11.24: Two wave pulses traveopfc6zan51 z2by5i/y l 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 the centers of the individual pulses coio z5c 5 i2yfa6bz/pyn1ncide?

  08.30: A light beam passes thxw,)a mb n)(hhxyt(s96 ntkk4kx7 l *qrough the air and strikes the surface of a plastic block. Which pair of statements correctly descrit ak ky*q6 h),t mxh9( (xn7)4wkslnbxbes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight dlj,a 8.:kd m2vxxg1zp ownward through the point labeled B in the diag.:jx2dm v1 lg,xzp8a kram shown. The ray reaches a 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 reflection occurs whenever ligeu9m i8zj(2n4) wjrmght is incident on

  05.18: A student hold a hand mirrorw 6pxop/e8 sm) 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, she will see the back of her head how far behind the wall mir m6wse8o/pxp) ror?

  14.25: It is observed that a light ray changes direc;1npzyqkg2,o.t d34 bxmg :no ( o6pqction when it enters a new material. Which one of the following choices is the term best associated with this phenomenonn2mtz4y .cn (o :,dx1p63 ogqbq k;pgo?

  96.19: Light that has wavelength of 500 2 emkkl ;4vunfa.3lg.q3es 1t nm in air has wavelength 400 nm in a transparent material. What is the index of ltu2e vefg43;m.s3kqk 1 . nlarefraction of the material?

  98.04: As sound travels from steel into airjqcv :9u3npy6 , both its speed and its:

  00.01: As a wave moves from one m +dys tni54cqhz4k37ik0sea1 edium to a second medium with a different index of refraction which of the following wa s3cznkty7a45iqsikd0 h1e +4 ve properties would NEVER change?

  05.47: A sound wave genezu y hosgjie/;l2535v rated from a tuning fork of single frequency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statemelo 5u3vi ;/ye25hgzjsnt 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 pool emits a smxn (,swszm;d( py8p3ound wave that travels toward the surface of the water. In the water, the sound wave has a frequenyx8sps (w, m;nm3 (dzpcy $f_{water}$, 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 5te1y 0ie8zg, qfkoz4block with an angle of incidof qy,081zgieet5z 4k ence 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 tzp(0j . hk8fy.h)ndl +nps;dpoint P on a boundary as shown to the right. Which segment best represents the refracted rhpnkn8jhd yd0tpl;fs(+. z).ay?

  98.17: Which diagram best represejz1/ u:b1+pnvx *(z f:c ke mwxqrw1r0nts what happens to a ray of light entering air from water? Arx (1*qe:z/u1m0 z 1w+xc kjb prwfv:nir is at the top in all diagrams.

  94.11: The critical angle of a material ismvhv)/: f6k-alio v f7(9zr sg the angle of incidence for which the angle 9oh:f7iav)s l(vg -rzm k/vf6 of refraction is:

  95.12: The principle*pi l9)gh /t dzqod0ir1w* uplzay(7. underlying fiber optics is:

  98.36: The critical angle in a transparent substance surrounded by air is spev-20es5 4r6icwk3: jj0vj3el b je/ h mv)e$30^{\circ}$. 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 ga 4.bobh .,uerefraction of n = 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 of light in material Xg, u.4ah be.bo?

  03.15: A jeweler can distinguish betweq.ewokahxyk871 (y+o en 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 critical ayao+k1keox8(y q7 .w hngle 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. Whdj3dyb5( w9w) tkv3a zen the light makes an angle of incidence equa wd(b59k3v)z tjay d3wl 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 materigz,ux0m8;,d i0su9dm i cb*m ial of index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying figure for the poiz 0ug*c dmd0iixm9m b,;u8s,sition parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 to medium 3 ao,*j*je g e;ea)yme5h*ec xs(o5zx4ws shown in theaeh c ey)xm,5 exz5eo(j* w*s;jg4 oe* 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 medium 2 to m6fixl4**.ppzgzrg3 i edium 3 as shown in the diagram. What may be c6z4.pz 3 igxli*fr*pg oncluded about the three indexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the pak b baxrx1/n71m.ptr2 th that a light ray takes passing through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, respectively. Which 1rxp1ktb2rnm7x / .ab of the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochromatic lig/ak) mf obv0*4tl:g qyht ray traveling through three media.The symbyfm)lb0 g t*qo/ a:v4kols $v_1$,$\lambda_1$ , 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 lightl2r .zljhx(,gd0 o-ebru:qk: traveling 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 rectangular block of glaau4j(a:4h6 :nrkip 1 rpd1d hiss atk(6idh iaha rpur:4dj: 1pn41 an 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 air into a piece of gt)p u gmqc(m/y;.(kc5hrwii) lass. Which one of the labeled arrows best indicates the path of the light ray after it enters the glassii (qtc(cg wkpymmu/rh)) ;5.?

  14.44: A ray of monochromatic light enters the rmfd2g m ;b0 7ja.sthj;ight-triangular glass as shown. The glass has an index of refraction of 2.ms07. 2jjdba;h gt fm;00 and it is surrounded by air. Which one of the lettered rays shows the path of the light after it exits the glass?