THI LÝ L6 2011(SPHN)

Trong c6c phuong trinh sau, phuong trinh ndo m0 ti chuy6n d6ng cira vflt dao dQng di€u hoi?. NOi trai cgc ctra mQt m6y ph6t diQn xoay chidu mQt pha viro hai ttiu elopn m4ch'AB gOm diQn t

Cho bi€t: hing s6 Pldng h:6,625.10-3a J.s; d0 16n diQn tich nguy6nt5 e : 1,6.10-re C; ttic dO

6nh sang trong chdn khdng c = 3.108 m/s _ !

I PHAN CHIJNG CHO fAr ci CAc rrri SINH (40 ciu, tir cf,u 1 tllin ciu 40)

Ciu 1 Trong c6c phuong trinh sau, phuong trinh ndo m0 ti chuy6n d6ng cira vflt dao dQng di€u hoi?

A x: 5.cos(10t + n).sin({ - l0t) (cm)

J

B x = stcos(10t +f )

C x: l.sin(l0t - n)

rnti'oNc E4.r HQC s{l rx4,nr HA NQr

TRrtoNG THPT cnuytN onsp

Mn dij : 161

A 1,2(lttr);0(N)

on rru rFruDAr r{gc (r-AN 6) -2011

MOn vAr li

Thdi gian 90 philt

D x:2.cos(1O).sin(l}t-n/2) (cm)

Ciu2 Mdt con lic ld x9 gdm mQt quA cAu 3hd m: 100(9) vd ld xo c6 dQ gring.k= 40Qrl/m) duo.c treo thing dtmg NAng qui cdu l€n thing $ung bing l$." F: l,2$l) cho toi khi qu6 cAu driiig y€n r6i bu6ng tay cho qidao A[ng f6y g = l0(m/i2) Luc ddn h6i cgc d4i vi cgc tiOu t6c dung l6n gid treo ld

(cm)

(cm)

B 2,2(I',1); 0(N)

C 1,2(ttr); 0,2Gt0 D.2,2${);0,2(}[).

Cdu 3 MQt vQt au" aOng di€u hda tr€n trgc Ox voi cliu k]'T, trong mdi phrit vgt tfurc hiQn dugc 30 dao dQng todn phAn vi cO iOc AO trung binh lA 0,16 m/s Khi qua vi hi cdn bdng, vft c6 t6c d0 bine

A \n(cm I s) B 6n(cm / s) C 76n(cm / s) D l2r(cm I s)

C,nu a MQt con lic ld xo c6 d0 crme lr 2N/m, khOi luqng m : 80g dao_aOnq1{ diu tr€n mi! pfrinq

nim ngang do c6 ma s6t, h0 s5 ma s6t trugt giira vpt vdr mit ngang la 0,1 pan d.au kdo vflJ ra kh6i vi trf

cdn bing *Ot eoan l0 cm rOi tna nhe Cho gia t6c trgng trudng g = 10 m/s2 Th6 ndng eira vflt md t4i d6

A.0,16 mJ 8.0,16 J C 1,6 mJ

?.-1,6 J.

Ciu 5 MQt v{t dao tlgng di€u hda v6i phuong trinh li dQ: x = 4cos(0,5nt -4)@*) trong d6 t tinh bing

6"

giay G) Vdo thoi di€m ndo sau ddy vgt di qua vi tri x = ZJi cm theo chidu duong cira trpc tqa clO?

Ciu 6 Chuy€n dQng cria mQt vflt c6 dflc tinh la cf sau nhiing khoAng thoi gian bing nhau nh6t dlnh thi trqng th6i cta vflt lai lap lpi nhu cfi Chuydn dQng cira v{t d6:

A ld dao dQng tuAn hoan.

B ld dao dQng di6u hda

C ld qua trinh truyen s6ng

D c6c d6p 6n A, B,C ddu sai.

