Dao động và sóng cơ

  DAO ĐỘNG CƠ I. Đi cương v dao đng điu ha: Câu 1: !"#$%$#&' A. () * "+,"-.)/012" $% B. "3456"7$8951:,-*;<=>8? @A9BC*>D?DA"2E;"$#& C. F4G$#&,H/II$B D. J/KG$#&,H4$B Câu 2:J/;$%"L A. M01)"%7NO6*IB B. M01 * G 7-P"+," C. M01QR *  G7-P"+," D. >DF#S Câu 3: !"S/#$#GOR O' A. MR ON6*I!2D7E TDET U B. > C. MR ON6*I!2D7E TDETU D. MR ON6*I4D7ET  ETU Câu 4:#&:,-*;L<=>8?@A9BG$8?@A9$V <6L A. F4$B B. J/K$B C. C%E$B D. C*G$1 OB Câu 5:C* $#WD)"-P$-:!*6T, 8 9 o t ω ϕ π + = ' A. T7EU B. 7EU C. T"U D. XE7EB Câu 6:YR O/E"-PO=$#&*4W$ZOD%E[\]BS=D R O^6*I!2_%5-:$-GN`BF aG751 " A. <=b B. <=8b@b9 C. <=8b@bc9 D. <=Z8b@b9 Câu 7:JE1""S7N6*I!25#!O; aG$#& $L A. <=>8?9B B. <=>8?π9B C. <=>8?πc9 D. <=>8?@πc9B Câu 8:Y7$#7E$,-*;=?>8?@πc9BC1 O%" "SL A. J"_N6*I!25#$- B. J"_a46*I4 C. J"_N6*I!2-P#$- D. J"_7E":R Câu 9:JE1""S7^6*I47 5#$-; a$ #&$B A. <=>8? π 9B B. <=>8?@ d  π 9B C. <=>? D. <=>8?@  π 9B Câu 10:Y7$#&5,-BMN6*I!277E"b8Oc9D &/^6*I4DEG7"eOc  BC1 O=ce89/ f"S_%$7N6 *I!25#89GN`BJ=π  =Oc  B-*;$G7"L A.<=[8Zbb9O B. <=[8Zb@bc9O C.<=[8Zbπc9O D.<=[8Zb9O Câu 11:YR O$#&5,-Wa:,-*;<=>8?gb9OBC1 R Of6*IR,R36*R"D[Bh/01=Di[/ f"S_% $R O^6*I"L A.  A x = O B. x = O C. d  A x = O D.   A x = O Câu 12:YR O$#&:,-*;<=>8Zb@bc9OBh/01=  Z  / f"S_%$R O^6*I"L A.  A x = O B.  A x = − O C. d  A x = O D.   A x = O Lª V¨n Hïng – Trêng THPT Chuyªn Lª Quý §«n Qu¶ng TrÞ    Câu 13:Y7$#:,-;<=>B8?πc98O9Bj1 O=ci/ f"S_ %"_N6*I<=>"%aRBC%E$G"_" A. *$c B. π*$c C. Z*$c D. Zπ*$c Câu 14:Y7$#:,-;<=>B8?πc98O9Bj1 O=ci/ f"S_ %"_N6*I<=>"%aRBM7E$G"_B A. =>8Oc9 B. =π>8Oc9 C. =π>8Oc9 D. =π>8Oc9 Câu 15:BY7$#5,-*;<=Z8b9OBC1 O7N6*I"<= O5#$-"%a"L A. =cd89 B. =cd89 C. =[cd89 D. =kcd89 Câu 16:BY7$#5,-*;L<=d8[bbcd98O9BC*!%47N6 *I!2-POR"%' A. Z"% B. ["% C. i"% D. k"% Câu 17:l7$#:4>Bm":7E2O)7ET/"$G 72L A. >c B. ±>c C. ±>c D. > Câu 18:O$#,-*; < >  ω = BXE1"L A. SR O"<=@> B. SR ON6*I!25# $- C. SR O"<=>B D. SR ON6*I!25#!O Câu 19:Y7$#$5*Hn<:,-*;L<=i8Zbbcd9OBop-17 -Pf1 O  =c8931 O  =cd89"L A. =dZO B. =dO C. =kO D. =deO Câu 20:mq6 $r"<GO$#&51-L C1 O d Z T t = 77EE"L A. =ω>U=B B. =U=ω  >B C. =ω>U=B D. =U=B Câu 21:YR O$#&T$*iBJE1"SR O ^6*I4<=>BC1_RR ON6*I" d  A x = O/ f"S_%$"L A.  B. D[ C. D[ D. Dk[ Câu 22:YR O$#&*4-1o=OD17f3o"D[BXsD t"%"-P"* OGnnoBl7E*;GR O*4st"L A. DeOc B. DOc C. DZOc D. DiOc Câu 23:Y7u$#$5*Hn<::,-*;<=[8π@A9OBC1  O  7""<  =[O5#$-B<  G71 O  =  @dc89"L A.<  =iDkO B. <  =iDkO C.<  =O D.<  =iDkO Câu 24:Y7$#&5,-*4Y(=eOBX0v1 O=7^6*I <=>31 O= d π 897-PNp-1$iOB -*;$G7 A. <=e8 @ πc 9 OB B. <=Z89OB C. <  =  e8   πc9 OB D. <=Z[OB Câu 25:YR O$#&:,-*;<=>8bgbcd9OBC1R ON 6*I"<=>c"%a/ f"S_%$"L A. Dk[ B. D[ C.  