6 he2c8efraction 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 cljr +h32kz* -sp0jnxuq ear material. When the light makes an angle of i njp3h 0zjkq2-srx*u+ncidence 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 em dqn:9r)9vpvo w1q0,lgc 1md mbedded 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 thm,g11n9dvm ql 9vo )qd0wrcp :e laser and target. The value of n is:

  95.31: A beam of light passes from medium q u83f-k px7+sbvf9 d d(jwk(l1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the (( jx+f lb7vsuq8kd3d -k9pwfrespective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from mjiwru7 epn( e t2d6+e-vg .:ueedium 1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about -(t erdeeu gwvpn+e72:ju.6ithe three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a l+ysrbic, kv--ight ray takes passing through three transparent materials. The indices of refraction in materials 1, 2, and 3 ays+bv-rikc, -re 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 path taken by a monochromatic light ray traveyiz0iszwz 7 vr-x5(8*rh5 dtuling through three medis zrt *-(58z5 7xdvi yuiw0hzra.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 travy0xq.e ( x9y6pwjlx8 reling 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 o kus:+x cxuh r.nw1,*sf a rectangular block of glass at an x1 :xkh.nsrsu ,u*+w cangle 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 transmitte +or4 1ufddo.xd from air into a piece of glass. W+ 1f. xoodud4rhich 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 enterkq(4js9au6bfr s)o ov 0 scq1/s 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 lettered rays shows the path of the light afte6vkc) oqj 9u(r4 1sf/0 obqassr it exits the glass?