Prac%ce Quiz 3 Part 1. These are Q s from old quizzes. I do not guarantee that the Q s on this year s quiz will be the same, or even similar.

Transcription

1 Prc%ce Quiz 3 Prt 1 se re Q s old quizzes. I do t gurntee Q s th yer s quiz will sme, or even similr.

2 &69';"+0(*&6>"" High qulity fir rted t 0.25dB/km. By fcr does tensity chnge fter trversg 10km such fir? Wht speed mteril criticl ngle ir 61 degrees? c 0.9c c 1.1c 1.2c 0.5 less thn 10% left fter 10km You re stg 2.3m horiztlly edge 4.5m deep lke, your eyes 1.7m bove wter surfce. diver holdg flsh t lke botm shes so you 6) Two cn mirrors see it. re rrnged such wter mkes y re 42 prllel degree ngle x y x verticl, t rectngulr coordte horiztl. dtnce diver edge lke? lser 3m m enters mirror 5m rrngement, hits 7m ech mirror ce, 9m exits. Wht's 1 tl chnge directi lser experiences? $%&'"&'"(")(*+,"-./*0*"1/.)+02" Depends ry propgtg cidence ngle. wter (n=1.3 strikes prllel slb glss (n=1.6 thickness 90 degrees d=6cm t 180 n cident degrees ngle 40 degrees. Wht's ngle ry mkes wter rml terfce fter it exits glss slb? 270 degrees 25 degrees 30 degrees 35 degrees 40 degrees 45 degrees 360 degrees MULTIPLE CHOICE. Choose e lterntive st sttement or nswers questi. mximum frequency humn er cn detect 20kHz. you wlk room 7) t pot re 15m re two sources, source e t sphericl 100kHz sound e wves, t 102kHz. you Will mesure you her sound nythg? tensity Wht 750mW/m^2. secd source t 125kHz? How Yes, much yes. furr do you need wlk, directly wy source, until sound tensity 6) 4" No,. -4.4dB. Yes, 5m but ly cert plces room first 15m cse, secd 20m cse. Yes,. 8) Microwves No, yes. trvel speed, c= m/s. t frequency 10 GHz se wve c wter molecules your burri vibrte. Wht ir? 1GHz pressure = mplitude 000 cycles/sec. sound wve s, hppens decil level? -2dB 0.3mm 0dB 3cm 2dB30cm 4dB 300m 6dB 3km 9) You bot see n moored irplne 7) lser stright m fixed overhed locti, t 633nm wves ltitude propgtg mke 5.2km. it move ir Sound when up it strikes down. trnsprent plne, however, spcg7) seems comg mteril t n cidence pot bck ngle lg 50 degrees. plne's ngle pth t refrcti 35 degree 27 ngle degrees, tween wve crests 20m speed wve 5m/s. How lg does it tke bot verticl. Wht plne's speed, mteril? ssumg sound speed 330 m/s? 3" go p crest botm trough? 400 nm 500 nm 600 nm 700 nm 800 nm /s 1s 200m/s 2s 300m/s 4s 400m/s 8s 500m/s 16s t soccer gme, "wve" might circulte sts move round When sound wve psses ir wter, properties wve will chnge? stdium. In th wve moti, people st up sit down s wve psses. Wht type frequency f. wve would th chrcterized s? lmbd. 1 polrized wve lgitudl speed v wve wve. trnsverse both f wve lmbd grvittil both v lmbd wve sol wve Wht length necessry n orgn pipe produce 22Hz ne pipe open t e

3 cyldricl tnk 2.4m deep full brim wter (n=1.3. Sun first hits prt botm tnk when rg sun mkes 22 degree ngle horiz. Fd tnks dimeter. 1.5m 2.5m 3.5m 4.5m 5.5m Mr. Evil throwg temper, shootg fh pd lrge clir gun while stg shore. To successfully kill fh, should he... im directly t imge. im sly bove imge. im sly low imge. red lser ms strike n ir -glss terfce cidence ngle 50 degrees. glss refrctive dices respectively red, will ngle tween two ms glss? 0 1 degree 2 degrees 3 degrees 4 degrees ry propgtg crystl wve length 540nm. It strikes terior surfce crystl t n cidence ngle 34 degrees, emerges ir t 76 degrees surfce rml. Wht 's wve length ir? 500 nm 450 nm 630 nm 940 nm

4 $" ry glss cident wter-glss terfce, t n ngle cidence equl hlf criticl ngle terfce. dices refrcti wter glss re , respectively. ngle refrcted ry wter mkes rml closest : 35e 25e 40e 30e 45e When trvels ir wter, Dpersi electromgnetic wves refers fct wves rdite out ll directis pot source. refers phemen where ry chnges directi when it psses e mteril r. ccounts fct sky. results fct wves dferent frequencies trvel t dferent speeds mtter. underlyg phemen utilized some types sunglsses. thick glss plte (n = 1.5 lies botm tnk wter (n=1.3. ry enters wter ir, mkg n ngle 72 degrees rml ir. Wht ngle does ry mke rml when it plte? 10 degrees 20 degree 30 degrees 40 degrees 50 degrees Red lger thn. Compre ir frequency. Red frequency lrger thn frequency. Red frequency smller thn frequency. y hve sme frequency. re's t eugh mti.

