1. 127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 2012

2. WWW.VIETMATHS.COMNGUYEN THANH HAl 20DE THI TRAc NGHIEMTUYEN SINH V Ao D~I H h~lt khitL nang luqng lien- (jlrung phangk~t, nllng Itrqng lien k~t rieng- Giron]; du- Nang1L19nghat nhanChi chu: Chi, :I() trong d4u n~(!(k don Iii .d lu"t,lnl-: (d!( kiJn) ((1u hili r,.6c n~him CU(/ IU711-: hd". po ca Ink d~ Ihi mic IIghi~m ru,dn sinhvimf)(_li hl,iC, CU(lllJlIg 1/(1", 20(J7 II/(~n Vt_ir If(d{( Io.ien) do U/) CD & f)T dinM M: (liin~ rrfn TNCNst"/7(4033) III-:UY 71/1 2()()?,127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 20125 6. WWW.VIETMATHS.COM[~]l. Khi ehll dit:m dao A1E>i~u nao ulrdi day 1ft dung khi so sanh cd nang Clia hui LOIl lilL-? A. Cu nang cli:.t hai con l:1e hllng nhau, B. Cli nangdIU cun Idc th(r nh:!t IOn hon. C. C,1 nrlllg cua con lie thir hai )dn hon. D. Chua till dn dr phongl1;,lianh )~I: 1 A. k= 1. B. k = -.1.C. k=-. 3 29. M(lt thau kinh ph:1n ki eli lieu cu f = -K(km. [)~l v~t AB tnrdc thau kinh thi cho iinh n5m (~ V! lri ciich th.fu kinh Im)t kho .l.ng 4(km. Vi tri cua v~t ciich th .l.ll kinh m(lt khoang la: A. J= 40cm.B. J = 80cm. C. J::: 20cm. D. d = 160cm. 30. D{)i vdi may anh. thi: A. V~l kinh co th~ lu mOt thau kinh hOi tv ho;).c thau kinh phan kl. B. Anh thu I.ltn.1c tren phimla anh that, nhi) hon V~l. C. Thoi gian m(~ dra s~p dog )~111 anh chup cang 10 net.thi D. Khoiing each nr V~lkinh l.1ell phim Ifl ct) dinh. 31. Khi quan sat m(ll V~l nh() hhng kinh hlp. tac dung chinh cua kinh hlp Iii: A. lam v~t to len.127.0.0.1 downloaded 60735.pdf at Sat Aug 25 11:43:51 ICT 201210 11. WWW.VIETMATHS.COMH. lam giam khoiing each tit vGl Jen mil.C. tang unfllg kha nang nhin 4:lla md 1.D. lam tang g6(. trong anh.32. Dung may unh ma v~t kinh la m(H (hall kinh h()i tu c() tiell qf f Ikm