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Cdc em chgn cdc cilu dfing A,B C holc D ghi vdo phi€u trd liri dwhi itdy:
C6u I Vt6t 6ng day qiEn hinh h9 co chiAu dii 3l,4cm gdm 500vdng, m6i vdng c6 diQn tich 25cm2 d{t trong kh6ng k*ri Khi cho d0ng tliQn cu&ng AO Uing 6A ch4y qua d6y tht tt th6ng qua 6ng &iy ld:
4.0;015Wb 8.0,025Wb c 025wb D.o,1swb
Clu 2 iho.n c6u tri t&i tfiflng: Anh.s6ng di ttr kh6ng vio mQt chtit i6ng su5t v6i v$n tiSc i=600 thi tia khtc xp (rng v6i [6c
khtc xg r-450 cho vgn t6c anh s,arg kh6ng Ii c=3.108m/s v$n t6c -6nh s6ng ch6t l6ng id: A v:t,Z3.l'05 m/s B v-i,l2.l0r m/s C v=1,73.108m/s D.2,45.10tm/s
C0u Chi6umQt chtm tia s6ng hgp, song song tir klrdng khf vno chdi l6ng c6 chiiSt sudt n=I,78 D6 g6c khric x? ch6t lOng
barg - nta gbc tdi kh6ng khf thi g6c t6i ndy phai b6ng:
A 50025' 8.4/35', C 54915" D 68034',
ca, et-6t i6u mit
"t t rn ria s6ng he.p, song song tir ttrOri! fni vio thriy tinh du6i
g6c t6i Uin! tz" Cho chi6t su6t cia thriy tinh bdng 1,5 Khi g6c tdi tflng th6m 3" thi g6c khric xC t6ng th6m:
A.1,58o B.3o c 1,33o D 1,97?
Ciu 5: Ciro bi6t chi6t su6t cria nu6c e6i vOi thtiy tinh lA bang 0,85 Chi6t su6t ti d6i cta rugu a5i v6i nu6c bing 0,92 Chi6t sudt ti
diSi cia rugu c6i voi thty tinh bing.
,A.0,782 B 1,082 c.0,918 D.0,92.
CBu"6 MQt cuQn d6y c6 tlQ h.r cim L =0,25H Ddng iliQn qua cuQn d6y'gi6m dA1 iIAu ttr 2,8A'd6n l,2A trong thdi gian (2/3) phiit Sudt di6n tt$ng tU cam xudt hiQn r! cuQn diiy kho6ng thdi gian ddng tliQn bi6n thi6n
A.0r1V 0,048V
Cfru Hi$n tugng cim l.h6ng {ny ra tru}ng hgp :
A Ddng diQn xoay chiAu qya Ong ddy C Ddng diQn biOn d6i qua 6ng ddy
,
Cffu M6y ph6t di€n ho?t dQng theo nguyen tdc dr,ra tr€n: A hi$n tugng mao d5n
'C
hiQn tugng diQn ph6n 'CAu Pnat Ui6u nio sau dev la d[ns?
A Khi co ddng ttipn chgy qua 6ng aa], ttrt 6ng Aay 6n tpi mOt n[ng lugng dudi d4ng n6ng lugng tli$n tru&ng B Khi c6 ddng.tli$n chpy qua 6ng d6y thi 6ng ddy t6n tgi mQt ndng lugng dud,i deng co ndng'
C, Khi tU tli$n <luqc tich diQn thl rong tU ttiQn tdriiai m$t n6ng lugng du6i dAhg nlng luo.ng tir truong D Khi c6 ddng tli€n clraV Oua 6nS d6y thi trong 5ng ddy t6n tpi mQt ning lugng duoi dgng neng
f$qng tir trudng 'Cffu l0: Chgn ph6t bi€u sai:
A Tt th6ng bepg tlon vi Wb B Tir th6ng ld tl+i lugng v6 hu6.n!
' C Tir thdng c6 th6 duong, 6m hay b6ng 0 D Til th6ng ld tlei lugng vecto i
C0u 11 UOt ft rng d6y c6tiQn tr&R ,diQn tlch S , d[t trong tt truimg tl6u c6 tlu&ng cim (rng t] B- vu6ng g6c m{t phing khung cam ung tr:r-e Ui6n d6i d6u mQi lugng li AB thdi gian at.COng th&c nio sau ddy tlqOc dirng d6 tinh nhiQt luErg toi ra
khung d0y thli gian At ?