5 xm 40W; 80W me 20W; 40W 10W; 20W 10W eir cse ULTIPLE CHOICE. 40W eir Choose cse e lterntive st sttement or nswers questi. piece glss (n=1.5 immersed diiodomethne (n=1.7. ry hits glss t n cident ngle 40 degrees. Wht's ngle refrcted m glss mkes rml terfce? 33 degrees 47 degrees 40 degrees 54 degrees lser m shes verticlly upwrds. Wht lser power th m support n electric field n EM wve trvelg rst oscilltes up down. In directi flt piece lumum foil mss 15 microgrm dimeter equl m? does mgnetic field oscillte? () ssume lumum fully reflects m. (b) ssume lumum pitch blck, rth-south fully bsorbs ll m. up-down 40W; 80W rst-southwest 20W; 40W rthwest-soust 10W; 20W est-west 10W eir cse 40W eir cse n electric field n EM wve trvelg rst oscilltes up down. In directi Wht's mimum thickness sop film (n= nm will undergo does mgnetic field oscillte? cstructive n electric terference? rth-south field n EM wve trvelg rst oscilltes up down. In directi does up-down mgnetic field oscillte? 300nm 200nm 100nm rst-southwest rth-south lense rthwest-soust up-down circulr perture 1cm dimeter just brely cpble sepertg two objects est-west rst-southwest re 1 degree prt. Wht's two objects? m rthwest-soust m m est-west Porizedd psses sequence two polrizer whose xes polrizti m 60 degrees ngle. secd polrizer sme polrizti s comg e it Wht's mimum thickness sop film (n= nm will undergo hits cstructive first polrizer. terference? Wht frcti cident tensity emerges set polrizers? 300nm 200nm 100nm 300nm 200nm 100nm 1/2 1/4 1/8 1/16 0 lense circulr perture 1cm dimeter just brely cpble sepertg two lense circulr perture 1cm dimeter just brely cpble sepertg two 6) objects re degree prt. Wht's two objects? objects grtg re degree grtgs prt. cross Wht's 1cm seperte two s two objects? 550nm 480nm. m m m m Wht's mximum chievble m ngulr seperti? m 6 degrees #$%&''##("#&''##)"#&$''##*"#&$$''##+"&'## Porizedd psses sequence two polrizer whose xes polrizti m Porizedd 180 degrees psses sequence two polrizer whose xes polrizti m 60 degrees ngle. secd polrizer sme polrizti s comg e it 6010 degrees ngle. secd polrizer sme polrizti s comg e it hits first polrizer. Wht frcti cident tensity emerges set hits 20 degrees first polrizer. Wht frcti cident tensity emerges set polrizers? You re lyg botm swimmg pool filled 9ft deep wter (n=1.3. Wht dimeter "hole" t wter surfce you cn see out pool? 25ft 5ft 20ft 15ft 10ft 6) $%&'("&)'"*+,)&"-./0'*")'*'"+/"123455"6'7-8/'"&)'"-.,9'".'':/"&%"6'"",#

