THI THỬ LÝ LẦN 2 -2011( KHTN HN)

DAr HgC QUOC GIA r{A NgE TRr.isNG rripr cnunfix xrisrrl pE xrpu TR 4. KIEN TI{UC THI EAI F{QC Z0lt-laro Z nry0n v4r lf Thdi gian ldm,bdi: 90 phut; (50 cdu trdc nghiQm) MA d6 thi743 Vdi mdi cftu hdi clw6i ttdy, anh/chi ledy chgn mQt (01) phwong ttn trd ldi hgp I! nhdt. '-* r- : :o0o : : CSu 1: MQt m4ch dao dQng g6rn tU diOn q6 C = 125nF vd mdt cuQn crlm L : 50pH. DiQn tr6'thuAn ctra m4ch kh$ng d6ng k6. HiQu diqn th6 cqc d4i gifr'a hai bin tu diQn tJ r, : I ,2Y . Cud'ng d6 ddng di€n cuc dai trong mach: A.6.io-2 (A). 8.3 Jt (A). c. 3 J, (mA) D. 6 (rnA). Cffu 2: Khi dua mQt con l6c do'n tu'xich tlao dtln dia cpc (lanh di vd gia t6c trgng trud'ng tdng l6n) thi chu k! dao dQng cta con lic Con s6: A. TEng l€n khi g tdng theo ti lQ l6n hod ti lQ gi6m nhiQt dQ vi ngusc l4i. B. Tdng l6n. C. GiAm di D. Gi6m di khi g tdng theo ti 1616n hon ti le giAm nhi6t dQ vd ngLro. c 14i. Cf,u 3: Hai di6m M vd N trdn cirng m6t phu'o'ng truydn cira rnQt s6ng c6 bu6c s6ng 7, dao dQng vu6ng pha v6'i nhau, trong kho6ng giira hai di6m M vd N cdn c6 mQt vd chi mQt di6rn P dao dQng vu6ng pha v6'i M. K6t luin nho sau dAy sai? A. Trong khoing gifr'a M vd N c6 mQt vd chi mQt di6m dao dQng nguo. c pha v6'i M. B. P dao dQng ddng pha v6{ N. C. MP = Xl4. D. MN:37"14. C6u 4: Trong mQt chi6c radio ngudi ta dd t4o ra mQt rnpch ehgn s6rig ld mQt m4ch dao ddng L-C vo'i C thay ddi duo.'c tir 20nF d6n 80nF. Khi dat C = 20nF thi s6ng thu duo. c c6 bu6'c s6ng ld 400m. I{6i khi d6t C = 80nF thi s6ng thu duo.'c ld bao nhi6u? .4 100 m. 8.200 m, C. 800 m. D. 1600 rn. Cffu 5: Mach dign AB ld m4ch diQn xoay chidu gdm ba phAn tri'L-R-C mic n6i ti6p theo thir tr,L c16. CuQn c6m 'r ':' A' hai di6m A-M, diQn tr6'R nrii giira hai di6m M-N, tp di6n c noi gio'a hai di6m N vd B. tnuan cam L nol glua Tirn k6t luQn khOig chic chin dirng trong cAc ktit lufn sau: A. uay s6m pha so v6'i uax. B. uou s6m pha so v61 uys. C. uap vudng pha so v6i ui,,rg khi mqch ld cQng huong. B. uplp s6'm pha so v6'i uxs.' Ciu 6: Sq'i day AB c6 chidu dAi 90 cm dugc rung v6'i tin s6 Uing 120 l{z.thi hinlithdnh song diLng v6'i 6 b6 s6ng. Khi thay dOi tAn s6 rung vd gifr'nguy6n lqc cdng dAy thi tAn sd nh6 nhAt c6 th€ t4o s6ng dimg tr€n nAy ld: L.20Hz. ts. 10 Hz. C.40Hz. D. 30 Hz. Cf;u 7: HiQn tuo. ng gi xAy ra v6i tAn s6 vA bu6'c s6ng ctra s6ng diOn tir di tU khdng khi vdo trong thiry tinh? A" TAn sri gi6m vd bu6'c s6ng tdng. ts. TAn s6 tang vdL bu6'c s6ng giAm. C. TAn sO khOng AOi va bu6'c s6ng tdng. D. TAn stl khOng dOi va bu'o'c s6ng gi6rn. CAu 8: Do4n dfly AB c6 chi6u ddi 72 cm dang c6 s6ng dtrng 6n dinh rnd hinh 6trl.r cira sqi dAy sau mQt sO tAn clipp 6nh duo. c cho tr0n hinh v6. MN A Khing dinh ndo sau dAy In chic chin dirng? A. Eiem N dang di chJy€n v6'i t5c dQ kh6c kh6ng. B. Bi6n d0 dao d6ng cira di6m M vd N bing nhau. C. Di€m M ve N dao clQng ditng pha. D. Ca ba k€t luQn tr6n dAu ch[c ch6n dirng. ar*/tr)n1' l' 4r 'l'-f.\{4-1-4 C6u 9: MQt mgch diQn khdng ph6n nhanh RLC duqc rnic vdo rndt hidu diQn th6 xoay chiAu Lt = {J acos(a-,r) -":-i Yt kh6ng ddi nhung crr thay ddi duo-c. Cdng su6t tiOu thp cia m4ch di6n s6 cd cirng gid tri ld p ndo d6 n6u t6n sd g6c ro bing crll hodc bing crt2. Ta c6 quan h6: A.ro1 + az=I/JLC B.oi,+ .:,z:2lJLC C.o:i.o:2:IliLC) D.duynh6tkhi(Dr =c.r. CAu 10: Khi dAt rn6t hi€u di6n th€ xoay chiAr-r u : 220Ji sin(I00nt+d3) (V) vitohai dAu cria m6r m6y bo,m nudc thi cudng dQ dong di6n qua rn6y bom c6 bi6u thfic i : J; cos(100nt) (A). c6ngsuAt ti6u thr-r di€n cira m6y bom ndy ld: A. 110 W. 8.440W. c.220 W. D. 191 W. c6u 11: Di6u ndo sau day ld sai khi n6i'd d6ng co'kh6ng d6ng bQ ba pha? A. V$n tiic gdc khi da 6n dinh c.ria khung aay tuon nhihon .ian to" go" "nu tr),rrud1g quay. ^ B' Khdng th6 thay aoi cniAu quay cila dQng co chi bing vi€c cl6o vi trf ba pha dua vdo ba cr-r6n day tr6n Stato. c" D$ng co hoat d6ng dua tr6n nguy6n t6c cria hi6n