THI LY L4 2013 CHUYEN KHTN HN

i0' nris, Ciu 36: Oirt rliqn.ip xoay.chieu co gid tri hiiu dung khang doi U vir tdn s6 f thai.iioi duoc vao hai cliu mdcnoi ti6p g6m 9u01cd.m L co diin trcr tlruib: r ra tp dign cir diin[r]

m"rrfrN* T.I{P? CHUY€N g"g,IN n& rm:rnrt t$ Hsc lAx *

NI6n Vpt ly Thdi gian ldm b&i: 9* plt*t;

{3{} cdu *dc nglti$m}

tlsu l: Dao d$ng cu* m$t v$ li r6ng hgp ctr* ? dao d$ng ctrng phuong cd cdc phurmg tri*t

xi =;trcos{10nt + +) (cm) vi x2= 2cos(iOnt + nJ (cm),lrong dd r tinh hing giiy {s}' Liil$ cua vit rv

3',

thuidi0n r =ls .lir

C*u t: t-{, do dg s6ng ngang k}r6ng truyAn dugc trong chit khi vi trong ling c$c ehdt lang li:

'r clrAi l6ns vi shet khi ci khdi luqng ridng nho hrin chdt rin'

Il hai loai inar nay khdng co tinh din hdi

; il i;;; .nAt rr*y I'idd xuAt hi€n luc din iro; ttii bi bi6n d+'rg lech'

$ cdc phin til ci; h;i loq"i chdt nAv kh6ng li€n k6t voi nhau'

Cfiu 3: r\.{gt tia serrg tring chicu tirkhong khi vao ngoc voi goc rtii la 15{ Chi41 -.-:i::- nwsc d$i v{}i anh

siins nlin thiy ndnr tronfkhoing ru 1,33 din 1.35 Tin: goc klrric x+ cua tia saing bi lgch nhidu nhit'

"i.;.i;;.r ' - - €

n ii,rz*, c, 300 D 60u.

/_."\ / -',

CSu 4: Fhu'rmg trinh m0 ti nrgr song dimg c6 d4ng -:"-e ,, * 5sin{ l3l $ }roti \ 5rr +I; 6;I v*i u vi x $uqc d* b*:ng

cm t li th*i gi3n duqc rlo bnng s Diiim $ chinh gif* m$t birng vi nr$t nirt dso d$ng voi bitn d0 li

A ?,5 "li cm B 3,5 cm fl 5 cm 3 tJ.S crn

Ciu 5: -lrong

so dO khoi cira miy plrrt sdng v0 tuy6n kh6ngco h6phqn nio sau tli-r'.:

.t bie, diiu t? *n-ien C k-hugch dai I) tach sirng

C6u 6: Eoqn n:rryh RLC mi{: v{o mpng tlifn tfn s6 ii U:i cirn khsng le 36 A va dung"kh',ing li la1 f}'

x$u *q*s iri*n *r, tan so fi : l?0 l{e thi cunng dQ dong diOn cung pha v*i difn 6p d hai rl{u ilo0n mech"

Gia tri fr ln

A.4S0 Hz B 60 I"Iz, fl' 50 Hz' D' 3Nl !lz'

csu ?: Dao rt0ng ctra m$t v4t ti t6ng hgp cira hai r1a$ O*e dljf hsn crlng phug::g, cring tsn s6 la l0 Hz,

cring bi0n rlg rdrung lgch pha nha-u h x/3 8i*t v$t ila* d$ng vdi hi8n dS lA l0 \6 cm vi cd pha hrn rliu l"i

*:r,1,1 llign dqr, tin s0 vS cric pha ban ddu ctrii c*c dac d$ng thinh ph{n s€ cS gid tr! l$n lrrryt ln

A, 5 "[ cm 5 Hz al6 vir - ni6 t]' 5 ri3 c*r I 0 Hz^ ni2 r'i 116'

C 10"5 cm, l0 th,-xl3 vi- ?n13. D i0 cm, 1{l l:lz -:rrl?'in '5x!12.

