T}iU'OI\G Di\n HQC SU'PIIAM HA r\iql .TR.UO]\G 'TF{PT CHUYfrN DHSF MA tI6: 173 EE T'E{I THU'EAI HQC ( r.,AN 7} -201,1 naox vaT Li Thrli gian 90 phitt cho bi0t: iring s6 Plang lt: 6,625.10-ia J.s; dg lcrn diQn tich nguy€n t6 e : 1,6. 10-re c; t6c d0 6nh sdng trong chAn lihOng c : 3.108 m/s. I" PIIAN cHUNG cFIo rAr cA cAc rHi sINH (40 ciu, tri ciu I tr6n cau 40) 8.6 MHz. MHz. Cf,u 1" M4ch dao d6ng diqn tu t.u do. O thoi ctitm t = 0, hiQu di€n th€ gifra}ban tL1 lA u = Llol2vddang giim. Sau khoAng thoi gian ngan nir6t Lt : 2.10-6 s thi hiQu diQn the gifta 2 bdn tu dat gi6 tri cgc dai. TAn s6 ri6ng cira mach dao d6ng ld: . A.3 }/{fz. MHz. fuJ* luqng di6n trudng tdp trung s tu di6n vir ndng fr ,,V rhr # dQng ld mdt dao ddng cu0ng bric dudi tdc dsng cria ngudn "#0. bi6u sau? A. Ei0n trulng vd tir hai m4t the hien kh6c nhau cua,JiQn hr tir;cng. v6i m6t dong diQn ggi ld ddng diQn dich. truy€n duoc trong ch6n khdng. Frir li tudng c6 L: 50 prH, C : 50 pF. Dung ngu6n 1 chiOu co su6t diQn dQng e i cho t.u diQn ph6ng diQn qua cu6n cim. O thoi di6m hiQu dign th6 ffOn tp lir u: qua mach ld 8.3fiA. ts. 30 vdn lam, 20 v6n do. D. 31 vdn lam,2l vdn do. Ciu 6. Trong thi nghi$m giao thoa 6nh s6ng, khi haj nguiin k6t hgp cung pha thi vdn siing trung tAm tr6n mdn nim c6ch d€u hai ngu6n. N6u ldm cho hai nguOn k6t trgi'p lQch pha nhau thi vdn s6ng chinh gifra s€ A. xd dich vd phia ngu6n tr6 pha hcrn. B. xd dich vA phia ngudn scnn pha hcrn. C. khdng cdn vdn giao thoa nira. D. vAn nim gita trudng giao thoa. Ciu 7. MQt thAu kfnh ldm bing rnQt lo4i thtry tinh, c6 dang phing l6i, vdi m{t cAu l6i gidi han thAu kinh c6 b6n kinh 30 cm. Chi6t suAt cira thiry tinh AOi vOi 6nh s6ng do vir tim lAn luqt ld n6: 1,490 vi q: 1,510. Kho6ng c6ch gita hai ti€u di€m cta th6u kinh dOi vOi 5nh sdng do vir tim li A. 12,6 mm. B. 24,00 mm. C.50,4 mm. D,25,2 mrt. Ciu 8. Chon ph6t bi€u kh6ng dring khi n6i vd tia hdng ngoai? Tia h6ng ngo4i D. 1 J g. 1 6 luqng tir truong t6p trung d cuQn cdm. B. Nang lugng di6n trulng vi tir truong bi6n thi6n di6u hda voi cung tAn s6. C. Trong m?ch dao ddng lu6n lud chuy6n h6a qua lai giira ndng luqng diQn trucrng vi n[ng Cflu 2. Chon cAu sai? A. Ndng luqng cta mach dao lugng tir trucrng. q D. Dao ddng diQn tir cira m B. DiQn tir C. EiQn tu D. Di6n tir CAU 4. Mach dao :6V tich di6n cho t ffl =. chon ph6t bi6u r", ,d3"#6r bi6u sau? 3V thi cucrng dQ A. 3A C.3^/ZA. D.3/6A. Cf,u 5. Trong thi nghiOm IAng vii giao thoa 6nh s6ng, ngu6n S phdt rc ba 6nh s6ng dcrn slc: Llim)=0,401tm: )-r(lam)=0,48pm; 4G6)=0,72pm. Gifra hai vdn s6ng liOn titip co mdu gi6ng nhu mdu cria vAn trung tdm c6 35 v6n mdu tim. SO vAn miru lam vd vAn mdu do nim gifra hai vAn s6ng li6n ti€p ke tren la 4.27 vdn lam, 15 vAn do. C,29 vAn lam, 19 vAn do. Page I of 8( ma do 173) www.VNMATH.com TRUoNG THPT CHUYEN pl-tSp HA NQI -THI THu EAI