6 cn see it. wter mesure mesure mkes 42 degree ngle.. verticl, t spcg spcg horiztl thickness d=6cm dtnce diver psses psses edge lke? sgle sgle d ms ms d=15 d=15 t micr micr dtnce dtnce L=2.2m. L=2.2m. mximum mximum terference terference 3m n cident.. ngle 5m 40 degrees. Wht's replced replced ngle 7m red red ry mkes 9m,, wter 1 rml?? origl origl terfce fter cn cn it exits glss slb? : : %&'()#*'+&(#,-.,/+/01+#(&-.2+&#/'-#'3#'14'1(#/(#67#+-))#.1#/1#)82'*/()-/*#,-'39:# 25 ry d/4 d/4 degrees 30 degrees 35 degrees 40 degrees 45 degrees propgtg wter (n=1.3 strikes prllel slb glss (n=1.6 ;'15#(&)#/1+2*/-#5'3,)-3'.1#.<#(&)#.2(+.'1+#=)/9>#'<#(&)#,-'39#&/3#-)<-/40?)#'15'3# Exm Exm 8 8 -)5 ##B:7$C#/15#1 d=6cm?'.*)( ##B:DEE# psses psses sgle sgle d ms ms t n cident three 4d 4d corners prm re t locti (0,0), (0,, (6,0). White strikes # prm t (0,.. ngle exctly 40 degrees. orthogl Wht's replced replced prm ngle surfce. red red Wht's ry mkes ngle,, wter dpersi tween Nme Nme #$ #$ rml 2d 2d F"#D:E#+-))3##G"#!:H#+-))3##I"#$:6#+-))3##J"#BH:C#+-))3##K"#6:C#+-))3### origl origl red terfce fter cn cn it exits glss slb? : : 25 (700nm, degrees chnge chnge n=1.516) violet (, n=1.538)? d/4 d/ degrees 30 degrees 4.3 degrees 35 degrees 6.45 degrees 40 degrees degrees Exm Exm 8 8 MULTIPLE MULTIPLE three corners prm re locti (0,0), (0,, (6,0). White strikes CHOICE. CHOICE. In In K#$('P$ $$S#$("P$ $$T#$!P$ $$U#$'($ $$V#$W%$ $$ 4d 4d 7-7- Choose Choose,, how how e e lterntive lterntive mim mim lie lie tween tween st st zeroth-oder zeroth-oder sttement sttement first-order first-order nswers nswers mxim? mxim? questio questio High qulity fir rted t 0.25dB/km. By fcr does tensity chnge prm t (0, exctly orthogl prm surfce. Wht's ngle dpersi tween #$ Nme Nme 2d 2d ) 8) fter trversg 10km such mesure fir?. spcg red (700nm, n=1.516) violet (, n=1.538)? chnge chnge mesure mesure.. spcg spcg d= micr -- dtnce L=2.2m. mximum terference!%#$!%#$ d=15 d= micr micr degrees movie movie "Ptriot "Ptriot Gmes" Gmes" 4.3 degrees dtnce dtnce L=2.2m. L=2.2m gents gents degrees mximum mximum stellites stellites 8.6 terference terference degrees identy identy 0.78? MULTIPLE MULTIPLE CHOICE. CHOICE. High In In K#$('P$ $$S#$("P$ $$T#$!P$ $$U#$'($ $$V#$W%$ $$ dividuls dividuls terrort terrort cmp. cmp. Suppose Suppose mimum mimum dtguhg dtguhg?? humn humn qulity Choose Choose,, how how fir e e lterntive lterntive rted mim mim t 0.25dB/km. lie lie tween tween st st By zeroth-oder zeroth-oder fcr sttement sttement does first-order first-order nswers nswers tensity mxim? mxim? chnge questi. questi. fetures fetures dimeter dimeter 8) fter trversg 1 10km 4 such mesure fir? spcg 8) d=15 mirror mirror micr or or lens lens -- mesure mesure chieve chieve dtnce th th L=2.2m... n n ltitude ltitude mximum 100km? 100km? terference ssume ssume spcg spcg 9) 9) less thn 10% left psses fter 10km sgle ms!%#$ d=15 d=15 micr micr 0.78 movie movie "Ptriot "Ptriot Gmes" Gmes" dtnce dtnce psses psses L=2.2m. L=2.2m. sgle sgle gents gents mximum mximum stellites stellites d? terference terference ms ms. replced red, identy identy )*+,-./01$+.234$5,6606$43-*723$,$608709:0$*;$4<*$5*+,-./0-6$<3*60$,=.6$$ )*+,-./01$+.234$5,6606$43-*723$,$608709:0$*;$4<*$5*+,-./0-6$<3*60$,=.6$$ dividuls dividuls m 1000m.. terrort terrort cmp. cmp Suppose Suppose replced replced mimum mimum red red dtguhg dtguhg??,, origl cn : 6) humn humn fetures fetures origl origl *;$5*+,-./,>*9$;*-?$,$@($102-00$,92+0$B30$60:*91$5*+,-./0-$3,6$430$$ *;$5*+,-./,>*9$;*-?$,$@($102-00$,92+0$B30$60:*91$5*+,-./0-$3,6$430$$ Two mirrors 0.5 re rrnged cn cn such y re prllel x y x : : rectngulr dimeter dimeter d/4!