C$u &: Cho mgc6 riign xoay chiiu AB gim hai rlaqrn nrAch Ai\'{ vi hlg mic nOi *6p' ilo4n rnach AM

i* Jie- i*ffi5;;?i tt6 ;fi."a"tiy r co tiru&* uo

" orsn msch MB cil tu dle"n" Klii mic via h*i

ii; ;;;h nrot'dien ap xo"y .t',ico tan s5 fi= 40 Hz thi hf_ si5.cOng suit ctra ioi: ltotl All'1"14 0,6 con cita

c* m+ch la n.g v* *uiog dg d6ng dign s*m pha so

'oi difn dp hai tliu maclr Hoi o tin sd f: l* b*r: thi lti

sd c0ng su6t cira ci rnach AB c14t cuc d4i

cJlu er rrong rn$t mqch dao dene diqn tri tu do lv tuirng,lhui gian -;;:ffiiffiii

va nins luo rfg t& rruung bing nhau li€n ti$p li l0 nrs Hoi thoi gia* d

tri nhO nhit ltn bnng n*a gia rri ton nh6t li bao nhieu'?-

- '

CSu lil: Trong nitch xoay chi6u gim dign tr:*"thsiin R mic v$i t\r di4n c9 eulq t<lfiq Z.^o1t*: tL"::

cdm c* cim kileng Z * 3 z, Vi; rn6r rh&'i di$m <1i*n dp tric rhili tr0n di$n tra l& 10 V, tr0n tr,r di*r l& i tl

V thi diQn dp tirc rhoi liai ddu mach sE la ,

, i, , Trang ,5 - Ma d6 rhi 2{}8

(li rr t"i

: !'i:ll 1, s'arl S6ng dign tu duoc sri dqng rgng rtri trr:nq rhons rin liii: lac r c, ru1.0n r i

1 'rir llltdn s6,cung cir r'*i song irn vi lir s6ng dgc nhu song im.

Ii" n* dc khuech dri.

! -lc.: ir'{or'a" ;i tron cilc bi mar din

D nd di bidn di6u

!f.- l3: Tr$e tlii n-qnief i-$ng ve gian thna iinh sdng, khaang cdch gi*a hai.khe I* l,? mu: kho6ng crich

t* hai kh* rldn mant*

ll * 4*

1uns dring trong trri nghigratn rintisri:re ra''g *J;il;;;a;r;;;;

klnirng t* 4il0 nm d$n ?6t) nm" so a'rrixq *c'n sa;chn tfn *ane ra;;ii* **rl, ,,in o,ing rrung ram 4.5 mm

le

, ' ,: -.

u" 7

Il Khi d6 R = 12, *Zrl

I, I{i sd cong sufr cia mach bang L

{'$u tr3: Di.lu nio sau Jdv la sai khi so sdnh tia hong ngoai

'd tia ru iiroai,J

"1 Tia hdng ngoni co buric scng nho hcrn tiu t,.r ngod - t

B 'lia hsng ngoqi vd tia tirngoqi

d€u kh6r:g ntrin tnii bing mxr thu'ong

C C*ng.ban chAt la song ditn ru

l) Tia hOr:g ngoai ld tia rti ngoai d0u c6 thd tric dung l0n kfnh inh.

CAu I4: Oiiu nao sau d41 lir dirng khin6i v6 hien ru.orrg quang cifinl'

A li hi€n tucmg giim manh di€n_tro cia chdt bin diin thi co anh siine thicli hivp chidu r.iic

1 ii"liTl".ole $jiry manh d6 ciln disn cria chdt.br:n dfrn khi c* snhiang tfricl frqp cfri6, oan

C KH chdt biin dfui dusc 1h sdng rhir.h hqrp chi$u vdo thi ild rr$ rh1nh {tn Ain riii;.

D h hifn tugng rinh s*'g llm br.rr c6c l5 rr6ng ra kh*i ch*t hrfu: c{&n.