HQC LAN 7-(2011) - M6n Vat ri - tUa ei tZ: A. la nhirng bric x4 khdng nhin thAy dugc, c6 bu6c s6ng lcrn hon bu6c s6ng cira 6nh sdng do: 7 2 0,J (tW. B. co bdn ch6t ld song diQn tir. C. duoc img dqng ae tri Ugnfr cdi xuong. D. do c6c vAt bi nung n6ng ph6t ra, c6 t6c dung n6i bat nhat lA t6c dgng nhiet. Ciu 9. Ph6t bi6u nio sau ddy vA dac diOm cira tia Ronghen ld khdng dung? Tia Rcmghen A. c6 khd ndng d6m xuy€n manh. i B. tfc dqng mAnh lOn kinh anh. C. c6 th€ di qua lop chi ddy vdi xentim6t (cm). D. c6 khi nang ldm ion hoa kh6ng khi vd ldm phdt quang m6t s6 chdt. Cfru 10. Trong nguy6n tri hidro, b6n kinh qu! d4o gohr thf ba ( qu! dao M) ld,4,77 Ao. BAn kinh bing 19,08Ao ld bdn kinh qu! d4o Bohr thir A. tu. B. ndm. q c. s6u. D. biy. CAu 11. MQt dung dfch h6p thq bric x4 c6 bu6c D.26,82Yo. Cilu72. Cdng tho6t electron cira nh6m A,. 0,26pm. B. 0,361rn. CAu 13. Anh s6ng ldn quang la 6nh A. duoc ph6t ra bdi c6c ch6 B. c6 budc song nho hon 6nh sdng kich fhich. ng nong. D. c6 thC t6n tai thoi gian crn 10-6 s sau khi tit 6nh s6ng kich thich. Cf,u 14. Ph6t biAu ndo sau ld dring ?t ;ua chAt b6n dAn giim khi bi nung n6ng goi ld hiQn tugng quang dAn. A. HiQn tugng B. Hiqn tugng q cnat Dan oan glam Kru Dl nung nong gol i hien tugng a6n aign bang c6p quang. C. Pin quang di D. HiQn tugng 3llH*':f:il,ffl1?TfJ$t:ho chirng t*thdnh c6c erectron dan gqi ld hiQn tugng Ciu 15. Nang luqng li trong. ,t-:'' cua h4t nh6n dcrteri iH IiL2,2MeY,cua h4t nhdn triti lU n 8,49 MeV. N6u hat nhdn dcrteri vA hat nhAn triti t6ng hqp lai thanh h4t nhdn heli lHethi nang lugng t6a ra ld 17,6 MeV. Ndng lugng li€n ktlt cua h4t nh6n lUeh A. 30,2 MeV 8.25,8 MeV. C.28,29 MeV. D.l9,2lt{"V. Ciu 16. SO hat nhAn nguy6n tu cira mQt m6u d6ng vi ph6ng xq b! giAm 128 lan trong thdi gian 8 tuAn. Chu ki bdn rd cria ddng vi d6 ld . A. 8 ngiy. B. 7 ngdy. C.l6 ngay. D'12,25 ngiry Cffu 17. Ch6t ph6ng xa'|lfo phdt ra tia a vir bi6n d0i thanh 'tipU. ni6t t<trOl lugng c6c hat lir mpo: 205,9744 u, rnpo :209,9828 u, tro = 4,0025 u. Cho lu: 931MeV/c2. Gid sft h4t nhdn me ban dAu dtmg y6n vi sg phAn rd khdng ph6t ra tia y . DQng ndng cria h4t a ld A.5,3 MeV. B:.4,7 MeV. C.5,8 MeV. D. 6,0 MeV. CAu 18. Dung prdt6n bin vdo hat nhAn lAe dimgy€n dC g6y phan tng: p+ no\" -> X + lti.Bi6t dQng nang cria cdc h?t p, X, lti hn iuqt ld 5,45MeV; 4,0MeV vd 3,575MeV. Coi khdi lucr. r,g c6c h4t tinh theo u gdr' bang sO khdi ctra n6, Goc hgp boi huo.tg chuy6n d6ng cua cfuch4t p vd X gan dung b^*g "*- l 1 50- - .n. f ZOt. o -C. OOo. D.DOo. " ?age2 of8( naa aa lr:1 www.VNMATH.com TRUONG THpr cHuysrrr onsp Ha NQi-rHI THU'DAr Hoc LAN 7-(20r l) - M6n vat ri - if.