11.24: Two wave pulses travel to the right toward 3oxy)c3 hw5 bba rigid boundary as shown. After reflection of the triangular py3wbbx3 h) 5coulse, the pulses will interfere. 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 surface of a plo1qk5f b/3 ui9-b(pqhzgaq+st gh 3r7astic block. Which pair of stat/- pf31 5b7rhh zq9 g3k qbg(i+oqsautements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the p8rlg w*cut d40oint labeled B in the diagram shown. The ray reaches a flat mi0rut4ld cw8* grror 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 au5uvs 2px2z ;7ug u:pas4j 15nvr /ehoccurs whenever light is incident on

  05.18: A student hold a hand mirror to observe o (zp0 )cppujc+st8gz*m6:eithe back of her head while standing in front o:+ocmpsi) tcgzp0u z8jp e *(6f 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 behind the wall mirror?

  14.25: It is observed that a light ray changes direction when it enters ms*j5 ezl vjf e7xu3q,hg6-d9a new material. Which one of the following choices is the term best associated with this phenome7hvfq*53zmlg9dx6 j ,su- ejenon?

  96.19: Light that has wavelengthm :o9juflfi+ 1 of 500 nm in air has wavelength 400 nm in a transparent material. What is the index ffl 1o9:iumj+of refraction of the material?

  98.04: As sound travels+t6zqd1fq3jhjm c;v kk 1aq66 from steel into air, both its speed and its:

  00.01: As a wave moves f3e z t03 krj5lr*ef reqsdaq u0kz)506rom one medium to a second medium with a different index of refraction which of the following wave properties would NEVER chjr0a5350 ezluz f6qtrr q)dek s3 *e0kange?

  05.47: A sound wave generated from a tuning fork of single frequencyzi8oq5 6vu 4um travels from air (with spezmq548u 6uivoed 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 from air to rock?

  14.28: A waterproof speaker placed at the bottom of a swimming poox p p-c4+c3o() kphnvgl emits a sound wave that travels toward the surface of the water. In the water, tp-hgc)(kc+xn vop 4p3 he 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 wljb hda4+7l 1 md+)wrglass block with an angle of ilwlm +7)a1rj db+dw h4ncidence 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 sh7(oqucvd y)k2r1s. a tlp(p8movm :.xown to the right. Which segment best rx(v p.m m2v:kp1s8o.aqdl yr(u7)c toepresents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light entering ai3+2 i /enev4m4tey5 -ktqvc8kqvl jh0r from 3k+ivqenc/ ytjel 5 h0 q2kvvm448-etwater? Air is at the top in all diagrams.

  94.11: The critical angle of a materiaahh-idj*x1 w9l is the angle of incidence for which the a19iah*dw j x-hngle of refraction is:

  95.12: The principle undeuqzh/g rea6f7ge q 85hk4wc+.rlying fiber optics is:

  98.36: The critical angle in a transparent substance surrounded by ai.n97. h3h9 m5xdexzn9iolgmh r 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 wis o/bh72 hjx;gth 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 material Y is2s;hjh 7g bxo/ v, what is the speed of light in material X?

  03.15: A jeweler can distinguish oacd8 xo2m(c/bd30) i96tfshypq3 gz between a diamond and a piece of glass by observing the critical angle of the light in each material. Glass with an index of refraction of 1.52 has a critica3ic f agd2)s0(6cpdyx 8oz3h b/mq9otl 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 llq k*25gnkfeqq, kd/ (ight makes an angle of incidence equaq (fknq5de g*2/kk, qll 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 o/c o+rw- qsjpzo0)q4:f e3hwgd 2wfw1f 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 value ofr0wq3+e)wj 2pzd:c4w/ w f qg 1hfs-oo n is:

  95.31: A beam of light passes from medium 1 to medium 2 to medium 3 as shown in rhep x-+aq-c)v j p02ythe accompanying figure. What is true about the respective indices of refraction (n1, n2, andhc2vr-j-ep y q+0)x pa n3)?

  00.14: A beam of light passes from medium 1 to medium, z3:ija5pjni 2 to medium 3 as shown in the diagram. What may be concluded about the t5jnj azp :i3,ihree indexes of refraction, n1, n2 and n3?

  97.24: The accompanying f 4 ;amu1ho* +gon(tfndiagram 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, n ;f+h o(m*n1ongt4ufa2, 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 f*w5lv0i. n 9 ziejlq(by a monochromatic light ray traveling thf(zi.vwl q095iej l *nrough 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 traveling in glasdy; jnqk uskx::2bd5 6s ($n_g$=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 incidbtq1v:a2t4zd.*l td n ent on the surface of a rectangular block of glass at an angle zqna:dt1 b.*v2l4td t 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 a piece of v 2 vai(y9kggrd +1ew* ybq(pof.:zc *glass. Which one of the labeled arrows best inv2yg*bk d *(:ycp9.iqro (v+ gwzefa 1dicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enter)(bvyg dk:ahvnf 8 6i: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 ni :by)(fv6a kv8hd:grays shows the path of the light after it exits the glass?