c 0,01v D 0,02v i
B RS AB C S2T4g'),
N o' \arl
B Ddng cliQn kh6ng d6i qua 6ng d4y D Nga! ddng diQn khdng ddi qua 6ng ddy
B hiQn tugng cam ring diQn tir D hiQn tugng kh0c x4 6nh F6ng
.l
D s'llJil
RLt
Ciu 12r UOt Ud chrla nudc c6 cao 90 (cm) vi ti6y pheng dai 2(m) vi dQ cao myc nu6c b6 li 60 (cm), chi6t sudt cria nudc td 4t3.6nh nlng chi6u theo phuong nghiCng g6c 450 so vdi phdp tuytin D$ dii b6ng den tpo thdnh tr€n <l6y b6 ln: A 85,9 (cm)
B 67,5 (cm) C 76,5(cm) D 103,2 (cm)
Ciu 13: Chi6u m0t chtm tia shng song song kh6ng khf t6i m6t nu6c ( n = 413) vli g6c toi le 500 C6c hqp bdi tia khric xq vi tia tdi ti:
A D : 40031' B D :25032' C D: 14055' C6u l4z Chqn c6u tri lli tlfing Trcing hi$n tugng khfic xp 6nh sdng:
D D : 7go2g'
A g6c khitc x+ luOn b6 g6c t6i B g6c lr'tni0 x9 ludn I6n g6c tdi.
C gO" khric xe tl te Urtrfln v6i g6c t6i O tt i gOc t6i tdng aAn ttri g6C kh0c x4_cfing tEng dAn
Ceu tS: Chgn c6u <tfng n6i vA sqi quang.hgc Sgi quang hipc d6ng vai trd nhu mQt 6ng d6n 6nh s6ng dugc ch6 t4o dya tr€n: B HiQn tugng phin xg 6nh s6ng
.PTII TU T
1 ! 3- g 2 10 11 12 13 t4 1-5
16 l7 18. 12 2g 2.1 22 23 24 25, 26 27 28 29 30
;
(2)C Ngui€n ll truydn thlng 6nh s6ng D HiQn tugng phin xq toen phln cria 6nh sdng r
I '
Cdu 16: MQt htnh chii nhQt klch thudrr (cm) x (cm) d{t ttr trudng d}u c6 cam i,ng tt B : 6.Io{ (T) Vecto c6m rirrg tir hqp vdi m{t ph[ng mQt g6c 300 Tt thdng qua hinh chii nh$t 116 ld:
A.2,7.10-7 (wb) B 3.lo' (wb) c z,2.to-7 (wb) D l,24.lo{
(w6).-Ciu 17: M$t khung diy hinh vu6ng c4nh a : 4c.rn gdm 20 vdng <l$t tong mQt tU trudng tt6u c6 cim rlng til g = Z I O{T Vdc to cdrn rlng tir vu6ng g6c v'Oi m4t khung Quay khung l80o quanh mQt cqnh cria khung m6t 10-' gi6y Lrip dlu ph6p tuy6n icria khung
$ song song cr)ng chiAu v6i vecto B Tlnh su6t dign tlsng cim ung xudt hign khung
'A.0,0128V B -0,0128V C.0,0255V
Ciu 18: Khi tiir s6ng ili tir m6i tru&ng su6t n1 tdi m$t ph6n c6ch vdi m6i tru&ng su6t n2 (v6i nz > nr), tia sring kh6ng vu6ngg6cvdi m{tph8n cdch thi '
A ti.a s6ng truy0n thing khi cli qua m{t phdn c6ch gita hai m6i truong
B tit ce cdc tia s6ng dAu bi kh0c xq vi di vAo m6i trudng n2
C t6t ce c6c tia s6ng d6u phin x+ trd lgi m6i trudng n1
D mQt phAn tia s6ng bi khfc x6 mfr phln bi phAn x9
CAu 19 MOt a5n Aien dei 120 (cm), chuy6n d$ng tlnh ti6n ttr trudng d6u, sem tlng tir bing 0,55 (T) Vecto v$n t5c ctia vu6ng g6c voi tha'nh vl hgp v6i cic dudng sr?c t& m$t g6c 300 Su6t iliQn tl$ng gisa hai dAu bang 0,5 (V) V$n t6c cria
D - 0,0256V
CAu 20: M$t tia s6ng hgp truydn til m6i tnldng c6 chi6t su{t n1 = fJvio m6i rUdng kh6c c6 chidt sudt nz chda Uidt pd tia sdng tdi gflp m{t phf,n cdch hai m6i tnrdng dudi g6c tdi o < 60o sE xiy ra hiQn nrsng phfrn x4 toin phdn thi chidt sudt n2 phei
c n2 s lr5 D' o2 21,5
C6u 21: M$t ngudi tlit m6t rongthdng khf quan s6t theo phuong thlng ttrlng m$t c6 boi dudi tl6y mQt h6 nudc sE th6y dnh
cua ca o.vl rr,
A.Gln mSt nu6c hsn vitrf cria c6 .B Xa m{t nu6c hon v!tri cua c6 C Cfing li vi trl ca O CO *re gAn hay-xa hon mflt nu6c hsn vi tri c6 tiy theo -m6t d$t gAn hay xa hon m{t nudc
Clu 22: MQt tia s6ng t6i SI t& kh6ng tl6n gS b6 m{t phla tr6n cria mQt t6m thriy tinh c6 hai mflt song song, dit trong khdng khf,'cho'tia 16 I'R ra ngoii k:h6ng d mgt duoi cria t6m ttuiy tinh Gqi g6c t6i cria tia SI ld i vi goc 16 cria tia I'R Ie i'.