{e dA r73 Cfiu 19. C6ng suAt birc xa toAn phAn cfia Mdt Troi ld P :3,9.1026 W. KhOi tuqng M{t'['roi hiOn nay duoc u6c tinh ld 1,99.1030 kg. Ntlu c6ng sudt birc x4 ctra M[t Troi kh6ng ddi thi sau bao nhi6u nam ( i. mOi ndrn co 365 ngdy) kh6i luqng ctra n6 bi gi6m di 0,1% do bric xa? Chon dhp tn dirng. A. 14,9.10e ndm. 9.15,6.108 ndm. C. 14,g.l0r0 ndm. n. i,56. tOe nam. C'f,u 20. Nhimg tucrng t6c c6 b6n kinh t6c dpng lon la A. tucmg t6c hAp d6n vd tuong tdc y6u. E. ttrcrng t6c manh vA tuong tdc diQn tir. C, tumig tdchhp dAn vd tuong t6c diQn tu. D. tucrng t6c hAp d6n vd tucmg t6c m4nh. Cffu 2X. Chdt di6m dao dQng di6u hda voi phuong trinh x:6cos QAfi nl6) (cm). O thcyi di6m tr ndo d6 vdt c6 li d0 x : -3 cm vd chuy6n dQng ra bi0n. O thryi di€m tz:tr + 0,025 (s), vflt A. c6 li dO x : 3cm vd chuy6n dQng vO v!tri cdn bang. B. c6 li dQ x :3J3 cm vd chuydn ddng ra xa vi tri cAn beng. C. co li dd x = -3 6 cm vh chuy6n d6ng rt xa vi trf cqr bang. , D. co li d0 x : -3.6 cm vi chuy6n dQng v6 viftf cdn bing. Cdu 22. Conl6c ld xo c6 dQ cimg k, lan luqhpqsz #c6 khdi luolg gap a lan nhau thi chi€u ddi cta lo xo khi con lhc 0 vi tri cdn bang tucrng $iqg|Ut' : 25cm; lz :- j8cm. L V gia t6c trgng trudng E = /T2 =10(m/ s'). Ntiu treo ddng thsi 2 v0t vaffd xo thi con llc dao dQng di6u hda voi chu kj, A.2Ji0 s. 8.02n60 *,s c.0,2.6 r. D.2Js s. Cffu 23. Con l6c ld xo dao d6ng diAu hryq"rffit vi tri cAn bing. Tr.uc to4 dQ c6 g6c 0 vi lrf cdn bang, phuong doc theo truc ctta ld xo. 5H ua, UtFn"ffi"g bilg, v4n tdc c6 d0 lon 20n cml.s. Gia tdc khi v4t toi bi€n ld uoLr rneo rruc cua ro xo. fi.ru vat or Fqvfiqcan oang, van toc co oo lon zvft crUs. ula toc K_tu vat tol Dlen la 2m/s2. Thdi di6m bar dAir .,,dt c6 \$ -irXO cm vd chuy6n d6ng v6 bi€n. LAy nz :l}.Phumg trinh dao dQng cira vAt ld T\ f A. x= 2}cos(nr+Lri,){cm) # B. x= 20cosQrt-TlV*1. x = 20cos(nr +-r\km). f B. x = 2}cos(trt -7)km). # .n Sz* ft. , c. x= 20sin(llt-3jr). D. x= 20sin(rt-ftlft4. Ciu24.M0t v$t "h6 lihdmdrg m: 20A gdusc treo vdo mQt ld xo kh6i luqng khdng d6ng k6, dO cring k. Kich thich dt con l60.dao ddng di€u hoa vdi gia t6c cuc dai bing 16 m/s2 vd co n[ng bing 64 mJ. D0 cimg k cua lo xo vtsvqabc cuc dai c0a vdt lAn luot ld A.40N/m; 1,6its. 8.40N/m; 16cm/s. C.80N/m;8 m/s. D.80N/m; 80 cm/s. Ciu 25. Cho hai dao d6ng di€u hoa cirng phucrngi Xr : Arcos(ot + nl3) (cm) vi X2 = A2cos(at - nlT) (cm) (t do bing giay). Bi6t phucrng trinh dao dQng tdng hqp ld x : 5 rE cos(olt + g)(cm). Bi6n dQ dao dQng A.2 c6 gi|tri cuc dai khi A.1 bing A. 1015 "*. B. 15 cm. C. ls Ji "^. D.20 cm. Cfru26. V4t dao d6ng di€u hoA cu m6i pntrt thpc hiQn duoc 30 dao dQng. Khoing thdi gian gifra hai lAn . li6n ti€p md dQng ndng cira v{t bing mQi nira co ndng cira n6 ld A.2 s. 8.0,25 s. C" 1s. D. 0,5 s. Ciu27. Con lic don treo O tran bu6ng thang m6y. Khi thang mfy drmg y6n con lic dao d6ng di€u hda vcri chu ki T. Khi thang m6y di l6n voi gia tdc c6 d0 lon a: g3 thi con l6c dao dQng diAu hda voi chu ki A. {3r . 2 B.+ /3 C.4T . 3 D.3T . 