Ciu 15: D{t di-cln iip tt = U^J2cosax(U vi <l.klrdng d0i) r,io hai liu do.pn nrach nric n6i tep gsnr hidn

tru R cu6n cdm {huin c.o dg.tq

:T ! vA rp difn c6 diQ* tr'ng c khang tioi el0t zr * 7.c.Th;\;6; R ,j;

c0ng sudl cria mach cJst cuc dri K€t luan n.io dirai dd;,sni? c -" ;

v t2

,1 Cdng suAt cuc &4i P,,^ =

h

C H9 sfi cc,ng sudt cr.iamach U*le *.i1

\,:

Ciu l6: Di6u nio sau d$l scikhi n6i vi sirng,linr!.r rrig rn0t soidayl)

*'ll:i didmndm;1cf.tung so;rg nt rrng k;o*ng crleh bing nhariihi cho dgng cung prra.

t fhlsqi ddl.dudithang rhi rit ca c6c di0rn tr€n dar d€* co r.in r6c khdc lnong - ^

C Hai di€nl nain ciich bgng song nli&ng khoang crich bing nhiiu rhi co bi€n .ir, i,lp ritinr 6iing n;au

il Cac di$m nam gifa hai ntr *+ol"r nhir dao df,ng cr'rng pi*

"oi nir*u.

t,nu l7j D4t 'Jiin lp u.=tiJicoscot{U v,a o khong if0i) viLr hai ciau rnor r}.ran nrach xoay chiJu {.8

g0:n hai doan mach Ah{ vA-MB mEc ndi tidp s*4n mgch AM g6m cugn dfiy rhu** q*m L, *** ,r,li iili,

::i dil'lTo"thuAn R .$opn MB chi c6 ts diq; vCIi dign ,Jung c riry a;i'n*t' irr-it* arC"',rr,,g .-,

'i

cliin Kdt ludn ndo sni?

A Khi di0n iip hir;u dpng trfn do?n MB dat cuc clai thi difn ap tric thui cua doan At,l vu6ng phu voi

didn rip tuc thsi hai ddu mach

B Klii diqn dp hifu clyng !10n doan MB dat cyc dai rhi uuong dd dt\ng ditn rirc tl:cri rrong miich cilng

pha viri didn ap rrjrc thbi hai dliu mach

C Khi di€n rip hiQu d-ung tr€n doqn Ir{B dqt cgc dai thi cuong clo dong dign ruc rhui rnrng mach srrrn

pha vrii dign dp tfic thsi hai dAu mach

n' $f.$$ ap hifu dylgJPn dopn AM r19t cuc dai thi cuirng dg dong di€n rir*hoi trong m4c5crtng

phn vdi dign rtp r*c thoi hai dfiu mach

Ciu t8: L{$t r'f,r clao ddng diiu hoa vui phucrng - rlinh: x * a.orf \2 1)"' {r * 3-1 ln.ii cticm d6ng ndng bing lra

lan th$ nlng lin thf 3013 li

A.2iJ13l s.

6

1

c t012: s.

6

CSu I9r S,{gr c*n lic l& xo thing dung gim v{t n{ng 1009 treo vao lo xc nhg c6 dfr cimg l00N;'m Tu vi

tri c$n bftng kdo v{t xu6ng rngt dogn lcm riii tru3'in cho viit r,Sn r0c diiu l0Vfi cmls hutrng thdng duag

l,iiy g - 10 rn/s?" Ti s0 thoi gi*n lS xo ndn vi gi{n lr*ng m$l chu k!.'ld

Cffu 2fl: N{gt v8t dar d$ng di€u hoa vdri phu*ng trir:.\ x * 4cos{0.5x1 + n:r3) (cmJ trong d6 t tinh hflng gi$y

(s) \'ao thoi diini nio snu dfiv vdt di qua v! tri cd tqa d6 .x = *2S cm theo chi6u duong cua truc toa d6?

Ciu ?l: Phan *ng nlii€t hgch li:

A Su r'0 to t* h4t nhdn loqi r6t nAng thdnh hai nrzurir nhg hcm .

B Slrrhuy$n u4ng th6i cria ciic trei ntran tir citc trpng th*i drnrg c* mirc nEng llrgxrg cao vA mirc n{ng

lunnc thdn hon

'"t:Srr

t6;;irop e hat nhdn loqi rdt nhg rhdnh ciic har nhin n[ng hcrn.