tuo-ng c6m fng di6n tir. D' ViQc dua ddngtho'i ba.pha cria dong di0n xoay chi6u ba pha vdo ba cudn clAy tr€n Stato la d6 tao ra tir truong quay v6'i tan sd quay bing tan s6 ia ddng dien xoay chidu dLra veo. Ciu 12: M6y quang ph6: A. c6 vai trd phan tich c6c thdnh phAn cau tao cfra m6t ngudn s6ng. B. dring dd nhfln bi6t c6c thdnh phAn mau cria m6t chirm s6ng chi6"u diin. C. c6 6ng chuAn ftuc d6ng vai tio ldm 6ng hu6'ng 6nh s6ng Juong g6c v6i mit lr.ng kinh. D. c6 lSng kinh d6ng vai trd ldm bQ phAn giao thoa 6nh s6ng tuo iu ru"rnau ,a" kh'6c nhau. fAu 13: Y:, yt chlu dong thd'i hai tdc nhan kich thich dao d6ng vo*i chcdao d6ng ri6ng phdn md hai t6c dr-rng au^say rl dQc lfp c6 phuoirg trinh Id xr :3 cos(10nt-n/6) cm vd X::5 sin(l0nt[m. iao aong ta"e ha.p,a vqt ndy thuc hi6n ld dao dQng: A. di6u hod v6'i bi6n dQ bing 4,36 cm. C. di6u hod v6'i bi6n dQ bing7,73 cm. B. diOu hod v6'i bidn d6 bing 7 crn. D. khdng di6u hod. Cffu 14: Micro duqc dich chuy6n t6'i vi trf m6'i cach loa 5 m. So s6nh v6.i Am thr-r duo'c tai vi tri 10 m, 6m t4i vi tri m6'ikhdc 6m cfi vd: A. Bi6n dQ. B. Bu6.c s6ng. C. T6c d6 truyAn song. D. TAn s6. CSu 15: MQt rnpch diQn xoay chi6u khdng phan nhrinh g6m mQt cuQn day c6 hQ s6 tu cam L, di6n tro thuAn R vd m6t tg cliQn c c6 elign dung thay a6l au'o.'c. Eat vao-hai dAu m4ch m6t higu oiqn"trrc "Jv "rriar".* en1, u = U ocos(al) (v6'i ue vd crr kh6ng aoi;. rct lufln ndo sau d6y sai v6 hie; ;; inu auo. " khi thay d6i c? '4" D6n girl tri md hi6u di€n th6 hiQLr durig tr€n tu di€n dar gi6 tri cuc dai thi mgch diQn c6 tinh dung kh6ng. B' Gie fti cuc d4i cira hiQu diQn tho hieu dr-rng tr6n tu C daiduoc nh6 hon hogc bing gi6 tri hi€u cl'ng cria hi€u diOn tht5 tr€n hai dAu mach di6n. - C' Khi xay ra c6ng hu6ng thi hi6u di€n thd tr€n tu di€n sd vu6ng pha so v6,i hi€u di€n th6 tr6n hai dAu mach diQn. D' V6'i gi6 tri cira C ldLm cho c6ns suiLt tidu thu trdn cuQn dAy dat cuc dai thi ddng di€n trong mpch s6 cirng pha so vO'i tiigu diQn th6 tr€n hai dAu"mach di€n. C6u 16: MOt nhd m6y ph6t di6n ph6t ra mQt cdng su6t di6n kh6ng d6i la t00Mw. N6u n6ng di€n 6p dAu cludrrg ddv truv€n t6i l6n 11OkV tni nieu su6ttruyAn tii crtra dud.ng d-ey td 80%. H6i hd;;;;?ra;'rtb;; bao nhi6u n6u dipn 6p dAu ngudn duo-c nAng ae" iZa|il A.2o%. B. 8o%. c. go%. D. 9s%. CAu 17: oO thi su phu thu6c cria li d6 dao d6ng cira vdt theo tho'i gian cho tr€n hinh v6. 6 4 2 0 -) -4 -6 Fhuong trinh ndo sau dAy, v6'i t tinh bing s, bi6Lr diSn tOt nhAt dao dQng cira vflt? A. x= 4cosQ.\n.t+rl6) @m1. B. x=+cos(lTr.t-rc16) {cnl C. x= 4cos(on.t + n l3) knl. D. x : 4cos(20n.t + n I 3) lcnt). Cf;u 18: MQt mpch diQn kh6ng phAn nh6nh g6rn m6t cuQn thuAn cim L, m6t t9 diQn C vd mQt bi6n tro'R dugc rnic vdo m$t hiqu di€n th6 xoay chidu u:220J7 tin i00n t (V). Hoi khithay AOt gla tli cfra R tlii higu di6n th5 tr€n R thay d6i theo dd thi ndo sau? Rc. CAu 19: Phuong trinh s6ng truydn tr€n mQt s-oi dAy thing: z = 4 cos(40 7t - nTd l2) mm, trong do t tfnh bing giAy, d tinh theo cm. Khing dfnh nAo sau vd cdc d4i luong dflc trung cria s6ng ndLy ld dirng. A B. A. Van tdc truyAn s6ng bing 80 cmis. C. Bu6'c s6ng 1A 2 cin. D. B. Bi0n ciQ cria s6ng Id 4 cm. D. Tin s6 cria s6ng bing 4An Llz. Ciu 20: Hai khe Y-Ang c6ch nhau 0,5 mm duo. c chi6u s6ng b6{ mQt bftc xp don sic budc s6ng ?". TrOn min dAt c6ch hai khe tren 1 m thu duo. c mQt he vAn giao thoa d5i xirng. Vi tri ctra hai vAn t6i thfi 3 6' hai phia ciia vAn trung tim c6ch nhau mQt khoAng bing 6,3mrn. Bu6'c s6ng cira bfic xa don sbc ndy ld: A. ?'" = 0,525 pm. B. ),:0,9 pm C. i":0,45 pin D. l": 0,63 pLm. Ciu 2L: Tim k6t dirng? A. Khi di qua cirng mQt l[ng kinh, g6c lQch cqc tiOu cfa tia s6ng vdng lon ]-ron g6c t€ch cgc ti6u cira tia s6ng do. B. M6i 6nh sdng don sic c6 mQt mdu nh6t dinh vd kh6ng bi lqch dudng khi di qua ldng kinh. C. Anh s6ng tring ld t6ng ho.p b6y mdLu sic do, da cam, vdng, lpc, lam, chirm, tim' D. Nhfi'ng