4 CAu 28. Ph6t bi6u ndo sau dAy kh6ng dring? A. Trong s6ng co hoc chi c6 trang th6i dao dQng, tric ld pha dao dQng dugc truyAn di, cdn bdn thdn c6c phAn ttr mdi trulng thi dao dQng iai ch6. Page 3 of 8( rua dA t73) www.VNMATH.com TRuoNG THpr cHUyEN oHsp iA Nqi -THI THu EAt Hec I-AN z-izot 1) - M6n vat lr - irra oA t;s B. Qu6 trinh truyAn s6ng co hqc li qu6 trinh truyAn nhng luong, cdn qu6 trinh truyAn s6ng diQn ttr thi k:h6ng truyAn ndng lucrng. ' C. Bu6c song lir khoAng c6ch giua hai di6m gAn nhau nhAt trCn phucrng truyAn s6ng vd dao d6ng . cirng pha. D. Bu6c s6ng ctra s6ng co do mQt.rgudn ph6t ra php thuQc vdo ban chAt m6i trudng, cdn chu kj' thi khong' x . +^ 1 - CAu Zg. Tr€n m+t chAt long c6 2 ngu6n dao dQng vdi phuong trinh: ue = acos(60nt); ua=acos(60al+z). Vin t5c truyAn s6ng v:.60cm/s. Coi bi0n dQ s6ng khdng d6i trong qu6 trinh truyAn s6ng. X6t 2 di6m M, N tr€n m{t chAt l6ng cAch c6c ngu$ A, B nhtTg khodng lAn luqt ld: MA: l5im; MB : lgcm; NA : 2Icm;NB : 24cm. Ph6t hi6u ndo sau ddy ld d6ng? A. M dao dQng voi bi€n d6 2a; N dung y6n'' \* B. N dao dQng voi bi6n d0 2a;M dimg y€n. ._, &. C. CaM, N ddu dao dQng vdi bi€n dQ a. F* \ D. Ca M, N tl6u dao dQng vdi bi€n d6 1,5a.'d',\* ;dil,, io* im cuong dO ;" gi6m di e lAn. Kh-oafupch d ban dAu ld A. 20 m. B. 30 m. 5. q c'?0 m. D' 25 m' CAu 31. Mirc cuong-d9 aT do mQt ngunffi;iifuiem M, N d cung irtria vcri S lAn luot ld 120dB vd 80d8. Mric cudng d0 dm d trung di6m r . a L A. 100 dB. B. 85,934 dB. \ , ClhS,SZ+ ae. D. i05,934 dB. CAu 32. Cho mach dign AB g6m mQt tu diqnl rn&fien tro R : 30 f) vir mQt cuQn 9ty- lh:1" cAm mdc rroilicp ,rr." amg thu tg nhrivira n6$oi M ld drFm ndi riira tu diQn vd diQn trd, N ld di6m ndi gita diqn tro va cu6n ddy. Eitt vdo Asra ffi*r {p xoay chiAu uAB =UJlcos(arxz) thi diOn 6p hiQu dpng UeN = 150v vd uNas:200v, aong thoffiier 6; tfc thdi unrvd urul€chpha nhau { - oungkhdng 2- Ciu 30. MOt di6m M c6ch ngudn Am mQt {<hoqrg d;6 d0 Am lir I, cho ngud.t dm dich xa di6m M cira tu diQn vd cim kh6ng cua cu08.dAyg6 gi6 tri lAn lucrt ld A.Zc:22,5 t2;Zt:40O. - -# B'Zc:20 O,Zv:45O' C. Zc: 40 f)', Zr: 22,5 Q' . D.Zc:18 f),Zr:50O. Cdu 33. Cho m4ch diQn nhu hinh v€. CuQn ddy thu6n cdm, tu diQn c6 diQn dung C ={ f' DiQn 6p 3n xoay chidu: uAR: 220Jtcos100nt(V)' S0 chi c6c tri cua R vd L lAn luqt ld v6n kti lAn luqt ld lJt:220JJry); U2:220v. Gi6 ) A. r0J:ei; #H. 1 c.20Jr ei, ' H. 'l}n I 8.200.; - H. fr ? D. 40 J3 fr: - H. ' 'ljn CAu 34. Dong cliQn xoay chiAu trong m6t m4ch RLC mic nOi tiep dang chim pha so v6i diQn 6p cr hai dAu do4n m4ch. Mu6n xity rahiQn tuqng cQng hucrng diQn trong m4ch ta phai . A. tdng diQn dung cira tg diQn. B. tdng hg sO tu cirn cta cuQn ddY. C. giim diQn tro cria m4ch. D. giArn tAn sd dbng diQn xoaY chidu Page 4 of 8( ua ite 173) www.VNMATH.com CAu 38. NOI trai cuc cira mQt m6y ph6t thuAn R.: 60 f), mdt cu6n d6y thuAnl TRuoNG THpr cHuyeNbnsp HA Ner -THr rHr-rEAr Hec LAN ?