D. D[ Câu 26:C*$#G"_"&<2O77E":R/L A. M7N6 *I!2B B. M7^6*I4 C. M7N6 *I">c D. M7N6 *I">c Câu 27:YR O$#:,-*;"L ( ) ix t cm π = BC1 O=D[DR O 7E*7E-P4$-:!' A. =dO B. =iO C. =dπOc D. =iπOcB Lª V¨n Hïng – Trêng THPT Chuyªn Lª Quý §«n Qu¶ng TrÞ    Câu 28:Y7$#&/;"CB(3E1="S7N6*I!2D; *v/;%4D7EG72/w^1 OB >B=Cc FB=CcZ JB=Cci B=Cce Câu 29:Một chất điểm thực hiện dao động điều hoà với chu kỳ T = 3,14s và biên độ A = 1m. Khi chất điểm đi qua vị trí cân bằng thì vận tốc của nó bằng A. 1(m/s) B. (2m/s) C. (0,5m/s) D. (3m/s) Câu 30:(3E*V:6*I!2;^1 OtD aN)4A 8< O 9D "xD7E%E?GR O$#" A.     v A x = + ω B.     A x v = +ω C.     x A v = + ω D.     A v x = +ω Câu 31:Trong dao động điều hòa, vận tốc tức thời biến đổi A. cùng pha với li độ B. ngược pha với li độ C. Nhanh pha π/2 so với li độ D. sớm pha π/4 so với li độ Câu 32:YR O/E"-PO=D/*5^%O"&<a/=Z8(cO9D$#& N6*I!bằngBCI/K$B A. DiZ B. DdZ C. Di D. D[k Câu 33:C*$#":EG$ A. Cx/7Ex B. Cx  /  7  E 0O C. Mwy D. Cx0OK 7 E% G$ Câu 34:Y7$#&B/N6*I!2L A. l7ETETB B. l7ETE2B C. l7E2E2B D. l7E2ETB Câu 35:Y7$#&BJ!/W6"L A. M7 f6*I!2*4;57E5E"w-P#B B. Tq,H"w-:#6*I!2z":"B C. XEG7"w-:#6*I!2z":"B D. M7 f4#6*I!2;57E v r 5E "w-P#  Câu 36:J!SL A. l7EEG7$#&3456"7$89E:1B B. M7$#&^6*I4;xG7T&3x*4B C. l57E"wy#/7$#&N6*I!2":TB D. M7$#&N6*I!2;7EG7*4&E*6TB Câu 37:J!L A. M7N6*I!2"Tq,H*6T;"S7EG7"":RB B. Tq,H$H"47$#&34#&V%E:B C. Tq,H$H"47$#&"w-:#6*I!2B D. \57EEG7$#&V#/7 f4#6*I !2B Câu 38: Câu 39:YE"4)"<U7E%E?GO$#&/3xx G2"L A. ?=<c B. =±?B< C. ?=<B D. <=±B? Câu 40:J!saiL A. C%E?""-P*<6/K%E$B B. %A/w,0"OTO"O"-P*S,<6*$ %G7B C. C%E${G"_"&<z": k z"6: m D. J/KC")/012D*$"7,"-.B Câu 41:C*$#&GO7N6*I!2D, !SE:"T q,H$H"47' A. C|"7:/0f736*I!2-:#,I6*I!2B Lª V¨n Hïng – Trêng THPT Chuyªn Lª Quý §«n Qu¶ng TrÞ d   B. C|"6:/0f736*I!2-:*<6*I!2 C. C|"7:y$pG"&<-:#6*I!2B D. C|"7:/0f736*I!2-:*<6*I!2 Câu 42:J/IIO"_"&<*5Wa2L/QN0%<E$-:"*/u 6*I!25,-WaO<*qw*$BJE6*I! 2DE1""SwN0%D#$--:"4;,%AG,-*; *6"L A.  π ϕ = − B.  ϕ = C.  π ϕ = D. ϕ π = Câu 43:Y"_"&<a"/*5WaD%*4E6D%$-:_7BXpG"& </7^6*I!2"}lBJ"_$#&5,-Wa:4"A (A > }l). TqG"&<":uR*N*;$" A. F = kA B. F = 0 C. F = k}l D. F = k(A - }l) Câu 44:Y"_"&<qO7/E"-PO"&<a/D$#&B(3xa/ "4"%0O/E"-POe"%;%E$G7~B A. xZ"% B. 0O"% C. x"% D. 0OZ"% Câu 45:Y7u;%/E"-PZ-P*5"&<•ai(cOBl7$#& 5,-Wa:4OBl7EG7/N6*I!2":" A. Z8Oc9 B. 8Oc9 C. 8Oc9 D. D8Oc9 Câu 46:Y"_"&<*5WaBM7+!2"&<p*O∆"  BJ/K$ #G"_"&<"L A.  k T m π = B.   l T g π ∆ = C.   g T l π = ∆ D.  g T