' A:Ta lu6n c6 i'<i B Ta lu6n c6 i'=i C Ta lu6n c6 i'>i.
D.C6 the khdng cd tia 16I'Rhong ktr6ng khi.
Cffu 23: NAOI mi6ne 96 trintr ndn, bdn klnh S(cm; d t6m O, c8m ttreng g6c mQt tlinh OA Thd mi6ng 96 n6i m$t chflu nu6c c6
chi6t su6t n =4/3 Dinh OA & nudc, cho OA =12(cm) Mit d{t kh6ng k:trf s€ thdy &iu A cdch mit nudc mOt khoing l6n nft6t n:
A.OA'=9(cm) B.OA':4,39(om) C.OA'=6,(cm) D.OA'=16(sm) i
CAu 24 Chgn cdu sai? M$t cu$n d6y ddn dugc d{t ttr tru&ng cria mQt nam ch6m di$n cho tt thdng cua tir tru&ng xuy6n
' qua cuQn d6y Voi tfi6u ki$n ban aAu AO, mu6n ldm xudt hi6nsu6t Aen aQng cim rlng cu$n ddy, cAn phii:
A Cu0n d6y cltng y€n tt truUng B K6o cuQn ddy kh6i nam chtm
C Thay aOi frintr d4ng cria ouQn ddy D Tfrqy A6i aOng diQn nam'ihtm tli$n C6u 25 Mu5n lim gi6m hao phi tod nhiQt cta dong tliQn Fuc6 gdy tr6n kfi6i kim logi, ngu&i ta thu&ng:
A chia Hr6i kim lopi nhi6u 16 kim logi m6ng ghdp cach tlipn vdi nhau B ttrng dO dAn diQn oho ktr5i kim loqi
c #khtiki;Gikh6;;"Jft tu
'ang bcn
_ - _ _P.lT.pt,il6n kh6i kim loei mQtl6pson c6ch diQn
CAu 26.Ph6t bi6u nio sau d6y ld kh6ng tl6ng?
A Hign tuqng cem ung ttiQn tir m$t mach tliQn chlnh sg bi6n d6i crla ddrig cliQn mqch d6 g6y gqi li HT tW cim'
B Su6t dign et0ng ttusc sinh hi€n tugng tu cnm gqi li su6t di€n dOng tu cdm I C HiQn tugng tg cdm li mOt tru&ng hqp ttflc bi$t cta hi0n tugng cam rlng tliQn tir
D Su6t fipn tlQng cim frng ciing li su6t tliQn tlQng t.u cim i
" CfrurltKhi mQt ddng tliQn qua cuQn d6y thay ;d#6i"4";e c2illAlsthl xu6t hiQn cuQn d6y suit tfi$n <lflng V DO tU cam
,,j
Cf,u 28: Cf,o 6ng aay a6n ninn trU c6 N: 1000 vdng, dipn tich m6i vdng li l00cm2, 6ng fl6y c6 tliQn trd R = 16f,1 Hai ttiu thrgc niii
tloin mqch, 6ng&y C6t trorg mQittr trusng dAu.Vecto cim ung tt vu6ig g6c vdi crec vOirg aay vd co tlQ l6n tnng ttdu 4.10-2
T/s.C6ng su6t tda nhiQt 5ng d{y ln:
A t0-2 J B to-z w c I J D lw
C6u 29 Md 6n! d6y dii tO (cm), dign tich ti6t di6n ngang cua 6ng li 16 (cm2) g6m 2500 vdng d6y H0 s6 tg cem
-cta 5ng d6v ld: A 0,0251 (H) B 0,0157 (H) C 0,157 (H) D 2'51 (mH)
C6u 30 M6t ring dey aft-oi-cm) c6 t6t cn 600 ning aav-bien tlch ti6t dipn'ngang
"riu 6ng dev ging l2(cm2).6ng
d6y tlusc n6i v6i
*Ot ngrdn Aen]cu&ng <g dbng cliQn qua 6ng aay ta"! tir ri d6n 5(A) Ngu6=n Cien Ca cung cdp cho 6ng dty m$t n[ng lugng li:
c 0,016 (J) Ii:
A v =2,81 (m/s) B v : l,B2 (m/s) thof, m6n didu ki€n
A ne s JI / z B nz2 Ji 12
,I
C v : 6,25 (m/s) D v : 4,55 (m/s)