-(2011) - M6n var li - Me de r73 CSu 35. MOt dQng co diOn xoay chi6u c6 diQn tro d6y cuOn ld 20 O. Khi mdc vdo m4ch c6 diQn 6p hiQu dung 200 V thi ddng co sinh ra m6t c6ng sudt co hoc ld 210 W" Biiit hd sd c6ng suAt ctra d6ng co 1A 0,85. Cu'cnrg dd dong di€n hi€u dung qua dQng co ld 4.2,25 A. E. 1,5A. c.7,0 A. D.6,25 A. CAu 35. Di0n ndng <y mOt tr4m phdt diQn dugc truyAn di du6i diQn 6p (o dAu ducrng dAy tdi) ld I 10 kV, hiQu suit cua qu6 trinh tniydn tdi diQn Id H: 84%. Cdng suAt diQn truyAn di dugc giir khOng AOi. NeLr diQn 6p o clAu duong dAy tdi duoc tdng l€n220 kV thi hi€u suAt cria qu6 trinh truyen tdi dien dpt gid tri 4.96%. 8.92%. ,C.90 oh D.98%. Cf,u 37. Mqch nhu hinh v6: uas : 240sin100nt(V); i: "12 sin(100nt - xll2)(A). C6c vdn k0 chi c6c gi6 tribing nhau. HiQu di6n th6 gifta2dAu c6c v6n k€ vu6ng pha v6i nhau. Gi6 tri ctra r, R, L, C IAn luqt ld A. 60.'.6 Q; 6o0; 6 11, $ r. n 6r!3r B. 12oo; IzoJta; 1 HtyF. *,o 7T OlT c. 6oa; 6oJ5o; -L6'A a;$ r. ir 6n D. 12oJJs:; t2oa; ]-a;Jo-'r. 2r lt '.ttiOu mQt pha vdo hai dAu do4n mach AB g6m diQn tro 0t tu dien mic n6i ti6p. Bo qua di€n tro c6c cuQn ddy cta miiy phdt. Khi rdtc ctra m6y qu tOc dQ n',.'ong/pht1t thi crrdng dd dong diqn higu dUng 7T .: Cf,u 39. Trong mach diffi"xodlchiAu, diQn 6p gifia hai ddu do4n mach vdL ctri,ng dQ ddng dign trong mach hn tuqt ld u : 100 cosl 00nt(V) vit i =6sin(100nr +:)@). C6ng su6t ti€u thu trong m4ch li ' 3" trong do4n mach ld I A vd don4diQn fri\!tri trong m4ch chdm pha :- so vrii diQn dp tirc thoi gita hai dAu do4n mach. Khi r6to .uu #ur'ou*, #u uOi tO. d0 2n "Ur*r*,f, thi dong aien t *g *u.n.un* pha vdi di6n 6p tric thdi gifa h?t&*do4n m4ch. Cuong d0 hiQu dung cira ddng diQn trong mach khi d6 pha vdi diQn 6p tfc thdi effia frffido4n m4ch. Cuong d0 hiOu dpng cira ddng diQn trong m4ch khi d6 A. 2J1@) B. ,[1<.!. c. 4(A). ]]. 2(A). t 'u r# # Cf,u 40. M4ch diQn xoay chidu gdm mQt tp diQn c6 diQn dung C : fffOlmic n6i ti€p v6i cu6n ddy co I di€n tro thuAn R : 50 Q vd d0 tu cdm L = ]-(U). E4t vdo hai dAu mqch mQt diCn iry xoay chiAu u : 50Ji cos2rft (V) thi dong diQn trong m4ch trong mach ld A.50Hz. B. s0 Ji H". II. PHAN RIENC: nn6i thi sinh chi dugc tirm mQt trong hai phf,n: phAn A hoic phin B. A.Theo chucrne trinh Chuip ( 10 cffu. tir ciu 41 d6n ciu 50) . Ciu 41, MQt doan m4ch AB g6m hai do4n m4ch nho AM vir MB mac nOi ti0p voi nhau. Doan mach AM g6m diQntroR:40 Q micnOltiepvoimQtt.udiQnc6diQndunga:tl-'O.Do?nm4chMBgdmcuQnddy c6itQ 4n t.u cdm L vd diQn trd thuan r. Khi d4t vdo hai dAu A,B mQt diQn 6p xoay chidu thi diQn 6p tuc thoi gita hai dhr c.150 w. D. 260 W. c6 cucng d0 hipu dUng I : 1 (A). TAn s6 cira dong diQn C. 100 Hz. D.200 Hz 4.212 W. B.300 w. Page 5 of 8( ua ac lz:y www.VNMATH.com TRU'ONG THpr cHUyBN pusp HA NOr -THr rHU'DAI Hec lAN z-1zo t