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Bài tập trắc nghiệm sóng cơ

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CHƯƠNG 2: SÓNG CƠ HỌC 1. ĐẠI CƯƠNG VỀ SÓNG Câu 1( ĐH2009).  !"#$% & ' !"#$ (& '#$ ) !"#$ Câu 2(DH 2011).*+  ,!-."/  !"#$ 0 !"'1 2#3 (0 !"'4 2 )& ' !"#$  Câu 3(ĐH 2012):5."6 !"278+  ,!-/ 9&:;27 < !&+=# >&:;27 &+=#? @A A  (9&:;27 !". < !&+= # )>&:;27 :+=#% Câu 4( ĐH2007). B C#D= EFAπGH.I+J,!K 7F8! !"%L M7+J+ &+/ FA NA (OA )PA Câu 5.( ĐH_2010)K Q 2 Q  R S Q , T  R  T 2 Q  2 U #2 Q . T , U 2 T OFA>V8 Q  T 2 R  Q  S Q , T  R WD T X Q 2 U  T 2 Q  ! U  T 8 R . U 2 Q Y T . T  2 U 8 Q  T , T  T  Q   T SA8XK2 T 2 Q  ! U  T  U OFZ OXZ (PAZ )FXZ Câu 6.0&<[A>V !"27..\<NZ);&:.\'$  !" C$&%PO.PP8X8?   F π # π# (Fπ# ) P π # Câu 7.B =F !".<OZ5& '  !"$&:27#%  A8X O8A (F8A )F8X Câu 8( ĐH2009).B C#D= N N G H N u t cm π π   = −  ÷   ]#$ & ' !" A8X? P π K< !"; ^  O8AZ F8AZ (O8XZ )_8AZ Câu 9(ĐH2011). B= !"D`ab C`.&<FA>V8< !"J bA8cZ]OZd3.J`a8eI.`. OA >&:27$. 2#%. K< !" OAAZ [AZ ([XZ )@AZ Câu 10(CĐ 2012). B !"%#,!'#.< !"NZ.&<fb PP>V]NP>V]&:$#,! FX 2#% K&< #,! NF>V PX>V (NA>V )Pc>V O Câu 11(ĐH2008). B !"7gb`]B`$#]& <h8+λ.+;2iL = !"9] =#;&: .\'$B#$ B GHEFπh==#;&:.\'$`  π λ d u (t) a cos (ft )= − 0 2   π λ d u (t) a cos (ft )= + 0 2  ( d u (t) a cos (ft )π λ = − 0  ) d u (t) a cos (ft )π λ = + 0 Câu 12(ĐH2011).K$0j!k C#" Dgl.&<h 5j=?mC,0K$B89J X7g L 0 2#%. ]< !"j[AZ.&<; C# !ibN[>V]_N>VK&<#; C _N>V N[>V (XN>V )X_>V Câu 13. 0&<[A>V !"27..\<NZ);&:.\' $ !" C$&%PO.PP8X8?   F π # π# (Fπ# ) P π # Câu 14(ĐH2003).K$0j!k C#" Dgl.&< XA>V5j=?mC,0K$B89J @7 gL 0 2#. ]J8< !"!ibcAZ] [AZK< !"j cXZ [AZ (cAZ )cFZ Câu 15.0 !"27#3Dn`a.= GFA NaH = − GHGaI+J o8I+J,!Hp\< !"!27+J XZ XAZ (NAZ )NZ Câu 16. B !"Dn`a.= EGNπqA8AFπaHG .aI+J8I+J,!H K< !";! OAAZ OXAZ (FAAZ )XAZ Câu 17. B !"27#3Dn`a.= EXG_πrπaHGHGaI+J o8I+J,!HK< !"