mdng bong b6ng xd phdng c6 mdu sic sdc s6' ld do hiQn tuo.ng t6n sic 6nh s5ng. Cdg22: Tim k€t 1u0n sai khi n6ive dao dQng diAu hod cria mQt chAt di€m tr€n mQt doan thing ndo d6. A. Trong m5i chu k! dao dQng thi thd'i gian tdc d0 crira vft giAm dAn bing mQt nira chu k1i dao dQng. B. Lsc hOi phpc (ho.p lsc t6c dpng vdo v4t) c6 dQ l6n tdng dAn khi t6c dQ cfra vft gi6m dAn. C. Trong rnQt chu k! dao dQng c6 2 lAn dQng ndng bing mQt nfia co ndng dao dQng' D. T6c d6 cira v6t gi6rn dan khi vat chuy6n dQng tu vi tri can b5.ng ra phia bi6n. C.Au 23: MQt m6y bi6n th€ l;i tu6ng c6.400 vdng 6' cuQn.so' cAp vd 800 vdng 6' cuQn thri' cAp. N6u ngudn cung cAp cho cuQn so cAp h 20W thi c6ng suAt tr6n cuQn thrlcAp sd li: A. 20. w. B. 10. W. c. 160 w. D.80. W. C6u 24: Tr€n m4t nu6'c c6 hai mfri nhgn dao dQng t4o thdnh hai ngudn s6ng kiit ho.p cirng pha nhar-r. S6ng lan truydn tr01 rnflt nu6c v6'i bLr6'c s6ng ]'": 2 cm. Hai di€rn M vd N nim tr6n m[t nu6'c vd c6ch hai ngu6ri tr6n nhirng khoing bing M(12cm,15cmfvd N(12cn-r,16cm)' Sau khi da 6n dinh: .t. Oi6ro M ve N nim tr6n hai gol lSrn li6n tii5p. B. Di6m M nirn tr6n go-n l6i, N nirn trdn go. n l6m. C. Di€m M vd N nim tr6n hai ggn 16i li6n ti€p. D. Di6m M nim tr€n gorr l6m, N nim tr€n go. n 16r. Ciu 25: Tim nhfn dinh h-op l! nhAt v6 quang ph6 cira c6c lo4i ngudn s6ng: .A. Khdng th€ dirng quuttg ptrO ti0n tUc d6 nh{n bit5t duo. c thdnh phAn c6u tpo nhung c6 th6 thr-r nhfn duoc ,;. nnl9t dq cua nguon sang. B. Ph6p phdn tich quung ph6 v4ch phdt x4 c.ira lgll6.n sang kh6ng chi giirp ta chi ra c6c thinh phAn cALr tao cira ngudn s6ng md cdn c6 th€ nhAn bi€t duo. c thdnh phAn phAn tram cita cdc chAt trong.ngu6n. C. Neu ta ctrOng quang pli6 vpch ph6t x4 cira mQt d6rn hoi n6ng s6ng vd'i qr-rang phd vgch hAp thy cira d6m ho"i d6 thi ta c6 tfr€lnu du:o. i rnQt d6i quang pti6 ticn tpc hodn hAo. D. Ce ba k6t lufln tr6n d€u dirng. 10-4 _ ., Cdu 26: D4t vio hai bAn ti.r diQn c6 dign duns C = F m6t hi6u diQn th6 xoay chi6u thi dong diQn qua tg "3r , ,.A 'l:l dien co bi6uthuc: r:Z^12 cos(100 nI+ 7 XA). HiQu di6n th€ ddtveo le : J V'",PAA-'- .r-iL A. u= 60042 cos(l00zt- ;)tV). J B. u : 2oo ^[tcos(too, t * l)fvl -o C. u: 2o0Jtcos(1oo "t- [Xr> D. u = 600Jtcos(1oo ftt+:)U) Ciu27: K6t luan nio sau day sai khin6i d6n d6c ditim cria s6ng di6n rir.: A. S6ng ddi trong d6i s6ng vd tuy6n diQn til truyAn tdt duo-c trong nu6'c vd c6 t6c d6 truydn bing t6c dQ cira 6nh s6ng nhin th6y duo-c trong nu6'c. B. C6 tdc dQ l6n nh6t khitrul,An trong chAn kh6ng, bbng t6c d0 6nh s6ng truyAn fi.ong chAn kh6ng. C. LA mOt s6ng ngang v6i cA.liai thdnh phAn diQn trudng vd til trudng, d6ng rhd'i nai inann pnAn Jign trudng vd tir trubng bi€n thi€n dOng pha v6'i nhau. D. C6 tAn s6 khdng thay d6i khi truy€n tir.khdng khi vdo trong nu,6c. Ciu 28: Treo mdt vdt m vdo dAu cira mQt chi6c ld xo thi vdt m dao ddng v6.i chu k1) 4 s. Cht lo xo thdnh hai phAn bing nhau rdi ghep chring song song v6i nhau sau d6 m6'i treo vdt m. ChLr kj, dao dQng cira vAt m ld.: A"8s. B. 2^[i s. D.2 s. CAu 29: Hi6u di6n th6 tr€n tu di€n vd ctrdng clQ dong diQn trong m4ch diQn cira khung dao d6ng LC c6 bi6Lr thf'ctuongirngld: u = 2.cos(10u, (V) vd i : 4.cos(106r +nl2) (mA).HQsdtucAmLvddi€ndLrngcira tp diQn trong khung: A. L : 0,5 pH vdC:2 p,F. C. L:5 mH vA C:0.2 nF. A. ua s6m phanl4 so v6'iuy. C. ux s6m pha3n/4 so v6'i ny. C. 1s. B. L:0,5 mH vd C:2 nF. D. L = 2 mH vd C:0,5 nF. B. ux tr6 phanl4 so v6'i uy. D. uy tr6 phax/2 so v61 uy. CAu 30: MQt rnSch di€n xoay chi€u gdm hai phAn tir X vd Y mic nOl titip nhau. Hi6u diQn th6 ux tr€n phAn tiL X vd hi6u diQn th6 uytrdn phAn til Y phrl thuQc thoi gian nhu d6 thi hinh v6. /! r Nhdn xdt ndo sau dAy vd sU lOch pha gi&a uy vA uy ld ho.p lil' nhAt? l<o .