r) - M6n vat rr - ua ad tz: do4n m4ch AM c6 biOu thfc: uAM = 80cos(100a t)(V) ;cdn diQn 6p tuc thoi gita hai dAu do4n mach Iv{B c6 bi6u thirc: uMB =200J7cos(100rt *ff>fv>. DiQn trd thuAn vd d0 tu cdm cira cuon dAy c6 gi6 tribing A. r: 125 O; L:0,69 H. B. r: 15 a; L:0,69 H. C. r: 100 f); L:0,55 H. D. r = 1000 ;L:0,976H. Cku 42. Mach di6n xoay chiAu g6m diQn tro thudn R : 50 O mic nOi tiep v6i cudn d6y. Dat vdo hai dAu mach mQt diQn 6p xoay chid;u u : UJ-cos(I00 ftt) (V). DiQn 6p hiQu dpng o hai dAu cuQn dAy ld U, : 69 1 mach lQch pha I so voi u vd lQch phu l so vdi uo. E0 tu cALrn L vd diQn tro thuAn r o'3 cua cudn dAy co gi6 trf A. L= f-n;r:5of). B. L=!rrr=25e. 4r'2r c. L=!ot, =25J1o. D. L =#r1l,:, = 25Q. '4r*- Ciu 43. M6t mach chon s6ng gdm mQt cuQn cAm L: 4ltF v.tspQt tp diQn c6 diQn dung bi6n d6i tu Cr: 10 pF d6n Cz : 490 pF. Lay n2: 10. Mach tr6n thu aut'flaarqOnp .o bu6c s6ng trong khoAng tu A r?mdAnR4m B. 12md'eft16#m. B. 12 m demO#n D.24m deh ffi *. hofi ddas bYnh thr Chu 44. MOt dQng co kh6ng ddng bQ ba pha t offi.amg bYrh thucrng khi hiQu diQn th6 hiQu dqng gifta hai dAu m6i cudn dAy le 100V. Trons khi d6 ctri.cO\*lr0t &"g iri6n >:oay chiAu ba phzr do mQt miy ph6t ra dQng ccr hoat dQng binh thuorlg thi ta phii mdc C. Ba cu6n ddy ctra m61"tfth6t t nh sao, ba cuQn dAy cria d6ng co theo hinh sao. D. Ba cuQn ddy cira m6y hinh sao, ba cu6n ddy cua ddng ccr theo hinh tam gi6c. Ciu 45. G6c chi6t quang cua lSg tintt Ua"g 60. Chi. Chi6u mOt tia sdng tring vdo m{t b6n cira ldng kinh theo phuong vudng goc t&rhing phAn gi6c cira g6c chi6t quang. Dat mQt man quan s6t, sau ldng kinh, song to.tg ,roi *at ptta"! gi6c ctra g6c chi6t quang cua l6ng kinh vd c6ch m{t niry 2m. Chi€t ,uAt ",ru t"ang tirh AOi voi tia EO G .,u": t,SO ua AOi v6i tia ti; la nt : 11 ,56. DO rQng cua quang ph6 li€n tgc trdn mirn quan s6t bdng A. 6,28 mm. 8.12,57 mm. C. 9,30 mm. D. 15.42 mm. CAu 46. p6 ion hod nguy€n tir hidro, ngudi ta cAn mQt n5.ng luqng la 13,6 eV. Bu6c s6ng ngin nh6t ctra vach quang ph6 c6 th€ c6 duoc trong quang ph6 hidro ld A. 91 nm. 8.1 12 nm C.0,91 pm. D. 0,071 p*. ciu 47. cau tric nio du6i ddy kh6ng ph6i ld thanh vi€n cira mQt thi6n hd? A.12 m d€n 84 m. C.24 m d6n 160 m. A. sao si6u m6i. B. 16 den. Ciu 48: Chqn ph6t bi0u sai? A. Ncrtrin6 ld hat so c6p. B. Ncrtrin6 x,rAt hign trong phAn rd, a . C. Ncvtrin0 xuAt hign trong phdn r5B. D. Ncrtrind ld h4t kh6ng mang di€n. CAu 49. iviQt con l6c don,d6y treo diri l, dugc ireo iai tri cdn bing t6i li dQ goca,.T4i thoi di6m ban dAu, C. qruaza. D. punxa. noi c6 gia t6c trgng truirng g. K€o con lic ra khoi vi ). ri ^ t' nguoi ta truy6n cho quir cdu con Idc vdn t6c v, theo Page 5 of 8( tvta dc 173) www.VNMATH.com TRUoNG THPT CHUyeN OHSp HA NQI -THI THU'DAI HQC LAN 7-(2011) - M6n Vat lf - rua ai tz: phuong vu6ng goc v6'i sgi diy, dC no Uit aAu dao