+J  O _ Z PZ (_Z ) O P Z Câu 18(ĐH 2012):>B89J !". &++ 2iL = !"K$78#;&:$BP=# ;&:$9rP+J _ P ( F P  ) P F  2. GIAO THOA SÓNG Câu 19( ĐH_2010).s U  Q  R  T S Q  8 Q . T   U  T  R a , T  T  U   2 U #2 Q   U +2 Q . U  T  Q 2 T 22 R D U   U , U 2 T 8 U  ( T  U +, U . U  U +2 Q ) U , U 2 T 8 U . U  T  Q 2 T 22 R D U  Câu 20. tj C#D. 2.j8= E ωK"j ;8e&:#.+6$u ? 7;b C]+J <v&:+ < !&+ (< !&:+ )<v&+ F Câu 21(ĐH2007).s87+<IjJ C]%0 O .0 F  > C!#" mDgl8WD+2!iL =  !"( j.J7 6;$0 O 0 F u #.++J:+6$ #.+6  (#.+6$ )2# Câu 22(CĐ2012).K$j'4 C]%0 O .0 F #D. 2.j '4= EFNA π G I+J8I+JHK< !"j' 4[AZd3Bj'40 O 80 F &%OF.@(+; !"b  C]B2i*&:'4$B#.+ A. F  B. F F  C.N D.F Câu 23(ĐH2008).K$.27 !" C]%8# .  = & %   Eω.  EGωwπH ] .\ <.+#x C $2iL = !"K.#  C ,! *&:.\'$ ;$#.++J A ZF ( )F Câu 24.K$B.927 !" C]%. #]+8.\<;2iL = !"8&<;+JNA>V.6 $B9K3B98#+6$& ' O8Xp\ < !"27!+J F8NZ O8FZ (A8PZ )A8_Z Câu 25(CĐ 2010).tj;'4 C]%.#" m. . Dgl]< !"2iL = !"8+#x C +JOF51'#.+6J$g @ OF (_ )P Câu 26(CĐ2012). K$j;'4 C0 O .0 F #Dgl. = ENAπG2i8I+JHK< !"j'4+J[AZ 51'&:'4$g0 O 0 F #.+6$ N _ (F )O Câu 27(CĐ2007). KjJ8$0 O 80 F  [8F87j C ]%8#" Dgl&<OX>V. 2#C].\< !" jPAZ8+2i !"0<#.+6$ $0 O 0 F  OO [ (X )@ Câu 28( ĐH_2009).t+"j'4 C]%0 O .0 F  FA> C! #Dgl=&% O EXNAyGH. F EXGNAywyHGHK<  !"j'4[AZ0<#.+6$$g0 O 0 F ^ OO @ (OA )[ Câu 29 (ĐH2010).tj;'4 C]%. FA8#D gl.=  EFNAπ.  EFGNAπwπHG  .  I+J8I+JH] < !"j'4PAZWo=. 2B9 j'40<# .+6$$B O@ O[ (FA )Oc Câu 30(ĐH2011).tj'4 C8 O[8#Dgl. =  E  EXAπG.I+JHK< !";j'4XAZd3`  ;8Bej'4J7 6;.&`'&:'4$B #.&:'4$`5B` OA  F OA  ( F F  )F Câu 31(ĐH 2012):K?L%8 C#D. 2.j8 +88&<XA>V%j$0 O .0 F  OAK< !"j cXZWoj 7m,0 O 8+I0 O 0 F 8&:$# .+6$0 F $1'+J P [X OX (OA )[@ Câu 32:KjF C<? . EFN( + λ EF8X>B.9j"  ;$$ O_." F C..0<$B9#.F C A.c B.[ C._ Câu 33:tj C. OX8#" m&<8cùng pha D. 2.jsBJ8 `O8X8&`'  2#.+6$K7m,`87IFA8Jej< 2 #.+6$ O[ O_ (FF )Oc Câu 34:Kj C< .8 EOF#. 2 .j$+O8_d3B.9 j8"  C. z;[0<#. Ce$ B9+J   A. X B. _ C. c D. P Câu 35: K$.j [ C]%#.