l π = Câu 47:J"_"&<*5WaBF%"_a46*I!2-1*#7E   -:-P#$-B%G,-*;G$"L A. ϕ= B. ϕ=π C. ϕ=π/2 D. ϕ=π/2 Câu 48:J"_"&<*5WaqO7+O"&<a/BF%7++^6*I"&< /w3$*q0•BXE1""S07DE"6*I!2#$--:<EB F4,%G,-*;$"L A. >=∆"  Dϕ=πc B. >=Oc/Dϕ=πc C. >=Oc/Dϕ=πc D. >=Oc/Dϕ=π Câu 49:J"_"&<qO7+/E"-PO=/D/=(cOBMII7$# 5,-WaBM7<=[OD;7EG7"=[OBF4$G7"L A. O B. O C. [O D. iO Câu 50:Con Câu 51:Y"_"&<a/*5N0+/E"-P"OB\$:4>/;CB X*6TG"Tq$HN0+L A.       += > / O /t O< B.       += > / O /t O< C.       −= > / O /t O< D.       += > / O /t O< Câu 52:J"_"&<*5WaD/7+!2"&<p*OBF%)7^6*I"&< p*O*q0•Bh"!;7+N6*I"&</w3$"%aRBR=Oc  L A. πc B. 2πc[89 C. πc[89 D. πcZ89 Câu 53:J"_"&<*5WaD/7+!2"&<p*OBF%)7^6*I"&< p*O*q0•BR=Oc  Bl7ETG$"L A. Oc B. Oc C. Oc D. πOc Câu 54:J"_"&<*5Wa$#:7ET2[Oc*,Of6*I "&<#$T4"  =dO36*I"&<#"  BCI#$"  A. ZO B. diO C. d[O D. [O Câu 55:J"_"&<*5WaT$*Bo` G"_2 OBl7ETG$"L A. πOc B. π Oc C. πOc D. [πOc Câu 56:J"_"&<*5Wa$#:/KC=πc[89Bo` G"_ 2dOBF3#$T4G"&<"  =[OR=Oc  BJ#G"&<34*,O ' A. CfZ[O3iO B. CfiO3k[O C. CfZ[O3k[O D. Cfd[O3k[O Lª V¨n Hïng – Trêng THPT Chuyªn Lª Quý §«n Qu¶ng TrÞ Z   Câu 57:Y"_"&<$#:%E{=Z\]BM01)"%"43,x T"L A. D[89 B. B[89 C. D[89 D. Di[89 Câu 58:Y"_"&<$#*89"_T-P[$BM01 )"%"43,x23x"L A. D89 B. D89 C. DZ89 D. D[89 Câu 59:Y"&</E"-P/w/ -P*5*4*%V:O7u_^%$-:GBF %7-P)^6*IF"&</w6QpBh7-P0fFD$"4<E: 6*IR,RFOBl7ETG$"L A. [Oc B. Oc C. k[Oc D. [OOc Câu 60:Y"_"&<$#&5,-Wa:/;C=πcZ89D7ET= ZOcBME"-PG7O=D[/BR=Oc  Tq":R$H"47"B A. [( B. i( C. iDi( D. Di( Câu 61:Y"_"&<*4O+,W/wOqO"&<a/D7+/E"-POB F%7a46*I!2-1*#77E  -:5#$-G*H BF4,%G$"%"-P"L A. >=  Dϕ= B. >=  Dϕ=πc C. >=  Dϕ= D. >=  Dϕ=π/2 Câu 62:Y"_"&<*4O+,W/wOqO"&<a/D7+/E"-POB F%7a46*I!2-1*#77E  -:5#!OG*H BF4,%G$"%"-P"L A. >=  Dϕ=πc B. >=  Dϕ=π C. >=  Dϕ= D. >=  Dϕ=π/2 Câu 63:J"_"&<*5WaT$#U#$":RDQRG"&<""  D"  B F4$G"_"L A. >=8"  @"  9c B. >=8"  "  9c C. >=8"  @"  9 D. >=8"  "  9 Câu 64:Y"_"&<*4O+,W/wOqO"&<a/D7+/E"-POB F%7-P)a4^6*I"&<p<=<  €0•7$BF4,% G$"%"-P"L A. >=<  Dϕ= B. >=<  Dϕ=π C. >=<  Dϕ=πc D. >=<  Dϕ=πc Câu 65:Y"_"&<qOO"&<a/=(cO7/E"-PO=[D$# :4A =iOBJE1="S7N6*I!2Bop-17-P*89 %4"L A. O B. ZO C. iO D. OB Câu 66:Y"_"&<*5WaBCf6*I!2D!N0%"45,-Wa36*I O"&</w63$*qw*$BJE6*I!2DE1""S wN0%D#$--:"4;,%AG,-*;*6"L A.  π B.  C.  π − D. π Câu 67:J/IIO"_"&<*5Wa2L/QN0%<E$-:"*/u 6*I!25,-WO<*qw*$BJE6*I!2DE 1""SwN0%D#$--:<E;,%A*6"L A.  π ϕ = − B.  ϕ = C.  π ϕ = D. ϕ π = Câu 68:Y"_"&<*5WaBCf6*I!2-1R,N0%O7E% 5,-Wa-:<EBJE6*I!2DE1""S""SN0%_ % D#$--:"4;,%A*6"L A.  π ϕ = − B.  ϕ = C.  