ddng xung quanh vi tri cAn bing . Bo qua mqi ma s6t Ifti qui cAu di qua vitri cAn bing , v{n tOc v cita n6 c6 d0 l6n A. v= vi +2gt(1+ cosa,) . B" v=fi1klg "r"j D. v= fr 4rc-*t",j C" v=fi,'+g(t-cosa,). Ciu 50. MQt s6ng co hoc lan truydn tr6n mQt phuong trurydn sting. Phucrng trinh dao dQng cua m6t di6m M n€n ; , ^ / \ n1 ,\ I 1 phuong truy€n song d6 Id'. ur,:3cosrt (cm). Phum-rg trinir dao dQng ctra m6t diOrn N tr6n piruoirg truy€n s6ng d6 ( MN : 25 cm) ld: u * = 3 sin (nt +L)@m) . Ph6t bi6u ndo sau ddy ld dung? /v\4" A" S6ng truydn tir M d€n N v6i v{n tOc 2mls. B. S6ng truyAn u N d6n M v6i vfln tOc Zmls. . C. S6ng truyOn tir N d6n M vdi vdn t6c lm/s. D. S6ng truyAn tir M d€n N v6i vdn t6c lm/s. B. Theo chusxe trinh lifrne cao ( L0 cfiu. tir cffu 51 tl6,n ciu 60) ThA nhE ffa 2 xu6ng dia 1, sau mdt khodng thoi gi ndng quay cua hai dia ld A. W. CAu 52. Cho bidt: h: 6,6?5. iOro Js Chi6u 6nh sdng c6 budc s6ng lo4i c6 c6ng tho6t A: 2,48 eV . N6u u t"lT_ 2 dia quay voi cung v4n t6c goc . D0ng D. W14. : 1,6. 10-te C. vio caioi cta rrr6t te b,i , euar:rg clign liirn bing kir t giira anot vd catot la lJerc : 3V thi dQng nang lon B.W12. A.8,8.10-'nJ. 8.v,9 t0-'nl. ff c.5,8.10-reJ. D.9,6.10-'eJ- Cffu 53. Cfro f.frOi luqng ve dqt*r di€n ticflcfia electron lAn luot ld m:9,1.10-3' kgt . : I,6.l.q-'n C. lrone ngu.ye.n tu hidro, ihi elefronchgV€n d6ng tr6n qui d4o K c6 b6n kinh ro: 5,3.10-"m thi electron c6 l?! %' ,"r. " " 1,n3&' r, c. 4,38 106 m/s. D 4.38 107 m/s Cf,u 54. Ngtroi ta xAc dinh t6c$fog$u m0! ngudn Am bing c6ch su.dung thi6t bi do tAn sO am' Khi ^ o ,l a- 'gng thing dd,fif,S" tnict Uidang dfng yen tni thict bi do duqc tAn sd 6m ld 724H2, nguon am cnuyen o( -:-; : ' - i '^ -iu;6;;O'"#ha;g?4" vdi cung to"c aO Eo ru *u thict bi thi thiet bi do dusc tAn s0 dm con Knl nguon am cnuyen oong tnang oeu vul oulrg tuu uu uu la Ail uiltrr ul tlll t le 606 Hzl niet neu#SFeqgl&t bfluOn cung nim.trCIn mQt dtTg ,11ng, tAn s6 cira ngu6n 1* p"lil* nhdt ctra quang electron khi dpp vdo ia f.f-tO"g bai ta tO. AO tt"y[h!#rong m6itru"crng bing 338 m/s. T5c d0 cua nguOn Am nhy (xAp xi) ld A.35 m/s. 8.25 m . C. 40 m/s. D. 30 m/s. CAu 55. MOt con ldc vflt li co kh6i lugng m:2 kg, momen qu6n tinh I : 0,3 kg.rn2 , dao d6ng nho t4i noi c6 gia tdc trong truong g : 9,8 rn/s2, xung quanl mQt trgc q.ray ni* ngang vdi chu ki dao dQng 2,00 s. Kho6ng c6ch tir truc quay ddn trong tdm ctra con l[c ld A. 15,1 cm. 8.20,2 cm. C.23,4 cm. D. 18,2 cm. C6u 56. Khi mQt c6i thu6c chuy6n dQng dqc theo phuong chiAu dii cira n6, dQ dii cia thudc do duoc trong hQ qui ohi6u qu6n tinh f ctri Uing L6t nuu uo u6i chiAu ddi riOng ciia no. Gqi c ld tdc dQ 6nh sdng trong chdn kh6ng. T6c dQ cria thu6c so vdi he K ld .c A. 2 t^ c. t{' . 