Cfru7 MQt d0ne hO qui l6c d€m gi6y (c6 chu ki bing 2s), qu6 l6c dugc coi nhu mQt con lic dcrn v6'i ddy treo vdLvQt nang ldm'bing OOng-cO'mrOi luqng ri€ng li A-IOO.tg/m3 GiA sir 0"."g tti treo trong chAn

khOng pua abn! hO ra kh6ng di ttri chu ki Ouo Aqng.tta nd bing bao nhi€u? eiet khOi luo'ng ri€irg cira kh6nE khi trong"khi quy€n la t,l kg/m' BO quu Anh:huong cira llrc cin kh6ng khf d€n chu ki dao ddng cfia con llc Chgn d6p An dring

A.2,00024 s ts 2,00035 s C 2,00A12 s D" 2,00015 s'

Ciu B MQt s6ng co truy6n tu' khdng khf vdo nttdc, dai luo-ng kh6ng thay d6i lA

,4 chu ki ctra s6ng B t6c dO cfia s6ng C buo'c s6ng D ndng ir-ro-ng.

Page 1 of 7( ua ai te t;

TRUoNG TFIpr CHUyEn ogsp HA NOr -rm rHu EAi HQC t AN O-1ZO1 1) - M6n Vat li - ua oa re t

Cffu 9 MOr day ddLn hai diu c6 dinh dai 1,5 m, dao dQng ph6t ra dm TOc dQ truy€n s6ng k€n d?'y 1d240

p/s Khing.eiirh ndo sau cldy lh sai?

A TAn s6 am co bin ld 80 Hz .

B Chu ki cua ho4 0m bdcZlit6,25'10-3 s' '

D TAn sO ho4 6m b0c 4 ld 330 Hz '

ciu 10 cho phuong trinh s6ng dirng tren ddy ld: u = 5cos(4nx)sin(100nt + nll) (crn)' trong d6 t tinh

bing s Van t6c truydn s6ng tr€n dAy ld

A.2o(cmis) B 25(cm/s) c'10('g:l' -, +^ tj-l:fl*^ +;-,^ cflu 11 Hai ngudn k€t hqp s1 vir 52 c6ch nhau mQt khoang ia 50 mm oeu ciao dong tileo pnuong iriiut

rr = acosf2o0nt) rnm tren mdt nu6c Bidrtoc dQ truyAn sing tr€n mflt nu6c 0,8 (m/s)-vd bi€n dQ.s6ng

*fri;'iili';'d4,.,.;i:'ifi;ilea' "r.at tr€ndubng trung trsc ctra srsz dao tl$ng nsusc pha vdi c6c -ttguOtt nim c6ch ngudn 51 bao nhi€u?

A 32 rnm B" 28 mm' C' Z!

^ry" D' 26 mrn' ' - ?

Ciu 12 Trong mQt do4n mach diQn *ouy

"r,iAu RLC mlc noi til5p, khi xAy ra cOng,fucrng thi ph6t bi€u ndo sau ddy sai?

,q bien 6p tiic thbi tr€n doan m4ch bang di$n ap ffi, thci tr€n di€n tro- ,: '

b" fa;e Het ap m" trtoi tr6n tu eien va-trcn cuQn cim b+g khi:g

i iare Aii" ab hiQu dung tr€n tq <ti6n vir trgn cu6n cArn bdng kh6ng' , I

D DiQn 6p 6ic;6;; eid t'ui ctAu elop m?tq.leng dlql 6q hiQudimg tr€n di€n tro'

ciu 13" Gii str c6 mOt ngu6n diQn xoay

"rtia" ri-drgn-6i oletr 9u1te ot-4t"1, cdn,tdl

s6 goc tly 9:t

trong mQt pharn vi r6ng Mach diQn xoay ;*;khilg phdn nh6nh'R|L,,C, fv 11:6,l*uong diQn khi ra" Io #ctra ddng diQn qua maoh ld a;, Mach diQn xoay chiAu kh049

lh?" nh{nh Rz'Lz'Cz ,xby ta .0"* nlu"rdiEn khi tAn sO g6c cua ddng diQn,qua mach.li ar, N€u,m€s hai neach djQie d6 ndi ti€p nha':

r.ai irOi *a" uao nguOn dien thi d6 c6 cgng hudng, tan s6 g6c cicira ddng dien la t:

A" o= l: ifr o=

\-7* r:,

L,o, + Lra4 L'a + I

Lr+L,

Cffu 14 Dit viro trai A-Au cuOn s<r 96p cua mQt m6y bi6n 6p li tusxg.(bo qua h4o phfl 'mQt A1€n iq rayaf chidu c6 ei*tii hrc;;;il;;ft6fti u'.* * nie"

9u1g eirra hai JAu:S:,thT^ndp d: ho ""'* la- 100

V N6u tdng rhem n vdng ddy 0 ien,o i6p tfti Aietap-iliei aung q1ta.h1i 93" * ho cfia cuQn thri cap la