I) $u nsug ch6y cr:a cic hpt nh*n nhq * nhi$t df uao"

Cfiu ??: Trong cdng nghiQp dong diQn xoay chi6u dui.'* 56n su0t vi n6 cd lgi tJrS nic dufi rtdy s1r r'*i dong

difn "A m$t chi€u?

Dnns{ti$n xoay.chiAu

96og ryu1 !61nlu d*ne.di0n::t-:lia:

B C* th* t*i difn rii xa vdi hao phi nh0 nho ciic ma1' bi0n doi di0n Lp

C DSng di$n xoay chidu tao ra duqc tir rrucnrg cin ding di$n m$t chi6u thi kh*ng

D D*ng diQn xoay chiiu gdy t6c dpng nhi$t n:gh hcm ddng di{n m$t chi6u'

CSu ?3: Khi kh$o sit dao d$ng cfia con l6c don l.'oi bi$n dq gdc nhd, ta ph5n tich trgng luc thAnh ir*i

th*nh phdn Fr theo phucrng cira d$y vi P2 vu$ng g6c vtri d*y thi:

;\ Pr co dg lfn tj' l€ rhuan voi goc gi*a diy vi phucmg th&ng d#ng'

B Pr cdn bang vo.i lwc cf,ng cldy do v4t khdng chuv0n d$ng thco phuong cu1r soi ddv

C hai tJranh phiin lgc niy kh6ng thay d$i theo thar sian

$ P2 tl6ng vai tro lir lvc kin v€,

CSu 2d; Trong cdng thfrc cita dinh lu+t phdng xa N1t) = Nn.e - i' thi ]" li'

A H$ng s6 phdng xq- I] Budc s$ng tia gernms cua phdngxg"

C.l.ighlch i$io c*a chu ky bdn r5 $ Butic s6ng cira s6ng im sau vp n$ phdng xq

Cip 25: Con lic dun gOm sgi df,y minh cdch diQn co chiiu dii / * 1 m.qui nqng kh{5i lugng 20 g rich

dign cho quri ngng di*n tich q* - f p C, d{r cr:n lic dsn rrio difn trubng dtu cd crlc du$ng sirc di$n th*ng

drn:g hvdng l€n tr€n, c6 cu&ng dg E *I()s V/n L,6y g = 10 nlsz Chu kj' dao d$ng n.hir crla con lic do:r li

A.6,28is) B 2.81 {s} C 1.99(s] D 1,6?(s)

CSu 2S: Sdng {ig1tt phdt ra tu mQt trsm tren m$t ddt t*i r'$ tin}r.VI}iiASA'I *6r:h m4t ddt}hoalg 420S0

km r6i Fh$n x+ 1rd l?i tram phfl Khoang thui gian giira trni thli di€m phdt v& th* tin hifu xip xi bing

A 0,?S s B 2.8 s C ff"l'l s l)" 1,4 s.

{l:1u 27: Ph;it bi8u ttao sau dd1' ld sai'l

it Bidn d$ cta dar: d$ng ri6ng phg thu$c vAo cdc kich thich ban ddu'

B Bi*n dg cria dao dgnfi Ouyiri pirf, *"$, r,io p]:iri nlr:g lucrng *ung cdp th6ln cho clar: tl$ng trong !

chu kj,

C Bi{n rl$ cria doo d$ng cudng bric chi.phu thu$r: vi* hi$n d$ *ua lgc cu&ng birc

D BiSn d$ cua dao d$ng tar *in giin: cliur rheo thtii gian'

C6u ?S: h,{01 cgn l5c don dao rlgng diAu hoa O thoi didrn vir cd li c16 l& x1 * - 2 cm thi vit {rd vdn t*c 1i

vr = 10.,,5cm/s O rhcyi di0m uat * fi dg ld x: =2i1 cm thi \'.tt cii v$n t6c li v3 = l0 cm/s L:iv g - 19

rr/s2 Chiiu tlni diy treo con l6c ldr

Cfru 19; [,{0t hAt dang chuyin d$ng vdi t$c r]$ bfrng 0,8 lin toc dg fnh sang trong chfrn khbng "l'heo J

thuy6t tgong ddi hgp, dgng nAng K cira hat vA ning luryng nghi Eo cria no li0n h$ r"ni nhau bai hp th*c