π ϕ = D. ϕ π = Câu 69:\"_"&<Va/BF3/K$C  =C  BME"-PG"_"4 :5waL A. O  =O  B. O  =O  C.   m m = D.    m m = Câu 70:o0%O_"&<a/;$:/KCB\u,0_"&<*4 4,%2 /*5N0%O•,%D;/K$*6 ‚  T T = L A. J_"Oe,%B B. J_"O,%B C. J_"Oi,%B D. J_"OZ,%B Lª V¨n Hïng – Trêng THPT Chuyªn Lª Quý §«n Qu¶ng TrÞ [   Câu 71:(3a/G"&</E"-POG7*5%"&<#xR,w;/K$G 7~y-3' A. Cx"% B. X0O"% C. Mwy D. Cx"% Câu 72:Y"_"&<*5WaBCf6*I!2-1R,N0%O7E% 5,-Wa-:<EBJE6*I!2DE1""SN0%_%  D#$--:<E;,%A*6"L A.   π B.  C.  π − D. π Câu 73:J/IIO"_"&<*5Wa2LCf6*I!2D!N0%"4 5,-WaO<*qw*$BJE6*I!2DE1 ""SwN0%D#$--:<E;,%A*6"L A.  π B.  C.  π − D. π Câu 74:M_N0%/E"-PO  "&<;$:/KC  BM_N0%/E"-PO  "&<*4;$:/KC  B(3_q10N0%"&<;$: /KC*6"L A. B.        T T T = + C. D. Câu 75:Y"_"&<qO"&<a(cO4/E"-PD/$#&BC 1 OD7EEG4"%"-P"Oc d OcBF4$G4" A. ZOB B. iOB C. 8OB D. ZdOB Câu 76:Y"_"&<*5WaBMII"_$#&5,-WaB J/;4$G"_"%"-P"DZeOBJ*H<ƒ<Wa#$--: <EDE6*I!2DE1=/7N6*I!25#$-BRE *T$=Oc  π  =BC1_R/ f/=3/"TqG"&<":T  " >Bkcd89 FBZc[89 JBdc89 Bcd89 Câu 77:Y"_"&<*5Wa-P/II$#&BC1N0%f6*I R36*IR,R"D[89zE)":G"TqG"&<*"TGN0%/ ^6*IR,R"kick[BJE6*I!2D#$--:"4DE1"SN0 %^6*I4$-B-*;$G"L A.  d8 98 9 d x t cm π π = − B. Z d8 98 9 d x t cm π π = − C. Z d8 98 9 d x t cm π = D.  d8 98 9 d x t cm π = Câu 78:YR O$#&5,-*;<=d8[bbcd98<I2OI2 !9BC*O!%4f1 O=DR ON6*I"<=@O A. Z"%B B. k"%B C. ["%B D. i"%B Câu 79:Y"_"&<a/=(cO/E"-P/w/ D-P*5WaDO% -P)E6D%&"_N0%u/E"-PO=[BMQ7O<E$-:5,- Wa36*I"&<$p*-PkD[OD*qw•BJE^6*I!2G7D*H WaD#$--:"4DE1""S07BJ=Oc  B-*;$G N0%"L A. <=[8bc9O B. <=kD[8bc9O C. <=[8@bc9O D. <=kD[8@bc9O Câu 80:Y"&<*5WaD%$-:*5O7O  =;#$G"&</!2"ZOB C*53,O  =O  2OP$!O0;#$G"&<"eOBJ#$T4 a/G"&<*6"L A."  =O„/=(cO B. "  =O„/=(cO C."  =O„/=[(cO D."  =O„/=[(cO Câu 81:Y"_"&<$#&5,-Wa:,-*;<=8?bcd9OB C*N*;$DzE)":RuRG"TqG"&<"BJ=π  =Oc  B J/K$G"_"L A. C=Db89 B. C=Db89 C. C=Dib89 D. C=DZb89 Câu 82:Y"_"&<$5,-WaBC*N*;$D"&<#$3 4fZeO3[eO"TqT*6"(BME"-PGN0%"ZBJE1 Lª V¨n Hïng – Trêng THPT Chuyªn Lª Quý §«n Qu¶ng TrÞ i   ""SN0%N6*I!25#!OGN`BJ=π  =Oc B -*;$ G7"L A.<=[8[bdbc9O B. <=[8[b@bc9O C.<=[8[b9O D.<=[8[bπc9O Câu 83:J"_"&<$#&:,-*;L<=>8b@A9OB l1 O=DN0%N6*I!25#$-B l1 O=  T N0%"<=[OB -*;$%GGN0%"L A.<=8b9O B. <=8b@b9O C.<=[8b@bc9O D.<=[8bb9O Câu 84:&<#$T4""  =[O*5O OE6D%$-:O7+BCf6 *I!2!7"45,-Wa3"S#$G"&<"dO*qw*Bo0%$ #&:/KC=DieDE6*I!2D#$--:<EBC1  O= d π 89/ f"S_%$7N6*I!25#$-B-*;$G 7"L A.<=Z8@bc9O B. <=Z8πc9O C.<=Z8bci9O D.<=Z8[bci9O Câu 85:BJ"_"&<$#&:,-*;<=>8b@A9OBh/_%$ -PD[DN0%^<= [  OD5#!OGN`7E*6   π  OcB -*;$%GGN0%"L A.<=8b@[bcZ9O B. <=8b[bcZ9O C.<=8b@bcZ9O D.