U, n6u giAm bnt n vdng d6y d cuQn so t[p ,fti.Ae1.6p'hiQu aUng gli'a hai,diy d6' ho"cua cuQn thrl cdp ld

2u N€u tdng th6rn 2nvdngday o *O"l[,i lap tni iien'ap higi iung giira trai dAu ee hd cria cudn day ndy bing

can, rslsiiiJ, u osng

",,rici",noatq9 nrr"

q"a1,1it r,1ort, gone co diQn." vdi,edng suAt dinh miic P vir di€n 6p dinh mtlc U, ndu nAng cao hQ s0 cOng suAt thi lirrn cho

A cOng suAt toa nhiQt tdng'

B" cuoirg dQ ddng diQn hiQu dgng tdng'

C c6ng suAt ti€.r thir di€n.hfru ich tdng'

D c6ng suAt ti6u thtl P giAm'

^ a,

r-i cau 16 MQt may;;'il;;iJ6F;a sd vdng ddy 1u on,so^cAp vd,l.^:A?

P:":,t:10' hTg*ot ta mac vdo

hai dAu cu6n rhir cAp mQr dQng co z4v - ltiw,io nq ro cong sudt 0,85 MAt mat ndng h-rqng trong rn6y bi€n 6p 1d krr.ng Aii*'ila.ile;il; co ho4t iiong binh thuon! thi cuong d0 hipu dung tro*g cu$n scr c6p

IE

TRUtNG THpr cHUyBN pHsp HA Ner -THI THIJ EAt uec IAN 6-(201 l) - Mon vqr ri - ivre ae rot

CiulT.DoanmachxoaychidugdmdiQntrothudnR:20f),cu6ncimthuinL:+Hvitudi€nC

10r mic n6i ti€p Dat vio hai clAu doqn mach mOt diQn 6p xoay chidu, khi d6 biiiu thu'c cua diQn 6p tr€n cudn cim thuAn ld ur=50cos(100a t ++)(V) BiCu thtc ctra diQn 6p giira hai diu diQn tro R ld

J

t

A un=loocos(loo

", *flw>.

c un =tooJ2cos(i oon -+)U).

B Lto =100 sin(I002 , * !) (V)

D kh6ng bi6t duqc vi phg thQc gi6 tri cira C

Cffu 18 NOi trai cgc ctra mQt m6y ph6t diQn xoay chidu mQt pha viro hai ttiu elopn m4ch'AB gOm diQn trtr thuAn R= 30 O mic nOi tiilp uOi^*Ot tg diQn 86 qua Aien trO cdc cuQn d6y ctra m6y phk fni rOto

cira m6y quay d6u voi tdc dQ n vong/phft thi cu'dng d6 ddng di€n hipu dpng trong do1n m4ch lA I A Khi rOto cria m6y quay ddu vsi tOc dQ 2n vdng/phrit thi culng dQ ddng diQn hiqu dung trong do4n mach liG A N€u rdto ctra m6y quay d€u v6i t6c d0 3n vdng/phrit thi dung khang cira tq ld

A 4.6(fi) B 2.,6(f,) c 16\6(0) D 6.6(f)).

Cflu 19 Chqn phSt bi€u dring?

A Chi c6 ddng t1i€n ba pha moi t4o ra dugc tu truirng quay

B Rdto ,iu adng .o kh6;g Aone tO quay voi t6c ttd !U; 4 fi trulng quay- i

C Vecto cim img tu ctra til tru'crng quay ludn thay d6i ci v€ hudng l6n tri s6

:

D TOc dQ g6c ctra dQng co kh0ng d6ng bQ phg thuQc vdo t6c dQ quay cira tii htl'qng vd viro

momen cAn.

Ciu 20 D{t vio hai dAu mQt diQn tro thuAn mQt diQn 6p kh0ng eOi cO 916 tri Uo thi c6ng suAt ti€u thp h€n di6n trs li P Nr5u dflt vio hai dAu di€n tro d6 mQt diQn 6p xoay chiAu c6 gii tri cgc dpi Uo thi cdng

A P n.Jip c.Plz D.zP '"; f i

Cffu 21 Mdt mpch dao dQng ea; "rO" thuAn cAm L vd hai tir C gi6ng nhau mac n6i ti6p, ttrOa K mic o hai dAu mQt tU C (hinh _vC) Mach dang hopt d$ng v6i ddng diQn cgC aei trong m4ch li Io thi tad6ng

kh6a K ngay t4i thsi di6m ning lugng cliQn truong vd ndng lugng tu truong trong mach dang bdng nhau.' Gi6 tri cuc dai ctra ddng diQn trong m4ch cira m4ch sau d6 sE:

i

A giim.6,r J&-

B giim.on &.