Cjiu 3S: li€n mit chAt long c6 hai nguin s,ing k6t t,r'Jp Ol vd O: cach nhau 24 em dao d$ng.thnng ititps

.

vdi phur:mg lrinh: u1 = uz JAcosro1 6lft ttroing crich^ngin nhit tri trung dilim I cira OrOr tldn c5c di6nr

{ren du.rnglrung.lrtt* cira OrO: dar.r dgng cung pha vai I li d = g cm

"*, ;;;;;- - ;r-;;;-;;,;

dreil1 dao dfng \'or bi€n d0 bing khdng?

Ciiu 3l: Tnrng bai: nhi€u ph$n crha mii chu ky'thi cuorrg d0 ciong di€n t*c rhni co gi6 rri lon hon gi6tri

cun crrons d$ dirng diin hi€u dung?

A" l13 B" 1r€ c 1,'2. I) Il4"

C*u 3lr Ch*n *5u d*ng khi ndri vd m*y ph{t difn xoay *hidu ba pha

A'" Ba cu$n d6y cria.statod6ng vaitro cua ba nam chim riifn roaS chiiu tpo rn sr hi6n thien tu th6ng

gir ra h;r clOng di6n bidn thiSn cr\ng tin s6 nhrmg lgch pha X200.

l] Rdto lir narn chdm diin {u.a} t39 ra tit trurmg quay rd linr cho khung rldy cua sralo cilng quay rheo

cring chi0u nhmg v$i vgn tdc gdc nh6 hcn vgn rdi gdc cria rtto.

C R6to 1A nam ch&m di$n quay t4o:a 6 ba cu$n ddy cta s{atn bs suir dipn dgng bi€n rhi€n cildu hoa

nhu:rg l$ch pha nhau rnQt goc kh6ng ddi theo thui gian,

I1" Iln su$t Sifn dsng taa ra d ba cu$n d6"v cria stato h*im taan gi6ng nhau et vg Uign dg vi pha

t'iu 33: !o1e dieu tri ung thu, b0nh nhdn du;rc chi*u xa vdi mgr liiu xdc ctinh ndo d6 tir m6r nguin

ll*nq.Y BiSt ngud"n.cd g]ru k! lrdn ri la 4 nhrx Khi *gur.ln {uq* *y dung lin diu rhi thai gian chJmsr

lidu chi0u xa IA 10 phrit HSi sau 2 ntrm {hi th#i gian cha rn0t tidu chi6u xp oAo k},o$ng irao nteu phrlt?

!:ll l1t tsidt gioihgn qtrang didn ngodi ctia Bac, Kenr lr \atri tuong ung li 0.26gnr; 0.i5prn va 0.50prnr

De kh6ng xdv ra hicn irrgua qurng didn ngodi r:*i v*i vit lifu i*m ril hdn hqp ba chit rrin thi rinh sfrng

kfctrr thich phhi c6 bu*c snng

Ciu 35: Ndu tlng hi$u dign thd giira haicpc cua 6ng phrit tia X rhOnr 3 kV thi viin roc cua ciic elecrron

din a-n6t.td::g th€m 1.2.10? m/s Cho kh6i luorrg cria .'lrctron ld 9.1.10 -'' kg.Khi chua rang hiqu dii;

th$, van tfic crla cdc electron ddn a ndt ld

A 3,8.107 nr/s, B 8,?.107 m1s. C ?.6.107 mls D, 9,.1 i0' nris,

Ciu 36: Oirt rliqn.ip xoay.chieu co gid tri hiiu dung khang doi U vir tdn s6 f thai.iioi duoc vao hai cliu

liui :lu:h mdcnoi ti6p g6m 9u01cd.m L co diin trcr tlruib: r ra tp dign cir diin ciung rhar tldi duoc, Ban