2 t; D. tv' . a J Ciu 57. Chqn cdu dring. Theo thuytit Big Bang thi A. Ba phrit sau ihOi OIC* Pldng m6i xuAt hiQn cdc liat co bin dAu ti€n. B. Ba trdm nghin ndm sau thdi,di€m Pldng m6i xu6t hiQn c6c nguyOn tu dAu ti6n. C. Ba trdm triQu ndm sau thoi di6m Plang mdi xuAt hiQn c6c sao vit thi6n hd. PageT of 8( rua de 173) www.VNMATH.com TRUONG THPT cHUYsN ossp HA NoI -THr THUEAI HeC IAN z-1zot l) - M6n vat ti - irla ai rzs D. Nhi€t dQ trung binh hiQn nay cta v[ try ldL T: 27 K. Cdu 58. Phdt bi6u ndLo sau ddy la kh6ng dririg khi n6i vA m6 men d6ng lucrng cta vft rdrn quay quanh mOt truc cO ainnZ A. Don vi do momen ddng luqng ld kgm2/s. B. Momen d6ng luong cira vAt rin ti 16 vdi vdn t6c g6c ciia n6. C. N6u t6ng c6c vecto luc t6c dung l6n v{t rin bing kh6ng thi momen dQng luqng cua vAt rin duoc bAo toirn. D. Momen dQng luqng ludn ctng ddu v6i vAn t6c g6c. Ciu 59. M6t vft rin quay nhanh dAn d€u quanh mQt tryc c6 dinh xuy6n qua vdt. MQt diOm tren vat rin h6qg nim tr€n truc quay,c6 A gia tdc ti6p tuydn hucrng vdo tdm qu! dp. B. gia t6c tiOp tuy6n ngugc chiOu vdi chi6u quay cua v{t rdn cy m6i thsi di6m. C. dO lon cira gia tdc tii5p tuy6n lu6n lon hon d0 lon cira gia t6c huong tAm. D. gia t6c ti€p tuy6n tdng khdng d6i, gia t6c huong tdm tAng dAn. Cdu 60. M6t v6t rin quay quanh truc c6 dfnh theo phucrng trinh g:30 + 50t -t2; trong d6 g tinh theo rad, cdn t tinh bing s. G6c vAt quay duqc ke tt thdi di6m ban dAu cho d6n khi n6 dimg lai ld A. 6-55 rad. 8.625 rad. C. 640 rad. HET D. 1630 rad. www.VNMATH.com D;Aru oE rnl rutf DAt Ftec l-Rru rnu z 1 rnArue 6.z0tr,) rrwlngTHPTchuyan M6n: VAt t}i Lau tuiD 171 MDL72 MD173 MDLV4 Cdu MD L71 MD L72 MD 173 MD 174 L D B c B 31 B D B c 2 e A D B 32 B e A D 3 c A c D '33 D c A c 4 D D B D 34 D D D E 5 ts B c c 35 c B B c 6 D A A A 36 A D A A 7 A c B A 37 A A e B I E A c D 38 a B A L I B D e A 39 A B D e 3.CI D e e e 40 e D c c L1 B L B D 41 ,ro o c D L2 A D B c 9A ,uf rp T q&e D A x3 A c D c i*g ,,1 G* ? D A A L4 D B D pfl ,4: ;UD A A B ,iE IJ B e c lfts "A A B A 16 A A A d'l 4& A B A L L7 c B {N A,& 47 B A L B 18 A c J; 5fr B; Yqg A r B B 19 n c iifrl\ lB 49 c B B t) 20 e q ', tV D 50 E B E c 2L e B'n\ PD B 51 c B B e 22 D B c A 52 D B e A 23 c D c A 53 B e A F{ D 24 B E D D 54 B A D A 25 f c B B 55 c D A c 26 A A D A 56 A A c B 27 B A A c 57 D e B c 28 c D B A 58 A B c D 29 e A' B D 59 c c D B 3CI c c D c 60 B D B B www.VNMATH.com . DAt Ftec l-Rru rnu z 1 rnArue 6.z0tr,) rrwlngTHPTchuyan M6n: VAt t}i Lau tuiD 171 MDL72 MD 173 MDLV4 Cdu MD L71 MD L72 MD 173 MD 174 L D B c B 31 B D B c 2 e A D B 32 B e A D 3 c A c. ti€p ke tren la 4. 27 vdn lam, 15 vAn do. C,29 vAn lam, 19 vAn do. Page I of 8( ma do 173 ) www.VNMATH.com TRUoNG THPT CHUYEN pl-tSp HA NQI -THI THu EAI HQC LAN 7- (2011) - M6n Vat. con Idc vdn t6c v, theo Page 5 of 8( tvta dc 173 ) www.VNMATH.com TRUoNG THPT CHUyeN OHSp HA NQI -THI THU'DAI HQC LAN 7- (2011) - M6n Vat lf - rua ai tz: phuong vu6ng