4"4

14r

c gi6m

"on

Vi/' L D gidm.on {.'\lL

Ciu22 Cic tfnh ch6t sau,c6i niro kh0ng phiitinh chAt cria s6ng dign ti? '.,' :

A S6ng diQn tu lan truyAn dugc tiong c6c mOi trulng vflt chAt vd trong chdn kh6ng

B Vfn tOc truyAn sdng diQn tu phU thuQc vio mOi truong huydn I ., -'

C S6ng diQn tu tudn theo c6c dinh lu4t phin x4 vdL khric x4 nhu 6nh s6ng t4i m4t ngdn c6ch giii'a cdc m6i tru'dng

D S6ng dign tu kh6ng bi m6i trtrong truyAn s6ng h6p thg,

.

3nF EiQn trd cira cu6n ddy lh R = 4 f) .DC duy tri dao dOng diQn tir trong mach v6'i hiqu diqn th6 circ dai Uo= 9V tr€n h,r diQn thi phAi cung cdp cho m4ch mQt cdng suAi

A 4,92 mW 8.6,80 mW C" 3,65 mW D.4,05 mW

Cfrtu 24 Cho m6t m4ch dao clQng L,C Bit5t diqn tich tr0n tU di€n phu thu6c tho'i gian theo bi6u thirc: q:3sin(l05t+nl2) (ptC) Ctrdng dQ ddng diQn cr,rc dai chay trong mach ld

A.0,3A E chua th€ x6c clinh duo-c C.3.1054 D.3.10-5'4

Page3 of 7(Ma ae tol;

TRUONG THPT CHUY€N onsp liA NQI -THI TI{U DAI HQC LAN 6-(2011) - Man vAt li - ma ab rol

Ciu 25 Chi€u mqt tia sing tring hqp viro mit b€n ctra mdt ldng kinh co g6c chil5t quang

- )

.A.: 6g0 Bi€t g6c l€ch cira tia virng le.u;;a; crro crrict su6l cira 6nhi6ng vdng vir tim ldn luot ld no

:1,52;n,: 1,54 G6c lQch cira tia mhu tim ld:

A 55,200'

i rvsrr ""';:6;";;

cau 26.Trong thi nghiQrn l-dng v€ giao thoa 6nh s6ng, khollg c6rch tir hai khe d6n mdn D : 1

'2 m' D4t

giira min vir hai ,,d';0, th6" f.1"fr

19i ioi"o"

"frftrf;,]" ttrAi tcintr vu6ng g6c 1di

mdn)' ngudi ta thiy

c6 hai v! tri cira thau kinir c6ch nhau 60 ; rrt arrt ro ndt.cira hai khe trcn man' o vi tri md inh lfn.hon'

kho.ng c6ch irnh t

"i iit " ra, 2,4 mm.B6 ;ilil;{"h t",

"t ic, s6ng hai khe bing mot 6nh s6ng clon sdc' ta

;a;ffi"e"f van i:0,78 mm' Bu'6c s6ng cira enh sale

fa.^

A.720 nm B' 480 r'm' C-' 640 nm' D' 520 nm'

Cia51.Trong thi nghiQm l-dng vA giao thoa 6nh s6ng, *i1 "U* dugc dirng !1i"tt s6ng don sic' Ban

dflu khe s c6ch d€u hai khe 51 ua sr.rre., mi" ttt" auic mOt G"uan giao ttroa rni oho khe S dich mot

i-i" t*a" itt." pft"*g song sgng v0i hai khe Sr vi Sz thi

A khoing vin khdng it6i'

B d0 rQng cira trubn-g giao thoa giAm'

;:;6;tu' quan s6t tuqi ta"g'

D vin trung tdm dich chuyCn ctr.ne cliA,u,u,fi

l- - .", :

Cflu 28 Quang pnd ti6n tpc"ph6t ia boi hai v.1t ktrac nhau thi

A honn ioan kh6c nhau O mqi ntuQt d0' '