d$u khi tin sff cria mgch giir bbng fr thi t6ng trs cuon div la 100 O DiAu chinh digx?nng ,.r:a tu di€n sa*

cho et"i$n &p hi$u.dpng trdn tp di{n dqt cpc d6i tl$ git di*n.dung *ria tqr di*n ktr$ng d6i Sau C* ttrar, .tsi Un

s$ f ihicuong dd ding diqn hifu dung rronu nrqrch rhu;- Cili '"i khi f = fi = 100 Hz rhi cu<rng,J6 hlgu cipng

kang r::4rch dgt ci:c d+i Tim dg tg crim cria cugn ddy

A L=3N.

ft" B./.= 1ff c, l=!tr.

i

D.i=-* tl .

.4*

ara

Ciu 37: Da* dfng difn tw trong mlch LC ly ru*ng Khi rlign dp gi*a hai cliu cugn ru eim b*ng 1,3 mV

thi cucmg d0 ding di{n trong mqrch bdng 1,8 mA, con khi di$n rip gita hni dAu cr:6n fu c$rn hxlg 0"g mfr

thi cuang dQ dr:ng di$n trong mgch bing 2.4 mA Tim cliin iiungcria rg di4n bi6r if* ru r*m cria nr:gn cam

lirl,=5pH.

A.50 pF" 8.2,5 pF C" ?il pF I) ?5 pF"

Cf,u 38; Khi chi6u inh sang.don sic co brrdc song Il00 run vio m6r pin quang 1iin rhi rao ra suiit di6n

A,v1S ia.0'6.V vi cubng d$ ding difn trong mgch H 10 pA Higu s*dt ctra pin l& 10 91c l-lrn sd ph$tan

chi0u vio pin-trong mdi gidy

A ?"4.10rs Il.l,4.l0rr c,4,g.1018, D {,g.trlir?

Ciu 39: Diiu nao sau clal'dting khi ntii vd rmg dung cua quang phd li6n ruc?

i{ Ding d0 xic rlinh UuOc,ing dnh sring.

B Dung ilO xric dlnh tin s6 rinli shng

C Dring di xic dinl: thdnh ph&n cdu tqro cia ngudn phrir

D Dirng d6 xAc dinh nhigr aq cfia cdc vdt phfiinng da tri nung *dng

Ciiu 4{}: Nguoi ta dung hqt proton c6 dQng ning Kn = 5,45 MeV bin viro hat nhin lse A,ing ,v€n gdy rr

phin ung hirt nhdn lao tlrinh hpt tr vA har nhd:r X Hqt u c6 dgng nirng ld Ko = 4 l,leV vd bay theo hucrng

v-u$::g gdc v$i hudng chuy6n d$ng cia proton toi Coi t<tr6i tuong .tro.* hgr nhin bing s6 $6i ciri

chu::g tinh theo don vi u Ddng ning cua hqt X bing

CSu 4I; Idai dao d$ng diiu hoa v<ri bi0n d0 li Ar vi;\2, c6 ii d$ v*o m$t th*i di6m li xr vi x; turl:lg *xg.

sg l*ch pha cria ? dao d$ng.li gtls niAu nio du$i tl*y s*i?

A x3 vi x: ludn ngugc driu

B kH rngi *ao *$ne ; ;$n ttc Oar cue d+j thi dao d&ng kia *$l cnieu chui in rl6ng

C khi rn$t dan d{ng & vj tri cdn bsng thi rJar: d$ng kia *vi tri bi$n

.) , ,1

^ i", I' i"t, l"