<=8bbcZ9O Câu 86:Y"&</E"-P/w/ DO%_ OYE6D%&"_O7uO =/Bl7O$#5,-:,-*;L<=>8gb9OBF3 OYz 6-P"T/QE"(B\uL "&</w6*/u OY;4$,02 4' A. >≤O B. >≥ZO C. >≥O D. >≤ZO Câu 87:BY"_"&<$5,-Wa:,-*;"L<=i  8[bbcZ9OB ME"-PG7+O=BJ#8@9-:<EJ-1#G"TO"&<$H  O*5"_/7^6*IR"L A.t= B. t=D(-:"4 C.t=dD(-:"4 D.t=D(-:<E Câu 88:BY"_"&<$#5,-Wa:,-*;<=Z8[bdbcZ9OB CzE)#$":RuRG"&<"kc[BR=π 2 Oc  BJ#$T4G"&<"L A. "  =ZO B. "  =eO C. "  =O D. "  =O Câu 89:o0%O_"&<a/  ;$:/KC  B(3_O"&<a/  ;$:/KC  B(3_N0%O"&<*4Q,E3,:;$ :/KC*6"L >B FB        T T T = + JB B Câu 90:m#, !"SE:$G"_"&<*5Wa' A. F4$"*6TG"z,H#/% B. C17 f6*IR,R36*IR2S/K$B C. #&" *$$HGO"Tz":4B D. C%E$,H3E4z"6:/K$B II. Cơ năng dao đng điu hoà: Câu 91:JxGO7$#& A. xR,w/4$G7xR,wB B. 34%51:/K2/K$G7B C. 34%51:/K2Ov/K$G7B D. 2xG7/7:6*I!2B Câu 92:(x"-P$GO"_"&<"s=eO…BJ"_T-P[$*1 BME"-PG"_"BF4$G"_"L Lª V¨n Hïng – Trêng THPT Chuyªn Lª Quý §«n Qu¶ng TrÞ k   A. ZO B. cπO C. ZcπO D. O Câu 93:Y7uT$#&5,-*;<=8Zb98O9:I2!B mxG734:/;2 A. D[ B. D[ C. D[ D. D Câu 94:Y"_"&<$#&:,-*;<=>B8?9Bh1=πc?;L A. m  x  2 /wD3xT B. C3  x  2 /wD    x  T  C. mx23 x D. mx2 "%3x Câu 95:J/;3y3x$GO"_"&<2L A. †/;$ B.   "%    /;  $  C. 2    /;  $  D. Mw  <  6 -P Câu 96:Cx7ETG$"4R,BC;x"-P$xR,L A. Z"% B. "% C. "% D. Mwx Câu 97:Y"_"&<$#&:,-*;<=>B8?πc9Bh1=πcZ?;L A. m  x  2 /wD3xT B. C3  x  2 /wD    x  T  C. mx23 x D. mx2 "%3x Câu 98:Y"_"&<2O$#&:,-*;<=>B8?9Bh1=e πc?B l7+$IO7/EB A. J  x  $   G"_/w y B. J  x  $   G"_xR,w C. J  x  $   G    "_  0O  O vB D. J  x  $   G    "_  x  R, EB Câu 99:Y7$#5,-*;<=>B8?9BM3"7!không đúngL A. -*;7E=?>B8?9 B. C3x$     b s = O? >  8?@ 9   C. mxG7    $ b s = O? >  8?@ 9   D. Jx$    s= O? >  Câu 100:J!!"sai /#x"-P$ A. Jx G$   z  "  :  ; ,-4$ B. C* EN*; $xG -P0 C. J  x    ,% G$    s= O? >  D. C*  N  *;  $   T      N")xG $wG"T O Câu 101:MO$/K$0Od"%40O"%;|Ex"-PG"_ :"S% A. cZ B. dc C. Zc D. cd Câu 102:m#!" sai /#x"-P*$#&L A. M7N6*I!2;xG":RB B. MxGx"44"%;3xG0OR4"%-P"B C. M7^6*I4;3xG":RB D. M7 #6*I!2;3xG0O&xGx"4B Câu 103:m#!"S/#T3yx"-PG"_"&<L A. X0OcZ"%/%E?x"4d"%4>0O"%B B. Cxic"%/%E?x["%4>0Od"%B C. X0OZ"%/%E${x"%4>0Od"%B D. Cxi"%/%E${4>x"4"%B Câu 104:(x"-PG$#&3y-3*N*;$' A. JxG"O2Ez":4$B B. C3xG$0O/xx"4-P"B C. (x"-PG-P0LxG0O4;xxR4B D. (x"-PO7-Pf4*O•/KS2,%xG60O$ w _"TOB Câu 105:(x"-PG"_"&<_:N0+O;|":;,-L Lª V¨n Hïng – Trêng THPT Chuyªn Lª Quý §«n Qu¶ng TrÞ e   A. C%E?4$B B. C%E?/E"-POB C. F4$a"&<B D. F4$/E"-POB Câu 106:m#!"/#x"-P*$#G"_"&<L A. mx3x34#51:%E2:%E$B B. mx3x34C‡ˆ(\n‰(51:/K2O)G/K$ B C. Jxz":;,-4$aG"&<B D. mxT23xT2:xB Câu 107:Cơ năng của một chất điểm dao động điều hoà tỷ lệ thuận với A. bình phương biên độ dao động B. li độ của dao động C. biên độ dao động D. chu kỳ dao động. Câu 108:J"_"&<$#&5,-:4"A 8< O 9BG7/ xG723xG"&<" A.  