B hohn toan gi6ng nhau cr mqi nhi€t dQ'

c: ;5',f"hJ;"4., -ai vat c6 m.t nhi*t dQ thich hqp'

; gaqt nhau' n6u hai vflt c6 ctng nhiet d0"

Cffu 29 C6 thdph6t hien tia hdng ngo4ibdng

C kinh 6nh h6ng ngo4i'

"^., rf*l*lllj;;l;*.fn"[T"ffi::frH|;;;1"'?l'-,,ti1".'i:r'Tq,62s i0r4J s, c:3 108

;iJ;-: i::o:i;'b Budc song nga,' nt Atcua tii Rcrn-ghen c6,th6 ph6t ra iir

^-';';;-,oi'* -

-t.l,ii:ii.'' - ,, - P'r:'7:al: *^-^ ^hA- ,.hA

CAns 3!." Cho: hing sO elang h : 6,025.i'-'oi,''),9" AO

1n *ng o"ng chdn k&dng c

: 3"108(n'r/s); dO l6'n didn tich ctra electron ld e : 1,6.10-'i;: NI"t Lrrqng t*u pttE on"*g v6i 6nh s6ng tim c6 btr6'c s6ng)" = 0,42rylit

A 5 eV 8.4,73Ja'2s J C"2,1eY ' D.2,96 eY '

cflu 32" Phat bir5u ndo sau clay ld dirng t

,ng n6ng gqi jihign tugng quang ddn A.'Hien tuqlig Aien trO-cua ch6t ben din.gi6m Ih:,9i:'

B Hisn o*E ;;d d6n ln hiQn ruqng ddn di€n bdng c6p-quang'

C' Pin q,r*g=ai9;iitrti6t bi thu nhi€t

"itu ann

s6ng m4t tr}i'

D HiQn tuqng 6nh s6ng giai ph6n;;l;;1*"" rier t'etja cho chirng tre thanh c5c electron din

eoi ler hi€n tuong quang di€n trong'

L'eu 33 Anli s6ng ldn quang la 6nh s4ng

- r d, r-r- r

A" duqc.phal ra bdi iac cn*'rin' ctrAt ldng vir chAt tctii'

B c6 th6,o,' ia rr""g inoi giun iait-r"n 1b-6 s sau tct'itit 6nh s6ng k(ch thich'

C" c6 budc tOtg tltO ito" b1'"g s6ng cira trir^shngkich thich'

O a,tq" ph6t ra khi mQt chAt rin binung n6ng'

Cfiu 34" Khi chi€u viro tAm 96 s,,'n *au iO *Oi"tHft"ianh sing tine' ta tfraV 31eO c6 mirr-t

TR{JoNc rHPT c}ruypN pnsp HA Ngr -rm tru'pAi Hgc r-AN 6-(201 l) - M6n v{t li - ua oc ror

Cdu 35 Dirng hpt prdtOn c6 ddng ndng 1,2 MeV bin viro hgt nhdn lLt dtng y6n thu duo-c hai hata c6

cungtdcdg.Chomo:1,0073u;mli:7,014u;nto:4,0015u; lu:93l,5MeV/c2.G6ctaobdihu'6ngbay

ctra hat pr6t6n vd h4t a li

Ciu 36 N[ng lucrng trung binh t6a ra khi phdn hach m6t hqt nhlnzl]U liL 2A0 MeV MQt nhi m6y diQn

h4t nhdn dung nhi€n lidu urani trdn dugq lirm gidu 25%o, c6 cOng su6t 1200 MW, hiqu sudt 2}%.KhOi

lugng nhi€n liQu ti€u thu mOt ndm (365 ngdy) ld

A.2304,5kg.B.9218,5kg.C.8975,5kg.D.9834,2kg'

Ciu 37 U238.phAn rd thinh Pb 206 v6i chu kj, b6n rd 4,47.l}e ndm MQt kh6i de duo.'c phrit hiqn c6

chri'a 93,94.10-s kg U238 vd 4,27JT's kg Pb206 Gid sri khOi d6 hic ddu hodn toirn nguy€n chAt chi c6 U238 TuOi cira kh0i de le

Cdu 38 Ggi t li khodng thdi gian de sO nat nhAn nguy€n tu cira mQt ch6t ph6ng xg gi6m cli e lin Sau thoi gian t : 0,51.t, sO hpt nhdn cira ch6t ph6ngx4 t16 cdn lai bao nhi€u phAn trdm?