<C) J C) l.i F Cffu 31: MQt vft dOng di€Lr hod v6i bi6n dd bing 6cm. VAn t6c vet khi pha cira dao ddng lit nl6 lit 60crn/s. Chu kj'cira dao dQng ndy ld: A. 0,314s. 8.3,18s. C. 0,543s. D.20s. C6u 32: Kho6ng thd'i gian ngin nhAt md m6t vdt dao dQng didu hod v6'i chr-r k!'T, bi€n dQ A thLrc hiQn khi di ehuy6n gita hai vi tri c6 li d6 x' : Al2 vit xz: rll A I 2 lit: .E-r c. "" ' .7. D. 2 Ciu 33: MOt mach dao ddng diQn tri LC gdm rnQt tr,r C : I nF mie v6'i mgt cu6n dAy nho c6 d6 tLr cAm bing L : 10 pH. Do c6 eliQn tr6'tr€n dAy n6i v2, cuQn cim v6i gi6 tri t6ng cQng bing r: 0,2 f) n6n dao dong dign ti' c'ria mach ld tit dAn. o€ duy tri dao dQng cria rnach v6'i Uicn Aq "ila nier?ien ii-,6 tren ttr C dr"Lo-c auv ir-iiini uo = 0,4 V tlii ngud'i ta phAi c6p ndng,lu'alg cho rnach v6i c6ng suAt trung binh P bing bao nhieu? eict ring Eian tro'r khdng ldm thay ddi d6ng k€ d6n tAn s6 dao ddng cfra mach. ^T dr- 6 l CU^2 A. p = =*." =1,6.10 6W . 2L U2 C,P="0 -0,8W. r B. p= +r=3,2.t0-6w. D. P= #=a,4w . T t2 B.r 8 Trsc bi6u di6n thd'i gian (t) Cdu 34: Trong mQt thf lehiQm vd giao thoa 6nh s6ng bdng hai khe I 6ng, khoAng c6ch gi.lla2 khe a: 1 mm. Khoing cdch tir'2 khe d6n min D: 1 m. Ngud'i ta do duo.c kho6ng cdch giira 6 vdn s6ng 1i6n ti6p ld 3 mm. Bu6'c sdng cira 6nh s6ng dor.r sic trong thf nghidm ld: A.0,65pm. B.0,7pm C.0,5pm. D.0,6pm. CAu 35:"MOt vat c6 kh6i hLo-ng T: lkg duo.'c treo vio dAu.cfra ld xo c6 do cirng le k.: 100NAn. K6o.vAt xuting thing dring khoi vi trf can bing mgt do4n bing 10crn r6i truyAn cho v{t mQt v4n t6c lrn/s hLr6'ng vd vi tri cdn bing. Tinh dQng ndng cr-rc dai cia vAt trong quf tlinh dao dOng diALr hoa? A. 1J. 8.2,5J. c. 1,5J. D.0,5J. C6u 36: Mirc cudng dd 6m o'hai vitri A vd B tuong irng ld 40dB vd 60d8. Cudlg d0 Am 6'B l6n hon 6 A: A.9l4lan. ts. 1,5 lAn. C.20lAn. D. 10014n. Cflu 37: MQt so.'i ddy thing c6 s6ng ngang truy6n qua theo chi€u ttr tr6i sang phAi. Vdo m6t tho'i di6m ridLo d6, hinh 6nh chgp duo. c cira so. i dAy c6 d4ng nhu hinh v6. Hu6ng di chuy€n cira di6m N sE ld hu6ng nAo? Ciu 38: M6t vAt dao dQng diAu hod v6i chu ky 0,2s, bi€n dQ 1Ocm vd c6 d6ng ndng cqc dai ld 0,5J. Tim krlt lufn sai? A. DQng ndng cria vflt tbng dAn khi vflt ti6n vA vi tri c6n bing. B. Trong m5i chu k! dao dQng c6 2 lAn vat dat dQng n6ng bing 0,5 J. C. DQng ndng ctra v4t biiin thi6n tuAn hodLn v6i chu ky 0,1 s. D. Khi vAt di qua vi trf c6 li dQ bing 5 cm thi ilQng ndng cfra vdt bing mQt nira dQng ndng cr,r'c d4i. CAu 39: Di6n trudng xo6y kh6ng c6 tinh chAt ndo sau dAy? A. C6 c6c dudng sric ld c6c dudng cong khdp kin. B. Sinh c6ng kh6ng php thudc ducrng di md chi phu thu6c di€m dAu di6m cu6i. C. Pheit6n tai ddng thd'i v6.i rnQt tri truong bi6n thi€n. D. XuAt hiQn khi c6 mQt diQn tfch dao ddng didu hod. CAu 40: Ngo4i lpc tuAn hodn c6 tAn sd f t6c dpng vdo mQt hO dao dQng c6 tAn s6 ri€ng fo (f < fo).Ph6t bi6u ndo sau dAy ld dirng khi tl6 c6 dao dQng 6n dinh? A. Bi6n d0 dao clQng cua h€ chi phu thudc vdo tAn sO t, mOng phu thr-rdc bi€n dd c[ra ngo4i lgc. B. V6'i cirng biOn dQ cria ngo4i lgc ve f1 < f2 < f0 thi khi f : fr bi€n d6 dao d6ng cria h0 s0 nho hon khi f : f). C. Chu kj' dao dQng ctra hQ nh6 hon chu kj' dao d$ng ri6ng. D. T6n s6 dao dQng cira hQ c6 gi6 tri nirn trong khc,6ng ttl f d6n f6. C,6u 41: Dpng cp do khdi lugng trong rnQt con tAu vfi tru c6 cAu t4o gdm rnQt chi6c ghe c6 khOi iuo-n-e m duo. c gbn vdo ddu cira mQt chi€c ld xo c6 dQ cirng k:480 N/m. D0 do khdi luo'ng cira nhd du hdnh thi nhd du hdnh ) . , x ; phii ng6i vAo ghd r6i cho clii€c gh6 dao dQng. Chu k! dao ddng do dLro'c cira gh6 khi kh6ng c6 ngr-roi lA To: 1 ,0 s cdn khi c6 nhd du hinh ld T : 2,5s. Ldy x2 : 10. KhOi luorrg nhd du hdnh: 4.27 kg. B. 63 kg. C. 75 kg. D. 12 kg. Cdu 42: Ddy birc xa nAo sau dAy trong thang s6ng diQn tir dd dLro. c sip x6p theo thfi tu tdng dAn cira tAn s5? A, tia tir ngopi 6nh silng nhin thAy dr,ro, c - tia hdng ngoai. B. S6ng ngfn - 6nh s6ng nhin thAy duo'c - tia X. C. S6ng trung - tia tri ngo4i - s6ng ngin. D. S6ng ddi * tia X - 6nh s6ng nhin fliAy dugc. Ciu 43: MQt ddn neon