A x = ± B.   A x = ± C. Z A x = ± D.  Z A x = ± Câu 109:\"_"&<T$#4"%"-P">  >  D:>  €>  Bm#$-: !"S/xG"_' A. J-Gxa /3 "7 B. J x G"_ a": C. Jx G  "_ aR": D. JxG "_2 Câu 110:m#!"sai /#x"-P*$#G"_"&<' A. JxG"_z "  :  ;  ,- G4$ B. J x "O O E5 1  :%E2%E $G"_ C. JT N ")x 3x D. Jxz":; ,-G%E$  Câu 111:C*$#/7f6*I!2*6*I4L A. mx xD 3 x0O B. mx0OD3 xx C. m  x    3 x/wy D. Jxx Câu 112:Y$#,-*; Z8Z 9x t π = 8O9BC*/01f"S  =D[3  =Di[L A. m  x    3x B. C3x  x C. m  x    3 x#x D. m  x    3 x#0 Câu 113:Y7$#:,-;<=>B8?πc9BM"_N6*I<=>B A. m  x  2  3 x$ B. mx2†3 x$ C. m  x  2  cd 3x$ D. mx2Š3 x$ Câu 114:Y7$#:,-;<=>B8?πc9BC*/01/ f"S_% 3/"_N6*I<=>B A. m  x    3x$  B. C3  x  $     x C. m  x    3 x$/w y D. Mw<6-P x    3  x   -P" III. Con lắc đơn: Câu 115:Y"_-P*5^*%OOBMOa4D"_$#& :/;CBMO"4WaD7O$%#:E":2OvE* *-1+O;"_$#&:/;Cƒ2 A. Cƒ=C B. Cƒ=Cc C. Cƒ=C D. Cƒ=Cc Câu 116: !"/#$G"_8uN"T0GOw*-19' >Bl:$u;$G"_"$#&B FBM7+^6*I4DxG"_23xGB JBJ G"_f6*I4#6*I!2"$%B BM7+N6*I!2D;*"T$H"4!2:"TxG$!B Câu 117:Y"_#$"=ODN0+/E"-PO=D"_$6*I E**-1=Dek8Oc  9=π  8Oc  9BJ/;$G"_"L A. C= B. C= C. C=d D. C=D[ Câu 118:Y"_#$"=ODN0+/E"-PO=D"_$6*I E**-1=Dek8Oc  9=π  8Oc  9BCx/E"-P"_"4R,w/;$G"_ Lª V¨n Hïng – Trêng THPT Chuyªn Lª Quý §«n Qu¶ng TrÞ    A. CxR,w B. X0Oc C. Mwy D. Cx Câu 119:Y"_#$"=ODN0+/E"-PO=D"_$6*I E**-1=Dek8Oc  9=π  8Oc  9BCx#$"_"4"%BJ/;$G"_B A. Cx"% B. CxZ"% C. X0O"% D. Cx Câu 120:Y"_#$"$#&:/;CBMN6*I!2$!*5 "_-:,066*I O*5"cdB"_3,H$BJ/;$G "_L A. :C B. (uC C. F2C D. Mw      -P :C Câu 121:Y"_#$"$#&:/;CBMN6*I!2$!*5 "_-:,066*I O*5"cB"_3,H$BJ/;$G "_L A. Cc B. Cc C. C8@9c D. CB Câu 122:J"_#$"  D$:/;C  =Dd89D"_#$"  D$: /;C  =DZ89BJ/K$G"_#$"="  @"  "L A. C=Dk B. C=D C. C=D[ D. C=D[ Câu 123:Y"_$:/;C=O+RD-"_"4*RD(\‹ŒCm•M\Ž(X m•‹BJ/K$G"_y3' A. Cx B. X0O C. Mwy D. Cx  0O  V    Câu 124:Y"_$:/;C=O+RDOw*-1x"4BJ/;$ G"_y3'B A. Cx B. X0O C. Mwy D. Cx  0O  V    Câu 125:Y"_$:/;C=O+RD-"_"4Y+C*xE* *-12ciE**-1^O+RBJ/;$G"_L A. Cxi"% B. X0Oi"% C. Mwy D. Cx"% Câu 126:M OqqN0"_f<I"4TDX‹•(\‹ŒCm•M\Ž(Xm•‹B A. mq  q  ~   ( B. mqq~7O  C. mqq‘- . D. Mw<6-P Câu 127:Y"_*5*OBJ/K$G"_L A. Cx3O "4$% B. Cx3O <E$% C. X0O 3 O "47O$% D. X0O 3 O <E$% Câu 128:Y"_OIN$-$#&:/KCBm-"_O *-1#-1a-:Wa<E$-:BJ/;$G"_L A. Cx B. X0O C. Mwy D. CxD0OV     ":  G   IB Câu 129:Jx$G"_L A. Cz  "  7  :  ; ,-4 B. Cz  "  7  :  /E "-PG7 C. Cz"6:; ,-4$B D. >DFSB Câu 130:\"_ON0+2•DON0+2;/I-:EBM/w "T0"_/K4$EBM+/w/I"_~_$% ' A. J"_; B. J"_• C. Mw<6-P D. CV      Ow *-1/w/IB Câu 131:\"_V$V4$B(3O  =O  ;L A. C  =C  Ds  €s  B. C  =C  cDs  =s  C. C  =C  Ds  =s  D. C  =C  Ds  ’s  Câu 132:(-1-OqqN0"_f*R"4O+*xO/w#z"BC*5qq *4O+*x;1*RTNO&"4'J3E*T$*4O+*xu *4*Ri"%B A. e1Zk,S!B B. 1 C. Z1B D. 1Zk,S[!B Câu 133:\"_#$"%"-P""  "  BJ/K$GS"C  C   E**-1"BJ."