11.24: Two wave pulses travea9f+4q:yw, u + hojrese76msml 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 of the pulses when the4+fjra+7:w 6syeh s q9mue o,m centers of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes the surface of a plastic+w-w2fw s i*mr,zyh+/yr:cj*e+q8 gela ukr7 block. Which pair of statements correctly describes the phase changes for the reflected wave and the trquc7 w8yf2ae*+y/rjl +mr*w,es:kz+- hwri g ansmitted wave?

  12.02: A ray of light passes straight downward through the point labeled B in 4q0( osjmmn;lthe diagram shown. The ray reaches a flat mirror olsjn m40(;qm 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 w;ojs p t.d:2xchenever light is incident on

  05.18: A student hold a hand mirror to observe the back of her head while stanv y4a3aimwil4q(rf/ 9 ding in front of and looking into a wall mirror. If she is standing 4 ft in front of the wall mirro r/aml 4qa4 wiy93f(vir 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 itqu1w3nu7q 9jg6b*s mm enters a new material. Which one of the following choices is the term best associated with this phenom quwj1u9*g6 bmm7qns3enon?

  96.19: Light that has wavelength of 500 nmrb k 6+ ) +g7l*pflv1boyiksu.u6fc /l in air has wavelength 400 nm in a transparent material. What is the in+ .ukc+lof lbbpvg 1l)u6if7*6y /ksrdex of refraction of the material?

  98.04: As sound travels fr3s ag,q6-pmf bom steel into air, both its speed and its:

  00.01: As a wave moves from one medium to a second medium with a different inz5. o7c 9r9pquwtr) kpdex of refraction wh)t r rpkc.7p9u5ozqw 9ich of the following wave properties would NEVER change?

  05.47: A sound wave generated from a tuning fork of single frequen0sgv4yqk gg3 ;wep b,,cy 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 from air to ropg,v 0,yg ;ew4g3qbks ck?

  14.28: A waterproof speaker d 5smuz 3t)1+hi9hj-nt dy*grplaced at the bottom of a swimming pool emits a sound wave that travels toward the surface of3rsg91-5mu+ tjd)ziyh * htd n 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 rectangult1eu2+ nx* 9n:hbcrinar glass block with an angle of i:h*r12e+inbn x9t uncncidence 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 bo e w6lp*kvd8.fs)j.rm xzc(fy(1 w4gaundary as shown to the right. Which segment best represents the refractex68deys.4(ap( klw* v.w mfjgr)1cfzd ray?

  98.17: Which diagram best represents what happens to a ray of light entering r oo9luoyx:t00f, ,xlrqza :*air from water? Air i9 or:lloxrau x0qt:, *0,fo zys at the top in all diagrams.

  94.11: The critical angle of a m o2b8 n(j(rglr7zz,ceaterial is the angle of incidence for which the angle of refraction is:zbcn72( (gjr8 ro,el z

  95.12: The principlenr eymej( kuw6lt4)5u - ko()v underlying fiber optics is:

  98.36: The critical angle in a transparent substance surroun/p ksdtnnm2r 9-po( z0ded 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 gv;jjz7+8ui qu5qq. pvbn ovd(t :/l) = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of light in material Y is v, what is the speed uv(+zojlptgdvvu :qj/)ib8n. ;q75q of light in material X?

  03.15: A jeweler can distinguish between a diam c 9m(zqd 2oab7b(i*orond and a piece of glass by observing the critical angle of the light in each material2(7o (ba *or9cbzqdm i. 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 material. When the light makes an f)3 zgh*tw/e 9zwos2 gesm9k1h:z.ybangle of insyk 3mb s/o9g2 zwe)wh*.:gehztz1f 9cidence 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 mat x/zg0,hap /2hr*dparerial 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 the laser and target. The value of n is:xr r/ap h dph,*g02/za

  95.31: A beam of light passes from medium 1 to medium 2 to medium 3 as showpbv na(d.6 w )ao1rteid g);u.n in t)u) ov(;brwg.i6ed.1pda anthe accompanying figure. What is true about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to mediumn s ac.i80gops.e4 ug/ 2 to medium 3 as shown in the diagicnp eaus4.sg0 8.o/gram. What may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the+v tpq t ;8z)/lcv ul*d,xf.lt path that a light ray takes passing throu;ucl, f xlpt+*q.v/vt8 d ztl)gh three transparent materials. The indices 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 the path fr6q++h e s*zotaken by a monochromatic light ray traveling through +6fqrzoe+*sh 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 glass t,ck q)t6 ihxl; u5+.pe4jg tdn8abo8($n_g$=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 surfaa.id -m6cz.)egjk )orce of a rectangular block of glass at an anglemeiz6-..) )rdj aok cg 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 trez oj,c2h/ipj4/ u- zkidd8f0ansmitted from air into a piece of glass. Which one of the labeled arrows best indicates the path j2h/oidp /ze,if4k8cjzu d 0-of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass as sc0u9 *l.g imxuhown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of the lettercimg u.lu* x90ed rays shows the path of the light after it exits the glass?