Ciu 39 H4 nh6n'?]lPo hic diu dung y6n, thlrc hiQn ph6ng x4 a vi bi€n d6i thanh chi Pb DQng ning hat

o, bay ra chitim bao nhi6u phin trdm n[ng luo ng t6a ra trong phAn r1?

Ciu 40 Trong sO UOn hdnh tinh: Kim tinh, Thi0n vuong tinh, ThO timh vi MQc tinh, haiih tinh khOng cung nh6m v6i ba hinh tinh cdn lai ld

D MOc tinh

A Kim tinh B Thi6n vuong tinh C ThO tinh

II PHAN nmNC: Mdi thi sinh chi tlugc lhm mQt trong hai phin: phAn A ho{c phffn B

1' 1

-l

A Theo chuone trinh ChuiT ( 10 cfiu, tir ciu 41 ilain c4u 59) '.

Ciu 41 Cho hai dao clQng di€u hda cirng phucrng, cirng tAn sO ' .

xr = 6cos(l }rt)(cm) vi xz = 4sin(l0 nt +fl(cm) Phuong trinh cria dao d6ng t6ng ho.p ld

A x=7,2sin(l0nt-0,98)(cm) B x =1,Zcos(l}nt-0,98)(cnt) .

C.x=7,2sin(l0nt+2,l6)(cn|.D.x=7,2cos(l0xt+2,l6)(cm).

Ciu 42.Eat diQn 6p xoay chi€u c6 gi6 tr! hiQu dqng 220 V vdo hai dAu mQt h6p den X thi cuong dQ

ddng diQn trong mach \d"0,25 A vi ddng diQn s6m phan/Z so voi diQn 6p hai dAu do4n mach Cfrng dgt

diQn 6p d6 vio hai diu hQp den Y thi cuong dd dong di6n trong m4ch vdn \d,0,25 A vd ddng diQn cirng pha vdi diQn 6p hai dAu doan m4ch NCu dat diQn 6ptr€n vdo hai dAu doan m4ch gOm Xvd Y rnac n6i ti€p thi cu'dng dQ ddng di6n trong m4ch s€ ld

A 5,28.106 (ndm)

C 3,32.108 (ndm)

a,.9t.

4

' A LrLz: RrRz

C L1+Lz = Rr *Re .

B 3,64.108 (ndm)

D.6,04.10e (ndm)

c Er.

2

8

o Jl e,

Cf,u 43 MQt.doal mgch AB g6m hqi do4n m4ch nh6 AM vd MB m6 n0i titip v6i nhau; Do4n m4chAM gdm diQn to R1 qic nOi UCp vdi cuQn thuAn c6m c6 d0 t.u ctrn Lr Do4n mgch MB g6m diQn hd R3 m6c n6i titip v6i

., I ; ^

voi ctrQn thudn c6.m c6 dQ f r chm b Khi dft vdo hai dAu A,B mQt diQn itp xoay chi6u, ggi t6ng tro cira do4n

mgchAB ldZ,tdngh0cfia do4nm4ch AMldZt,t6nghocua dognm4ch}/r9ldh.Eez=Zr*Zz,thiphdic6 mdi li€n hQ sau

B Lr Rr =LzRz

D Lr Rz: I-zRr.

C6m 44 Boni nhi6t hach dung phAn irng D +T -+ He + n Bi6t khSi luo.'ng cria c6c hat nhdn D,T vd He lAn lu-ot ld, mo:2,0135tt, tlxr =3,0l60tt,trlu" = 4,0015u, khiii luo.'ng cira h4t nld ru,, =1,0087u Cho:

Page 5 of 7( iua da t6l)

TRUoNG THpr cHuyslr oHse HA NOi -THI Tiili aril HQC LAN 6-(201 1) - MOn vat lt - Iv{fr d0 161

lu:931 ,5 y+; l MeV:1,6.[013J;s6Av6gadrdNn :6,02.102]mol-l'Ndngluo.ngtdarakhi lkmol

"c

heli dugc t4o thdnh la

D 1,89 10rs J

Ciu 45 Cho d6 thi cira culng dQ ddng di$n xoay

L:-L ,,< niA,, +Lio nrr)mo rlA dino rti6n xoav chi€u

chiAu nhu hinh v5 Bi0u thric cuong dQ dong diQn xoay chi€u theo thh

gian lir:

A i = 40.cos(100nt+ nl3) (mA) .