D l_: I +lf I =1

\jr i llt j

C&u 4l: Sau I nim sd nguy$n ttr Coban !|Co giam di 12,?30,'0 {cio phdng xp} so vcii sd nguS'6n tu h*n

dAu Hins so oh6nt xa cila Co6CI li

;:L:i.gfi:io'?r1I. -

f*u +1, ** *s"- chul,in dgng ddn b"* phe hat X sau phin u:rg sinh ra irai hat tr lim ndng lulmg cua

phrin ung hpt nhdn niy, bidt dq hgr kh6i e** hlt *hin X la Arnx = *.04?3u vi n6ng iuqng }i€n kilt ri$ng

cira hat s li 7,i lvleV,'nuclon

A,'fhu l?,4l{eV" $- T*a l?,4 hleV C Toa 32.1 L{cV l} Thu 32.1 h4eV

C*u 44r Chr.rn c&u sai khi ndi vi miiy quang ptrO ting kitth

A" lne chudn trgc m$t ddu c$ m$t ttrdu tcinl'' hqri ry dau kia c'* m$t khe hqp.F

n 6n[ chuin grr: cS t$c d.png tsa rs chtt*r tia so*g song chidu vio hg lin sic.

C Buing t6i ta,hqp mQt diu cd rn$t rhdu kinh h$i ru diu kia co mirt klie hgp F

D ll0 trin sic gdm nr$t ho{c vai lang kinh

Cfiu 451 Trong m$t phAn rmg hat nhAn nhdn tgo ngu-cri ra dririg hirt prutr:n h$n vio h+ilrhAn i Li &ang

dirng yCIn, k€t qua g* ra 2 h+t rx Phan rmg tia ntng lrrqng E $in.thiet hai hat * sau phin img cd cr\ng

rSqr:g '{.co$*tri*rkj' -B.ling600 ndng G6C gi*a hr.rcrng bai' ra cia hai hqt n sau phAn c.ling ung t:ltf c6 rhd }.bing

160n.

USu 46: Ta ntii fnh sing c6 lu$ng tinh s$ng hpt vi:

it [,16i l,f thuy6t s.,:ng tray hqt i'e *n\ sirig d€u cil th€ giAi thirh ttucvc moi thi r:ghifm quang irgc

fi E$ giAi thich kiit qui cta thi nghiSrn quang hgc thi cin ph.{i ** clr,.rng mqt trong hai ly thuy€t song

a:'rh rdng htgc h4t 6nh sing

C Ii,3 giii thich k6t qui c*a mOt thi nghifm thi phai sir dgng ci l1i 6ut6t sfng vi l! th*y{t l"rql r€ inh

siing

S Ttong mQt thi nghifm quang hgc ta cd th6 quan ndt thriy' dsng th0i c& tinh ch$t sdng v;i dnh chAt hqr

cira a;rh s{ng

Cf,u;17: Mgt ngudn 6m nh6 phdt im ding huung trong khdng gian Tgi di6nr r, cdch ngu0n $m nrgt

kho*ng nn rii il*c cu&ng d0 rirn lA aS d.B" Coi 1A m$i tnirmg kr*ng h"'ip thq finr Tpi di6m I3 cdch ;rguirn

Rs = R,1/.1 c6 mt?c cuang dq i.m xip xi bang

A, 1,$?5 MCV It.2.035 MeY" C,4,5?5 NteV $ 3.575 MeV

Ciu 48: 1'a ph$n biit tlu$c gieng ndi cfa hai ngu*i khdc nhau 1* d* 1'6u t5 chinh ni* sau d$-v?

C$u 49: \'1d1' bi€n ap <tuqc ding dd

A biSn

{9j cldng:di:n xoay chi€u rhanh durng tliin rri0t chiSu.

B thav doi tAu so dons di6n

C bid; t1Oi tlong di*n"m0i chidu thanh dong tli1in :oay chilu

D rhay d6i dien ap xoay chi€u

CSu 50: Theo nrlu nguydn lu Bo, nguy'En t* hidro birc xa phdtOn khi ndo?

A khi nguyOn t& o m$t trqng tlrdi c6 nang lugng xic dinh

B khi electron chuy6n tu qu! d4o gin h4t nhdn din qu! dao xa h4t nh6n hon

C khi nguy€n tu d trpg thdi co bin

$ khi eieciron chuyAn iil qu-i' dgo xa h4t nhin d0n qu! dao gAn hat nhdn bon"

oAp AN MA on zos

37C,3880 39D, 40D, 4lA, 42C, 43B, 44C) 45D, 46B, 47B, 4gC, 49D,50D.