_#$"="  @"  $:/KC*62L Lª V¨n Hïng – Trêng THPT Chuyªn Lª Quý §«n Qu¶ng TrÞ  [...]... -2010 12 A Biờn dao ng tng hp: A = 8cm B Tn s dao ng tng hp: = 2rad / s C Pha ban u ca dao ng tng hp: = 4 V D Phng trỡnh Dao ng v súng c hc dao ng tng hp: x = 8 sin 2t + ( cm ) 4 Dao ụng tt dn, dao ụng cng bc: Cõu 146: Chn cõu ỳng trong cỏc cõu sau õy : A Tn s ca ngoi lc tỏc dng lờn h dao ng luụn bng tn s dao ng riờng B Hin tng cng hng luụn cú hi vỡ nú gõy ra s nt, góy khi vt b dao ng di tỏc... mi chu k dao ng C Khi cú cng hng, biờn dao ng ln nht v vt dao ng vi tn s bng tn s ca ngoi lc D Dao ng cng bc luụn cú tớnh iu ho Cõu 151:Trong dao ng ca con lc lũ xo, nhn xột no sau õy l sai? A Biờn dao ng cng bc ch ph C Tn s dao ng cng bc bng tn s thuc vo biờn ca ngoi lc tun ca ngoi lc tun hon hon D Lc cn ca mụi trng l nguyờn nhõn B Tn s dao ng riờng ch ph thuc vo lm cho dao ng c tớnh ca h dao ng... 149:Nhn nh no sau õy sai khi núi v dao ng c hc tt dn? A Trong dao ng tt dn, c nng gim dn theo thi gian B Lc ma sỏt cng ln thỡ dao ng tt cng nhanh C Dao ng tt dn l dao ng cú biờn gim dn theo thi gian D Dao ng tt dn cú ng nng gim dn cũn th nng bin thiờn iu hũa Cõu 150:Chn cõu sai trong cỏc cõu sau : A Trong thc t, mi dao ng u l dao ng tt dn do cú ma sỏt B Nng lng cung cp cho h dao ng cng bc bng ỳng nng lng... dng ca ngoi lc C Trong h t dao ng, dao ng ca vt c duy trỡ nh ngoi lc tun hon tỏc dng vo vt D Dao ng tt dn khụng cú tớnh iu hũa, ph thuc vo ma sỏt Cõu 147:Khi chiu di dõy treo gim 1/4 thỡ chu k con lc n thay i nh th no : A B C D Cõu 148: Khi xy ra hin tng cng hng c thỡ vt tip tc dao ng A vi tn s bng tn s dao ng riờng B vi tn s nh hn tn s dao ng riờng C vi tn s ln hn tn s dao ng riờng D m khụng chu ngoi... ngc pha nhau nh hỡnh v iu no sau õy l ỳng khi núi v hai dao ng ny : A Biờn dao ng tng hp bng 2A B lch pha gia hai dao ng l 2 C Cựng i qua v trớ cõn bng theo mt hng D lch pha gia hai dao ng l (2k + 1) Cõu 140:Mt vt thc hin ng thi hai dao ng iu hũa cựng phng cú cỏc phng trỡnh dao ng l x1 = 5cos(10 t )(cm) v x2 = 5cos(10 t )(cm) Phng trỡnh dao ng tng hp 6 2 ca vt l A x = 5 3 cos(10 t x = 5 3 cos(10... Tng 20% D Tng 9,54% IV Tng hp dao ụng: Cõu 137:Cho hai dao ng iu ho cựng phng, cựng tn s, cựng biờn : x 1 = Asin(t + 1), x2 = Asin(t + 