B i:40.cos(100ru1- n/3) (mA)

C i:40.cos(50nt + nl3) (mA)

D i_:40.cos(50rt - n/3) (rnA)

O -40

Cflu 46" MQt con iae dmr dugc tieo vho trAn cua mQt xe 0 t

dang chuy6n dQng theo n]ruong lganrg Clu ki,dag 10n9.:"u

con l6c don trong trucrne hqp xi chuy€n thing tl6u lA.Tr' khi xt

lllia?TJi1':ll-"ffi-Tffi: :"PJ,,.5;;t'#';.; ilA; "l"l:l do:e fill,i:li:l vdi gia toc

;'fi,r";"iil';'"d#"uod "na* ia" e , u"oi gia toc a n rr Bi€u thirc To:u" *r,g:"* t

A.Tz<Tr<Tl B'T1 :T2=T3' C:T'=Tl>Tr'

Cffu 47 O+i AiOm chung c{ra s6ng co vi s6ng diQn tit li

A" s6ng dgc'

B kh6ng mang ning lugng'

C truYAn du'oc trong ch6n kh6ng'

ca., +JL? #i:L:lfff# J# ifi? *1,11).'"-(2)^:i,ng chi6u t6i mQt th6u kinh r6i:Qdrm bing thui' tinh) theo phugng sons sons vfi 1rl,:.hi;:G\;h ;e)ti11i,qi.iu .na" sau dE ld chfnh x:ii?

a br'ict J"at ot u th;i tinh ddi voi

1.-h ti".e yq u"1ti1 :

:

sdng (1) l6n hon ctritit suAt

"':u tlt"1i tinh d6i vcri 6nh

s6ng rmg t"

voi tia sing(2).

n Wang luqng cira photon {rng voi tia s6ng (1) nho hon

ndng luo ng cria photon {riig v'3i tia s6ng (2)'

"

c"iieu dic* chung cua thau kinh cho c6 fuai tia s6ng ld

(dicm)

*'

^

-* q6ng r,rns ,6i tia s6ns ( 1) co bi.rdc s6ng ngin hon 6nh s6ng ung vdi tia.saog-(?)

^

lJ ntlil JGr15 s1(E

cau 49" Trong mOt thi nghiQm giao thoa anr, rang volrral khe IAng (Young)' trong viihg'wN t1e1-man

;;; ;;;,;;;; ," aa* duqc i3 van s6ng v6i tu{ vd N ld hai vdn s6ng irng voi bu6c s6ng 2' =

.0'45/m'

;;;;;;; u,a., o,en thi nghiQm, thay nguon sang don sic vdi bu6'c s5ng t, = 0'6aW' thi s0 van s6ng trong midn d6 ld

F tdng gAP ru$i

D gl6m con mdi Phtra s6r-r

D" 9.

E ll

Ciu 50 Nhfi'ng iu-oi3g titc c6 b6n kinh t6c dgng lryn le

A tuong t6c hdp d6n vd tuong t6c y6u'

B tu'cmg t6c m4nh vd tuong tdc diEn tu'

C" tucrng tt,r,hdp din vd tuong t6c diQn-tLt'

D tu'ong t6c hAp ddn vd tuong tAc manh'-

- - ,'

B Theo ctrue,ra-e trien*rN.irag ca-o.( 1.0 c4u tg p-a-u-51 d€+ cau.6s'!

Cffu5tr'Chi6ubircxadiQntiLc6bu5.c'o'@&at6bdo{Lran9.lii*.:|l."j;"i-:

},:l;; ffi;,:1",i1H#,.,4, #"";il?;,M cl*e do'di,.,g q.,u*g aren uao noa rir 0,32 mA Hi€u

suAt luong tu'lh

A i,0 Yo' B"A'8 eh', t" 1'5 Vo' D" 1'8 Yo'

Cffsr 52" Khr d0ld,i:] cfia 1-rc tdng l€' gAp 3 lAn vd cbtthlay ddn tdng ghp1lanthi momen iuc doi vdi mQt

+-', -rr-rr rA

IILrL q4-r4J DU

-6!, H,larrl tevtl 114- Pl14a1 ss'

'{- L rsrrE b*y v'rbnct rin s6':lin.