&#$ 9) mirror mirror coordte Wht Wht d/4 d/4limits. ngulr ngulr erth erth bsed bsed rdio rdio stromy? stromy?!&#$ less or or thn lens lens 10% chieve chieve left psses th th fter 10km sgle n n ltitude ltitude 100km? 100km? ms ssume ssume 9) lser m rdius rdius enters erth. erth. mirror rrngement, hits ech mirror ce, exits. Wht's tl. psses psses replced sgle sgle red d, ms ms )*+,-./01$+.234$5,6606$43-*723$,$608709:0$*;$4<*$5*+,-./0-6$<3*60$,=.6$$ )*+,-./01$+.234$5,6606$43-*723$,$608709:0$*;$4<*$5*+,-./0-6$<3*60$,=.6$$ 4d origl $ chnge 1000m 1000m 4d 4d mximum mximum directi size size rdio rdio lser telescope telescope experiences? cn techniclly built. cn techniclly built. 2d cn replced replced red red :,, 6) origl origl *;$5*+,-./,>*9$;*-?$,$@($102-00$,92+0$B30$60:*91$5*+,-./0-$3,6$430$$ *;$5*+,-./,>*9$;*-?$,$@($102-00$,92+0$B30$60:*91$5*+,-./0-$3,6$430$$ Two,#$H$$$C#$!I@$$$:#$$J$$$1#$!I%$$$0#$($,#$H$$$C#$!I@$$$:#$$J$$$1#$!I%$$$0#$($ mirrors 2d 2dDepends mnufcturg mnufcturg cidence preci preci ngle. lenses rdio frequency rnge, i.e. sphericl lenses rdio frequency rnge, i.e. sphericl re rrnged cn cn such y re prllel x y x : : rectngulr 6) d/4 90 chnge!&#$ coordte Wht Wht d/4 d/4 limits limits rti. rti. degrees chnge chnge. ngulr ngulr erth erth bsed bsed rdio rdio stromy? stromy? 180 Dpersi, Dpersi, degrees i.e. chromtic rti. i.e. chromtic rti. lser m rdius rdius enters erth. erth. mirror rrngement, hits ech mirror ce, exits. Wht's tl 4d chnge $ In 4d 4d degrees mximum, mximum directi size how size rdio rdio lser telescope mim telescope experiences? lie cn tween techniclly zeroth-oder built. first-order mxim? In In 7-7-,, how how mim mim 2d lie tween cn techniclly zeroth-oder built. first-order mxim? 6) K9$.10,+$2,6$*::75F.92$!($:? '(#$ '(#$,#$H$$$C#$!I@$$$:#$$J$$$1#$!I%$$$0#$($,#$H$$$C#$!I@$$$:#$$J$$$1#$!I%$$$0#$($ Depends Imge 2d 2d 1360 degrees mnufcturg holdg circulr mnufcturg cidence preci 4 dk preci ngle. lenses lie tween zeroth-oder $.6$5+,:01$.94*$,$!($? m mochromtic rdio frequency first-order mxim? 6) K9$.10,+$2,6$*::75F.92$!($:? Imge holdg circulr $.6$5+,:01$.94*$,$!($? m $L,:77?$:3,?C0-M$$ $L,:77?$:3,?C0-M$$.. rnge, i.e. sphericl t t lenses rdio frequency rnge, i.e. sphericl <30-0$.4$0=5,916$,1.,C,>:,++F$N;$OP$Q$*;$090-2F$C0:*?0$79,L,.+,C+0$4*$$ <30-0$.4$0=5,916$,1.,C,>:,++F$N;$OP$Q$*;$090-2F$C0:*?0$79,L,.+,C+0$4*$$ edge dk, center shdow : edge chnge 90 rti. dk, center shdow : rti. degrees chnge chnge 7) 1*$<*-RM$<3,4$<,6$430$.9.>,+$2,6$ G$ 1*$<*-RM$<3,4$<,6$430$.9.>,+$2,6$ G$ bright spot 180 Dpersi, lser bright Dpersi, movie movie degrees m "Ptriot "Ptriot i.e. spot chromtic rti. 633nm propgtg ir when it strikes trnsprent i.e. chromtic Gmes" Gmes" rti. gents gents stellites stellites identy identy drker thn rest shdow In degrees, how mim lie tween zeroth-oder first-order mxim? In In dividuls dividuls mteril $ drker thn rest shdow t n cidence ngle 50 degrees. ngle refrcti 27 degrees, 7-7-,, how how terrort terrort cmp. cmp. mim mim lie tween zeroth-oder first-order mxim? 6) K9$.10,+$2,6$*::75F.92$!($:? Imge 1360 degrees holdg circulr 4 dk lie tween zeroth-oder $.6$5+,:01$.94*$,$!($? m 5 mochromtic first-order mxim? 6) K9$.10,+$2,6$*::75F.92$!($:? Imge holdg circulr Suppose Suppose mimum mimum $.6$5+,:01$.94*$,$!($? m dtguhg dtguhg humn humn bright or drk, depends $L,:77?$:3,?C0-M$$ $L,:77?$:3,?C0-M$$ fetures fetures K#$P($),$$$$S#$(P$R),$$$$T#$P$R),$$$U#$P($R),$$$$V#$P(($R),$ K#$P($),$$$$S#$(P$R),$$$$T#$P$R),$$$U#$P($R),$$$$V#$P(($R),$ bright or drk, depends mteril? t 6) t dimeter dimeter bright or drk, depends dtnce 6)