sC duo-c bAt sang n6u ch€nh l6ch diOn th6 tr€n hai dAu ddn l6n [ro'n ho{c bing 14lV. Khi ddn ndy dugc mic vdo m6t hi€u diQn th6 xoay chiiiu u :200 sin 100nt (V) thi trong rnQt thoi gian dir ddi, c6 bao nhi6u phAn trdm thd'i gian ddn phdt s6ng? A.12,50 E, 50% c.75% D.2s% Cdu 44: MQt vflt c6 khdi lugng m: 1,0 kg duoc treo vdo dAu cria lo xo c6 dQ cirng k = i00 N/m r6i cho vAt dao dQng diOu hod tlieo phuo-ng thing dilng v6'i biOn dd bing 5 cnr. Luc md Io xo t6i dqng vdo di6m fteo ld xo c6 gi6 tri l6'n nhdt vd nh6 nhdt bdng: D. 15Nvd5N. A. 15 N vdL 10 N. B.5NvA0N. C. 10Nvi0N. \A JAA ':^ Ciu 45: Khi c6 dao d6ng di6n tir v6'i chLr ky bii5n thi€n ndng lu-ong di6n trLLd.ng trong tu di6n ld T cira mach dao d6ng LC thi cudrig dQ dong di6ri cuc dai chay qira cuQn "a* uing Is. Ei6nli.h "r-r" dai tr€n m6t b6n cuc cta tu di6n c6 giri tri ld: A.qo=+ +77 E.qr=+ c.qo='? /.lr D. qo =I!-e- 7T Ciu 46: MQt do4n mach g6m cu6n d6y c6 di€n trd thuAn r = 100.6 (o), c6 d6 tu c6p t- nOi ti6p v6j tu di6n c6 di€n dung c = 5.10-s t n(r). Dat vdo hai dau doan mach mot hi6u di6n rh6 xoay chidu u-tJosin(tOOnt-7T14)(V) thi bi6u thirc cudng d6 ddng di€n tiLc tho'i qua m4ch i =J2sin (tOOnt-nttZ)(e). X6c dinh L. A" z=0,6tn(H). B. r = o,stn.(H). C. L=U n (n). D. L=o,4tn(H) Ciu 47: CtrAt Oiem chuy6n d6ng trOn drrong thing Ox. Phuong trinh chuy6n d6ng crla ch6t di6rn ld: x=10cos(1Ont-ntA) cm(t: tinhbdngs) vdothd'idiemtrvatdi quavitric6toad65crnva.theochiauam 1 cua truc toa d6 thi d6n tho'i dii5m tz = tr* * r vAt s€ d6n vitrf co li d6 x2 nAo? CAu 50: MOt thf nghiQm Y-Ang duo-c ti6n hdnh ddng thd'i v6i hai 6nh s6ng don sic c6 bu6,c s6ng 1"1 :0,4gpm vd 1"2: A,64pm. KhoAng c6ch gifr'a hai khe s6ng ld 1mm, khoAngc6ch tt hai khe s6ng dOn mdn quans6t ld 1,5m. Giao thoa duo.'c quan s6t tr6n rn6t virng r6ng 2cm d6i xri'ng vd hai phia cta vdn tring tAm. Tinh s6 vi tri c6 sg trirng nhau cira c6c vAn s6ng. A.xz:-5cm. B. ,r= i0cm." C. x2= 0. D. xt= 5JJ cm. lil 48.tS^iy.ne:tc:. c6ng su6t ph6t 6m cira m6t chi6c loa nhLmg t6ng dAn tAn s6 cta 6m thanh md miiy phrit ra tt tdn sO 50 Hz cl€n khoing 20 k[z. Nhirng ngud'i c6 thfnh gi6c binh thudng s6 nghe duo. c Am v6.i c6m girlc: A. to dAn rOi tai nh6 dAn. B. c6 d0 to nh6 f<frJng AOi. C. to dAn. D. nh6 dAn. e -' ' Ciu 49: Mdt khung ddy g6m c6 100 vdng dAy, m5i vdng c6 diQn tich s = 200 cm2 duo-c cho quay d€u v6.i t6c dd 15 vdng/s trong mOt.tir trub'ng cldu. Tu thdng cuc dai qua m5i mgt vdng dAy cira khung kni thung quay lit2 mwb. su6t di6n dQng hiQu dpng xLrAt hion tr6' hai'dA''khung d6y bing: o - J - '-' 4.2,12V. B. 18.8 V. c. 13,3 V. D. 188 mV. A.6 B. 13. C.9. HET D.7. Fr1.ri FXQC QLOC CIA l{A tl-OI '['rru{iNC 'Ft{I'T CX{UYI]N [<[-[ ! :{ FILTOT.IC patq rma x.oT t\4(}'t'so c,iti KHo t-F{ot{G DE Kltrh.{ T.FL/" Knlr}-i'f}[uc'x'Hi DAn Hoc ?0lx-{,,\M n,roN rr,l'r LY DA fi0n c'lto ctic hr.;c sinh tru c:ritt, hu'6ng diin trd ld'i du6'i i1y sd t{uq'c trinh hiv thea f hil'tt1': Duo rlQng ) Sdng co' ) Dso ttpng & Sdng di(n tt)' ) Ding di6n xouy chiiu ) Sirtg tirrh sting. ::o0o:: Cf;u I: C/rrir tlitut ,:lttr.ritt tl<)rt.q tr<itt ,furong tltin,q O.r. Plttnrttg ttinh tlttt.t',;rt done t.Iin t,lt,it tlitjn l,); x = l0cos(102,r - r /6) t:nt (i: tinh hing .s). l/io thd'i itiim t1 vit tii tltrtt t'i tt'i ci tott titj 5 ctn vir thut cltiit.t 6nr t:ittr tt'trc tou do tlt) ilin thd'i iritn 1- = ,. *!., r,it st'tl\n t,i tt'i crj ' 3t) li ,lo .r , nio? , t ^ I r^ ,i . Gi6i: Sil duug rn6i lidn hf giua dao dQng di0u hoir vi chuyOn ddng trcn deu T'ai thdi di6rn f1, r,At & li dO cri g6c pha hrong rirrg lit r /3. Sau d6 Ar = {., g6c pha ting th0m nr6t truolg o-30 La = co.Lt :10n = E l3 . Gic pha I[c n]rv h 2n I 3 . VA5': r.1 : - 5 cirr 30 r'i tt'i t'i li tlo t, = i,l rt) .r': : ,l1l tZ .' Giai: thr)i gian ngdn nhit vat di chu5,dn tr)'r'! tri c6 li dQ x1 d6n v! h"f Ii dd x2 [d tirdi giau di clruydn tryc ti6p, thing ttl,r,! ni xr d6n r'! trf x2. Dga viro rn5i li0n h0 v6i clru5'6n ddng trdn d6u (r€ !rinh), g6e pha tha1, ftiii zuo:rg ring tu' - n l3 dfn - tr I 6.Ttrray d6i mQt luqrg lir n I 6 tuung frrg v6'i thoi gan T 112. Ciu 3: Dri llti sr.r phy Ihu6c ttitt li do tlao d6ttg r:t1u vit lheo lhd'i gian t'hrs rrtn hirth vd. Phwng trinh nio suu ti[\,, ttii t tinh bting .r, bir't, diin t6t nhiit tlao i6ng uirt t'il'.) Gini: Tt'd0 thi ta ft6y: .d =4cnr T' = 2s . T+rt = S vAt c6 x0 = 2cm vir tii theo chiAu irn (dd fti di xu5ng, cd Ii dQ ginm dAn). T'&'dd suy ra phuorrg trinh dao {IQng: .r = 4cos(I0a.t + r I 3) tcni. C.