1) Biờn v pha ban u ca dao ng tng hp l : A C B D Cõu 138:Cho hai dao ng iu hũa cựng phng, cựng tn s, cựng biờn v cú cỏc pha ban u l /3 v -/6 Pha ban u ca dao ng tng hp hai dao ng trờn bng A /12 B /6 C - /2 D /4 Cõu 139: th biu din hai dao ng iu hũa cựng phng, cựng... 4cos(t )cm) Dao ng tng hp ca hai dao ng ny cú biờn l A 4cm B 2cm C 2cm D 2cm Cõu 143:Biờn d dao ng tng hp ca hai dao ng iu hũa cựng phng, cựng tn s, cựng biờn A, cú lch pha = /3 l : A B C D Cõu 144:Biờn ca dao ng tng hp cú giỏ tr cc i khi lch pha ca hai dao ng thnh phn cú giỏ tr D b hoc c A 1 2 = ( 2k + 1) C 2 1 = 2k B 1 2 = 2k Cõu 145:Mt vt thc hin ng thi hai dao ng cú phng trỡnh: x 1 = 4... súng trờn phng truyn súng dao ng ngc pha nhau D Nhng im cỏch nhau mt s l ln na bc súng trờn phng truyn súng dao ng ngc pha Cõu 3: Phỏt biu no di õy l ỳng: A Vn tc truyn nng lng dao ng l vn tc ca C Chu k dao ng chung ca cỏc phn t vt cht súng ni cú súng truyn qua l chu kỡ ca súng B Vn tc dao ng ca cỏc phn t vt cht l vn D Biờn ca súng l mt hng s tc ca súng Cõu 4: Mt ngun phỏt súng dao ng theo phng trỡnh... truyn súng Cỏc im thuc mt nc v nm trờn ng trung trc ca on S1S2 s A dao ng vi biờn bng na biờn cc i C dao ng vi biờn cc tiu B dao ng vi biờn cc i D khụng dao ng Cõu 40: Thc hin thớ nghim giao thoa súng trờn mt cht lng vi hai ngun súng kt hp S 1 v S2 cỏch nhau l = 9 cm dao ng cựng pha im M cỏch S1, S2 nhng khong d1 = 6cm, d2 = 8cm dao ng vi biờn cc i Gia ng cc i qua M v ng trung trc khụng cú cc i... vi hai ngun kt hp S 1, S2 dao ng cựng pha Nhng im trờn ng trung trc s: A Dao ng vi biờn bộ nht C Dao ng vi biờn ln nht Lê Văn Hùng Trờng THPT Chuyên Lê Quý Đôn Quảng Trị Luyn thi i hc 2009 -2010 16 Dao ng v súng c hc D Cú biờn dao ng ph thuc vo khong cỏch S1 S2 Cõu 42: Thc hin thớ nghim giao thoa súng trờn mt cht lng vi hai ngun súng kt hp S 1 v S2 cỏch nhau l = 10 cm dao ng ngc pha im M cỏch S1, . mxT23xT2:xB Câu 107 :Cơ năng của một chất điểm dao động điều hoà tỷ lệ thuận với A. bình phương biên độ dao động B. li độ của dao động C. biên độ dao động D. chu kỳ dao động. Câu 108:J"_"&<$#&5,-:4"A. vào đặc tính của hệ dao động C. Tần số dao động cưỡng bức bằng tần số của ngoại lực tuần hoàn D. Lực cản của môi trường là nguyên nhân làm cho dao động SÓNG CƠ ‹B Đại cương về sóng cơ học: TRẮC NGHIỆM: Câu. 151:Trong dao động của con lắc lò xo, nhận xét nào sau đây là sai? A. Biên độ dao động cưỡng bức chỉ phụ thuộc vào biên độ của ngoại lực tuần hoàn B. Tần số dao động riêng chỉ phụ thuộc vào đặc