TRLI0NG TFIPT CHIJY€N oHsp HA NeI -THI THLTDAI Hec LAN o-1zor l) - M6n vat ti - Me do 161

cffu 53 MOt vat r6n quay xung quanh mQt trpc co ointr theo phuong trinh: g:20 -l0t - t2, v6i rp tinh theo rad, cdn t tfnh theo gi6y G) ph6t bi6u ndo sau d€y ld dung?

A Vat quay chdm dAn d6u voi gia t6c gdc bing I radAz

B Vat quay ch6m dAn d€u v6i gia tdc g6c Uing Z rud/sz

C Vat quay nhanh dAn ddu v6i gia tr5c g6c bing I rad/s2.

D Vat quay nhanh dAn dAu v6i gia t9c g6c bang 2 rad/s2.

Ciu 54 MOt vAt rin c6 md men qu6n tfnh'dOi vOi mQt truc quay cO dinh ld 1,5 kgm2 D0ng nlng quay cta v{t la 300J VQn tOc g6c ctra vAt c6 gi6 tri

C$u {5 MQt v4t rin dang quay quanh mQt trr.rc cO ainn voi tdc dQ g6c ld 8 radls thi bit dAu quay nhanh

ddn d€u v6i gia t6c g6c 1d2,5 nd/s2 Khi tga dQ gdc biiln thi€n dugc 32,2 rad thi vft dgt tOc dO gOr n

A 12 rad/s 8.20 rad/s c 15 radls D.72,5 radrs

CAu 56 Mdt con l6c don gOm qui cAu kim lo4i nh6 khOi tuqng m, tich diQn q <0, ddy treo nhg, c6ch di6n, chiAu dii l Con lic dao dQng diAu hda trong cliQn truong d6u c6 E ho*g thing dung xudng duoi

Chukidaoel0ngcitaconlicducy.cx6cdinhbingbi€uthric:

B.T=rnE.

ilg'-(€)' lm A.T:2n

C.T=2n

1-J-t/e'*(99)' Tm

Ciu 57 MQt dodn tAu h6a dang chuy6n ilQng tr6n dudng ray thlng vdi t6c dQ l5m/s thi kdo cdi phdt ra

dm c6 tAn sO g45Hzhuong

"€ rnQt *.n niri O phia tiudcl T6c dQ iryAn 6m tiong k{rOng khi h ::O m/s Hinh kh6ch ng0i tr6n tAu hOa d6 sC nghe th6y tiCng cdi phan x4.to ua.fr nti trd fii frOi t"An rO ta

Ciu 58 Cho: hdng sO ehng h= 6.^625.10-'o (J.r); tdc dQ anh sring trcrng chAn kh6ng c = 3.108(m/s); dQ l6n diQn tfch ctia eleckon li e = 1,6.10-1eC Cdng tho6t electron cira mQt kim lo4i l,rZ,q eV;Niiu chii5u dOng

thoi hai bfc x4 c6 bu6c s6ng ,! =0,30ptn vd tAn s6 fr: 1,5.1015 Hz vdo t6m kim loai d6 dat c0lip thj

diQnth6 lcrn nh6t cira t6m kim loai d6 ld

CAu 59 Mdt thanh el0ng y€n c6 chiAu dei fu Iftithanh chuytin dQng d€u theo phuong trung vdi trpc

cira thanh thi chi€u dei ;i; thanh ld to/2 Gqi c ld t6c dQ 6nh sang trong chdn khbng, tOl aO JhuyCn dQng cria thanh ld

r=

ci').

A

-.

a

J

t=

c "{ j.

2 Cflu 60 MQt thiOn hi c6ch Tr6i DAt cira chirng ta 200 000 n[m 6nh sring TOc d0 ehay ra xa chring ta cria thi€n hd d6 ld

A 1700 m/s B 17000 m/s C 34 000 m/s

HET

D.3400 m/s

oE o l-b

m

PageT of7(wra oi rety

TRIIONG THPT CII{_, VEN DA,I HqC SU PI{AM IIA NQI

pap AN ng THr u'xnl EAr lrqc rvlOn+ vai LV

lan 5 (ngiy 22 - s- 2011)

r6t

162

163

164

161

162

r63

t64 E

Ngdy 2A -s -201L ruiov var rf