&v4: Dqlng u.r tlo lthii luong trutng,rndt ton liitt t'Ji lnr t6 t:tiu lno g6m nt)t thiit ghi ci itltdi lmng t,t i[mlt gt'in vir: tliu cilrL ntit thi(t li ro td iQ u'ntg,k 4l]0 Nittt Di: dct llroi ltrottg cuu nhd du hitth tlti tiltd tlrr hanh phrii ttgr)i vito ghi fii r:ho t:hiic ghi tluo titing. Chu lr.i'cluo {fong do tilroc t:tiu ghi khi l;hong co ngtrd'i li Tr: 1,0 s cdri n : 10. Iihtii tuong nhi rltt hdnh? Giii: ,. =), Ei. , -r- @ - 12 -rz t -2 ttt /t(7t - -'\ -u -"\t"-o'l k -' -''i=4r'!="'=W=63(tS)' C.i'u5: A4ot t'itt tti khcti lLrong m : 1.0 kg dLroc ireo t'irc cliiu uia li xo co do cLnts k i00 Ntn n)i clto t,it dno tlt)ng t'liiu nhtit bii.ng? CiAi: O VTCts !d xo d5n 1 0crrr tr(}ri dao dQng v6i bi6n itQ 5crn, tlQ dan ctia ld xo thay d6i tr'r scrn d6n 15cm tuong *lg v6i h.rc dirn trdi lcung chlnh li. luc tic dgng vao di6m heo) thay ti6i ftong kho:ing tir'5N tt6n 15N. ,'ii ghi7, thirng song.s<tng vt5'i nha.rr.sultdo nuj'i Lt't'r't vtit nt. ChLt ki, tluo ding t'tru ttil n? Gi6i: Lo xo bi cit thirnh hai phan plng nhau thi tnt'thanh 2 Id xo vdi ti$ cring fing gdp 2. Gh6p song song hai ld xo tluq'c ld xo tuong eluong cri dQ cring blng tdng cIQ cung ciia hai ld. Ic, = k, = Zko; k = p., * lc, =.4iro. Chu lrj, dao dQng: f = zn.ly = 2ft -ljll = & : Z(r). V/i !4/ro 2 \' dui ttiu vdt txtng tlttu tt'inh duo dong_ditu hdu.? Girii: EQng ning cgc il4i chinh bing co'nftrg dao dQng khi chgn nr6c th0 ning pflp t?i VTCB. r.t. VflJ (\\to),n". = E = i,,r',,^t + j/, r ,,t ='F,J . 22 CiuS: Mot t'dt chiu don.q thdi hai ldc nhdn kich rhit:h dtto ctpng vo'i <':tit clao donr ritng 1th,in rni htti ttit: durtg ti.v gti.y ru tltit Giii:xr=3cos(l0nt-n/6)cmvix:=5sin(l0nt)=5cos(l()nt-n/2)cmbiiiuth! haidaotl6ngdi6uhoirlQchphanl3. T6ng hqp hai dao tlQng didu hon crlng phuung cring tin s6 sE Ii dao tlQng didu hoi cring phuorrg cirng tin s6 vo'i hai dao dQng d6 vir c6 biOn dil A = ^l .A,' * ,li + zAtA, eos Ltp = 7(srt). THPT ChnAn KHTN Trang l/3 - Hu'crng cldn giiti thi tlni DH20I l-lan 2 - Irdt ll lliaotrtt-Khtirtgdinhrrito.strrt ritat, ,/tti /rr,.rrtgttrictt.rtgctitt.sr5rtiEnit.t, ldtltitt,q. Cidi: 1, = 4cas\4&.n - irt.l /L)Q,ttt\ = A,rttrt* .oo[r, x 20 x r - rr r 4)= n "uf 2n t .1 x t - Ztr v.4'] . r,i ao ' 4, I -" )) .4. Ei0n d6 ctir s6ng lir.4 nrm (,/. Acnt \. C. V{n t6c truydn sting bing 80 crr/s. E. Ilusic sring Ii 4 crn(+ Zcnt) D. 'I?n sii cria s6ng lrlng 20 Etz (+ 48r- EIz) 2J2 < h{l{ < ?. = 'I'rong ldioing gifra M vir N c6 m6t vi chi mdt di6rn dao d6ng nguuc pha r,6i M. CAu 1 i: Alot .s.oi dtl, rlttins ct5 ,16ng ngang trul,in cltra thco chiiu tti. :rtii ,tttng 1.thdi. l/ito mt)t thoi t'{i€ru nio ti6, hinli"Linh chLtp thrc c citu .r(ri tltit t,t tlurt,q tthtr ltirth ve. Httttn,: cli thLltitt ct,tr tliirtt .\'.li /ri Ittritt! tiaoi Gi6i: Dudng drit n6t bi6u tlii hinh inh cfia div sau mQt khod,ng thdi gian ngin truvdn s6ng (thntr sring bi dictr chuyGn r,0 phiaphnil huurrg truydn s6ng). FXinh. drrh nirS'cho thAy rd N dang chu5,6n ildrig theo hu6ng (D). tfdi tiin .sd rung t'it giir ttgu.t,An ltrt c.ting tld.t, thi tiir.t -to rtlro nhit.t.o'tltd r,.ttt sjrt.g tlintg tt 0n 1it.t,it); Gi:ii: Vrii ltrc cing diy kh0ng d6i, vam tdc trurvdn s6ng khdng ddi. Ee c6 s6ng dilng r,6i li lxi s6ng tan s6 s6ng lit f, .Ta, co L,=l;.)12=k \ =- / = t,)-=l. t - t . Z]JH:. )t /tt-t\ 2L-''''*i,, /irrip ,J 1, l-l: tldn khorittg 20 l;it;. Nhiing ngrriico ihitit g'itit: binlt rlttrdttqsd ygite tlLrc't tint v6.i ctittt gitit; Giii: Tai nguti binh thudng sE cdtn nbin t6t im thanlr critin sii trong kho:ing rir ikF{z-ddn 5kFIz vi kdm nh41.66i vdi lT:l$n.:q!i":f ,1:d,"ld.lc3i qu:6 r6n. Lio va5, o6o gidc rnir rai nghe d"''* r-r,tili;;r ,a;5;;i;;; ^* o?'