11.24: Two wave pulses travel to the righty c.q obu;cj6mix /;+ y1e,iqw toward a rigid boundary as shown. After reflection oqc. 1uc/j 6;w ,;yiye bqmx+i 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 individual pulses coincide?

  08.30: A light beam passes through the air and str /:spv,6 o3wvd powsb6ikes the surface of a plastic block. Which pair of statements correctly describes the phase changes for the reflected wave a opsp :,bwodvwv 66s3/nd the transmitted wave?

  12.02: A ray of light passes straight downwab8blon0dgn7 -zwk n ; lgod7c an*/30lrd through the point labeled B in the diagram shown. The ray reaches l o3w/ncndb*a8kg-nnz7;7lbl d 00goa 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 reflechp siv 13d- ece)t pfsb2n:6s-tion occurs whenever light is incident on

  05.18: A student hold a h(f2(dc;)ly oqc(; bgh,o wvum and 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 mirror 1 ft behind her head,h ou(vfcy; lwc)m,b;2 qdog(( 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 itwbw r3tyoo1 xp+xagdi8+; ;y( enters a new material. Which one of the following choices is the term bestr+x dyp8ogw13x bto iy+;w;a ( associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in aigbh f d3s- ac5..;db2cwc,xqir has wavelength 400 nm in a transparent material. What is the index of refraction of the materialac.wd . x3 qi-;cbbf 2dcs,hg5?

  98.04: As sound travels from steel into air, both its speejtik kws ob vej6 r,9.-bd(:3yd and its:

  00.01: As a wave moves from one medium to a second medium with a different indem aa u/gr+:,hhx of refraction which of the following wave g+u:aahrm,h / properties would NEVER change?

  05.47: A sound wave generated from a tuning fork oqii (t3 cdx-v0*b8qzc irr44hf single frequency travels from air (with speed hcvrzt8b-(40 r4x cd3q qii*i 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 tz e,jk*vo++)hj z kihx)k+ .rwhe bottom of a swimming pool emits a sound wave that travels toward the surface of the water. vzo.+ h+r)kjzwk+h )keij *x, 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 rectangular glass block with an ana1jewf- +2lzifs :. sdglsidez f: w-a2f1+.s lje of incidence 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/44g;pt arh b5i )nfya as shown to the right. Which segment best repi4yg h)f5b/p4anr; atresents the refracted ray?

  98.17: Which diagram best represents what happens to a ray8blp5;m: atkw l16jyn of light entering air from waterka l658 wl b1;npj:myt? Air is at the top in all diagrams.

  94.11: The critical angle of a material is the anglei3 *ll9r+zvqf)g fj1 6 hhn*ih of incidence for which the angle of r)h* vhgh3*nfi9lfq16+zl jirefraction is:

  95.12: The principle underlying fivqcg; 3v q84mpc(:ptz sm9n4etwh-,eber optics is:

  98.36: The critical angle in a transparenxb 3d oy+:gjzf5+sba,t 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 maty;o--ohozj* hnkg8s 7v-lu/g erial X with an index of refraction of n = 1.5 to material Y with an index of refraction on-l- jvu ;y gzhoo* hs7go/-8kf 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 piece of glass bytfqkd,1ik ,zn 7hn (b76unus4 observing the (hk17tuf,nq,k n u476biszndcritical 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 material. Wheu- i1 tnr: qzil+4*.(hqz dgkgn the light makes an angle of incidence equal toihir*tnk gz+q z .-(41gql:du $30.0^{\circ}$, 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 mafn;owtqoycuc 6f872*terial of index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying f6u8 f7 ycoqf2; twonc*igure 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 2 cdelx7 h9z 4)q *q/jryto medium 3 as shown in the accompanying figure. What is true about the respective indices of refraction (n1, n274cdyjq hlexq *r9/) z, and n3)?

  00.14: A beam of light passes from medium 1 to medium ic) v.qp8e2p v2 to medium 3 as shown in the diagrv.qpp2ec)8v i am. What may be concluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanybw-tdgfr- -v .rz47r vccha,;ing diagram shows the path that a light ray takes passing through three transparent mat- -hcrzr.cvfa7 4d,v wbtg-;rerials. 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 pa3i8u8 4wjaby i 9y.u5hjlmra sb1 u(;dth taken by a monochromatic light ray travelin(m8yj5u3s;d wr 8 iuj4a .9lyu 1iabbhg 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 traveli6mki vat5( b v.omir92ng 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 om-/2 kyag-ycyn the surface of a rectangular block of glass at may-yy g -/ck2an angle 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 gcb -*psfzb1o5l y+*-)nxtqlair into a piece of glass. Which one oo5ncf 1)g sp yzt*qxl*l b+b--f the labeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular g/ wxpczn -9+:wro8-npradc 8p lass as shown. The glass has an index of refraction of 2.00 and ic8n8-xcn+wrzo/ -ap9p:pr wd t is surrounded by air. Which one of the lettered rays shows the path of the light after it exits the glass?