- *ip ,ia- htn se li {o din rOi lri uho din, lit: u - 2.eas(10('t1 7Ir) vi i = 4.cos(tr061 +rl2)(tnA).H4sotrrcuntLt;t)tliittrltttrgttiurt.r iiitlntrottgkhrtrtg; Gidi: q =qu.cas(r't); i=q'=at.qo.cos(rot +rl2)=as.Cl),,.cos(ar+rr2) =rg=*!u-=1+f = 2Ja.'F=2nr;. ro.[J n t 06.2 ,,! , Urtu l5: Kit luritr ,tui klti ndi ddn dtic dietn cuo .sottg diin ti.; t,ly1y !r|'c .tt ottg nrrdt' ) sai vi cdc s6rtg dign tu cti tAn.s{i kh6c nirau c6 tiic d6 tnuvdn trong c:ic iloi o"*,g li klrric nhau 1tli6u rdy tgo ra sU'lin sic 6uh s6ng uhu'ctrrring ta da bi6t hrong ph6n tintr ctr6t s6ng 6nh s6,g). Gini: EQ lQch pha dao d6ng cria 2 di6m h€n ctng m6r phuo.ng huy6n sring lit Ap = Zrcl / ,1. Nhirng di6m dao ti6ng vu6ng pha cdch nhau: d = lt,l l2 + A I 4 Ti'dA bni su)/ m, P lir rli6m gAn F{ nh't dao dong \,u6ng pha v6i M :+ N{p : }J4; cdn N ti di6rn k6 ti6p nan [4N = )J2+il4 : 3N4 => p vir N dao dQng nguo'c pha nhau. Cdu 16: !140t din nertn sd du'o'c. hQt sltttg.n1tr r:h[nh ]6ch tlian the tr\n hai tlitr din lotr irott hodc hirtg /411,. !.;hi 6in ni^ thror ni^c t'tio,ntdl-hihr tliln rhi rout,.t'hliu u :200.tirt 100/rt (trt) thi trong nttir rlti.i giurt 6t) tliri, c:ti hito nhihr phtin trdm rhoi gian tlin phit .tung? . Gini: Chri f rnng lal = 20l,.J, l2 =.2}I-cas(tr / 4). trDng rni ddn srlng khi ptra cria hiQu ilifn th5 c6 gtic pha tuong ring nim trong. midn dugc gach eh6o tr€n lrinh N{iArinAS,cnliirn Z duing trdn tuong 6ng vdi 50%thdi gian phdt s:furg. Ciu l7: A4it nttrh clao dQng tlien tirLC,ginr m6/ lu C = t ttF ntit rtii rttir t.trtjrt tlti.t,nht) c6 t.fu) ru. t:ci.m hing L = 10 pl{. Do co cli(.r.t.tri'tt'irt dtit,n.,ii ta tudn tutrt nji giti tt.i i,ing tpyg hing," = i : il l;hong ltim thav rloi ddng ka den nn so clao tt6ngT,titt ntctclt. . Giii: Ddng tli$n hong khung dao dQng ln ddng cti€n bi6n thi€n tliiu hda hinh. sin gi6ng nhu, ddng xoay chidu. viy c6ng suat tda nldQt hao phi tr€n ciiQn tni r, cftng clfnh Id c6ng suAt cin bri rluqc tinh bang: P=l'.t't'' 1' ' I = i, i, - |@.il' ., = ! a= ( C.U n ), ., = I#.r= .r,,,. = :c u;.,. - t.6.r0-(, t4t C6uIB: A.lotmttchdienroa.ychiiukhongphtinnhtinhgintntotcuonclil.cottd.sotu.itntL,di6ntrothuanRvLitnottudi\tr l;hing dt|il Kit ltritt trio ,saLr dd.v stti t.'i ltiJtt ttrrttt.g rhtt tltrtt, klti rhrt.v tloi (') Giii: IIuri'ng hrydn s6ng f- THPT ChqtAn KHTN Trang 2/3 - Huong din gidi thi rhti DH20I I -tin 2 - Irdt h) I \' I oc) ,R 7 L L] (D. .'I h tt'? R? hing ro2. Trr c'it qtrttn fili, utdl, P:t- t?= ^l -r I ^z U .2,_. tJ Td| dir: (u, ),,,,, +r Z, == l_:t_ : 7- , , !L_ 2 y ,. L',. - l.Z, ln' - \z -2,.)' in=' t,_._t.2,, +t l-r,' + X-iic niry rirach c6 t(nh durg !;hdng vri fU, 1,,",. = f* ii., ,, ti ir\n htri dliu rtttlth ditn. ) Sai. ltiitr rlidn titi tt'dn htti tltiu ntt.tth diin. I Erir,rg, r'i hic niry rnach xiy ra c0n1ftu61S, .l Itiitt tliirt ilti rout,cltiitr tr : 220Jt .vin l0l)nt (li). Hoi kli tltu.t'tl6i gtti rt'i tila ll tlti hiAtt ditin ihc lt'An R rltat, loi tltco tto llti nuo satr'.) Gi:ii:, U.R Ll I.L ,l lp2.tz z \2 I tt -' r: V,. \-t. uar ,1_:.r-LCl- X' R: Up ld hlm dmr di{u gi:im vi tiQm c{n diln gir{ q U }dd R -+ co ' Ciu20: A4Qt nta,:fi[fifulJtdlgphrinrthiuiltRL(-'tlu'oz, rn,ict'ittrn.t)rhiittdit;.n,rr.rnn.r'thiitt tt,=Uo cos(arf ) vfi {1,1 l;itt)ng P,= P=-[c r-#J' =b=, +r)' -1'u, +o')r=J; +;l -t'rr't'r' = r/{r-C) =l r'r,,., tfut)L: tlLItTg tl(11 -ttJLl ! clal: "t+6u diQn {p cluo.c n6ng i6n gip ddi, mir F = U.I + cud'ng dQ ddng diQn giim di 2 tAn' ttrao phi diQn nrng c6 cdng suit F5,,u n;,i: f .R se gi5m di 4 !in, f"rc riiu hao plri iO'htttosau hao phi li 5%= hi6u suAtrn6i ligiys . ,: dtrng .tttAt hitn trtn hui ditr |tlttrttg ddt'bring; cibit fi=l/BS.cos(2 tr f .t) =,:=-d'=a-NBS'sin(otr)+ €,,o=g#^='o'P'=13,30/)' - 11 ^11 vt v: Cdu 23: lv'iq)t nrrlt'h. ilitn xtttr.l' ,,hiitr gitn ltai p.hin tr. X t'it )' ntdt' ndi tiip nlrntr. Lii6tt'dien thi tr.r't,'An p,hin ri it'ir hi(u tliQn thi.uvu'€il 1t.h^di1 ti Y phtr thut)c: tht)'i gian nhtr iti lltt hinh t'd Nhitn 'tdt ndo suu dd.t'v€ sr l1ch pha giint ; rr.\ \)it u1. Iit ho;p l.i sfi7i17 _ t 'E Giii: Ffinil vE cho fh6y mQt chu k} ctia hiQu tti0n th6 tuo'ng irng r'6i 4 'ti khodrng lin (16 khoring nh.t). "* Aat gle tri blng 0 vn dang ting l6n rnuQn hon ? ur, ,"ri-qt khoing mJt gian tuoog,i"g v6i 2 l*roring cSia nhti, tut tri sau 1/8 E cnu kv. VOy ux tr6 pha d4 so voi u1'. Ciu 24: IIai lihe laAng cach rrhcrr.r 0,5 rtrrr ttr.r'qt't chiiu sang ltrii nt,t Lttit.xtt 3 ti.hui phitt ctitt t,6n lp.tn! tim cdch nhrru nt6t lfioang bitng 6,3mnt. Btrrit: sdng cilu ltti'c xtl tlotr sdt: ttiv ld: - Ciai, vi ,tf t,a" rAf rfri : f.a tti'hung tAm crich nan t-*g ta* m6t khoiing l,S;. nan khoing cich gifra hai vin t6i thft 3 ti 7j = 6,3mrn + i:0.9mm :+ l' = 0,45 Pm. CAu 25: lvl6t thi nghiirn )'ing dro'c: tidn hinh tlong rh6'i t'6i ltcti imh sung clon .vdc: cd htri't"st)rtg 21 : 0'18lon va )2: Giii: Khoing vin d5i r'6i hai brir x4: 11 = 0.72mm; i2 = 0,96mm = 4itl3. + clc vi trf tdr.ng nhau cria cdc'r'in sdng lh x = k.4\=k.3iz=2,88h(ntrn) vii k eZ - V! hi fting nhau tl€n virng quan sdt giao thoa thoi rndn: I x l< I l2 > 2,881k l< 10 =l k l< 3 ' Vfy c6 2x3=1 = 7 vi trf hirng nhau ciia cic uAn tT: _ I{ET'___-__ Truc bi6u di 6n thdi gian (t) T"ang 3/3 - Htrcng din gidi thi tlutr DH20l I-ldn 2 - I/At l)' THPT Chm,6n KHTN DAr F{o{l erJoc G{A. [{A Nof t-}A.ir A.ht i.J,[i fl.iEiW T:]RA. [d[XiI\i -f!{{J'C'ilFfn i],.d} [{OC )-rit-r-LAN 2 T'nu'o'Nq; x'Idp'I' cFxtivfiru t<r-lrx +rAp Aru.rRAc t"crflcft,I ti'lon vAr r,v Ma de 570 cAu DAP AN 1 D 2 B J D 4 D ( o B 7 D 8 I C 10 B 11 12 IJ 14 A IJ D 16 B i7 B 18 B 19 20 A 21 A 22 B 23 /- .>A D 25 U 10 B 27 A 28 B 29 B JU D ,,4 32 D 33 34 D 35 D 5b B 37 A Jd D 39 A 40 B 41 D 42 D 43 D 44 A 45 46 A 47 48 A 49 50 A [/ie de 628 ;:T-7-;* CAU I EAP AN 1 A a L 3 A 4 n U A 6 D 7 o o t2 o A 10 11 C 12 '13 B 14 A D '16 D 17 IO C lo D 20 A 21 D U 22 L ZJ C .A B B 10 L 27 B 28 D 29 A 30 D 5t B JZ B D 34 D 35 B Jrc A JI D aa A 39 D 40 A 41 D 42 B 43 A 44 B 45 D 46 D 47 a 48 C 49 50 B Me de 743 CAU DAP AN 1 A 2 r- 3 B 4 5 o 7 D 8 o L, 10 D 11 D 12 B 13 B 14 A 15 B 16 D 17 18 a 19 A zv 21 22 23 A 24 D 25 D t6 27 A 1A L) 29 B 30 B 31 A 3Z D 33 A 34 D 35 A 50 D 37 D 20 D 39 B 40 B 41 a 42 B A.) B 44 D 45 D 46 47 A 48 A 49 /. 50 D Mad q_&u__ 1 896 -T- -E-AI-AN D L J B 4 B E D 6 B l__ !_ 9 _D _E___ A 10 n 11 B 12 4a A 14 t) 1E D 16 D tt B 18 B 19 D 20 A 21 t- 22 A 23 D .)/ B .E zo A 27 A C 29 B 30 D JI D 32 A JJ B 34 D 35 C JO A 37 U JO B 39 t 40 B 41 B 42 B ,.) A 44 A 45 46 47 A 48 49 A 50 n . AN 1 D 2 B J D 4 D ( o B 7 D 8 I C 10 B 11 12 IJ 14 A IJ D 16 B i7 B 18 B 19 20 A 21 A 22 B 23 /- .>A D 25 U 10 B 27 A 28 B 29 B JU D ,,4 32 D 33 34 D 35 D 5b B 37 A Jd D 39 A 40 B 41 D 42 D 43 D 44 A 45 46 A 47 48 A 49 50 A [/ie. AN 1 A a L 3 A 4 n U A 6 D 7 o o t2 o A 10 11 C 12 '13 B 14 A D '16 D 17 IO C lo D 20 A 21 D U 22 L ZJ C .A B B 10 L 27 B 28 D 29 A 30 D 5t B JZ B D 34 D 35 B Jrc A JI D aa A 39 D 40 A 41 D 42 B 43 A 44 B 45 D 46 D 47 a 48 C 49 50 B Me de 743 CAU DAP AN 1 A 2 r- 3 B 4 5 o 7 D 8 o L, 10 D 11 D 12 B 13 B 14 A 15 B 16 D 17 18 a 19 A zv 21 22 23 A 24 D 25 D t6 27 A 1A L) 29 B 30. B 41 D 42 D 43 D 44 A 45 46 A 47 48 A 49 50 A [/ie de 628 ;:T-7-;* CAU I EAP AN 1 A a L 3 A 4 n U A 6 D 7 o o t2 o A 10 11 C 12 '13 B 14 A D '16 D 17 IO C lo D 20 A 21 D U 22 L ZJ C .A B B 10 L 27 B 28 D 29 A 30 D 5t B JZ B D 34 D 35 B Jrc A JI D aa A 39 D 40 A 41 D 42 B 43 A 44 B 45 D 46 D 47 a 48