=^ O F NA GH= = π 8< !"j PA Z  Wo$g()ENj  7 6.5'b()]$(){P## .+6$^ A. P8P B. _ C. [8@ D. @8c 3. SÓNG DỪNG Câu 36.5."6a$;.\<f8+  ,!-/ K&<;a$ 2&<; 0a$ 2%.ea$ (K&<;a$ 24&<; )0a$ 2.ea$ Câu 37.5."6a$;& #,!6#8+  ,!-/ K&<;a$ 2&<; 0a$ 2%.ea$ (K&<;a$ 24&<; )0a$ 2.ea$ Câu 38(CĐ 2007).K%#,!" #l8& <f8#bK#,!+n ].\< !"#,!.2iK&<;  .Zl .ZF l (F.Z l ).ZN l Câu 39.K%#,!#b.+ λ 5-"" A. F λ  B.F λ  C. N λ  D. λ  Câu 40(ĐH2007).K%#,!#F#b.&<OAA>V87'!F& #,!<f mP 2l!p\< !"#,!^ _AZ [AZ (NAZ )OAAZ Câu 51( ĐH2009).K%#,!C#O8[8& <f8#b._+n]  !"#,!&<OAA>VK< !"#,!^ FAZ _AAZ (_AZ )OAZ Câu 52(ĐH 2012)K%#,!C#OAA.& .<f#b8&<XA >V52& .8#,!P-K< !"#,! N OXZ PAZ (FAZ )FXZ Câu 53.B2 Q  Q #,! T  U # U OS8, U 2 T  Q 8, U S T . T 2 Q  T  R ,#2 Q   U  U . T , U 2 T FA>VK#,! T 2 Q  T # U 2 R  Q . T N+ Q  T 8 Q  U  T  T K2 T 2 Q  ! U  T #,! U XAZ FZ (OAZ )F8XZ Câu 54. K%#,!C#O8F8& <f8#b] !"#,!&<OAA >V.<[AZ0<+n#,! P X (N )F Câu 55. ),!ENAS8& <f8#b=$B+nlNGbH8+] BEONKi<+n.-#,! A. OA B. FO C. FA D. O@ Câu 56(ĐH 2011).B%#,!CS8& <fK#,!#b8< !"2 i5&<#,!NF>V=#,!N+n9] #,!_+n=&<#,!  FXF>V OF_>V (F[>V )_P>V Câu 57( ĐH2010).B%#,!#OAAS8& <f8& 1.;,# " m.&<NA>VK#,!#bif8%-K< !" #,!FAZ5.8#,! P-.F+n c-._+n (@-.[+n )X-.N+n Câu 58.B%#,!" # l S8& <fK#,!#b.+n8<  !"#,!.57&]%#,!# xg  .  l  . l  ( F. l  ) . l  Câu 59(ĐH2008).K I?."  #b8 %#,!C # O8F. &  <f87 L '!& #,!<fm#,!2#]7 &].%#,!# xgA8AXp\< !"#,! [Z NZ (OFZ )O_Z Câu 60.KI?."#b#,!#C#O8F.& <f87L '!F & #,!<fmF#,!#+]7]F&%#,!# xg AAX+"+nNp a ;+n NA π Z[AZ(FNZ)[Z Câu 61(ĐH 2011).B%#,!CS8#bifK#,!8-8 +n&'8( ;8.EOA]71'& #;&:$+J+#;&:$(A8FK< !"#,! FZ A8XZ (OZ )A8FXZ Câu 62(ĐH 2012).K%#,!S.& <f#b52ao+nj -8L '!+.e& '=" "  OX#,! f+J PA _A (@A )NX Câu 63. B%#,!C`BE@A& <f5%II#,!=P+8 +$+nPK$9&`'+#O8X5`9\f-  ,!/ A.c8XB.OAC.XD.X8F X 4. SÓNG ÂM Câu 64.s.f7, `oG|ZH DGH (9 o. 2G9Z F H  )`o. 2G|Z F H Câu 65.5, !"b272I.27=  =;S &<;2!i (+; )+;2!i Câu 66.5.",8+  ,!/ t?8< !",2I4< !", 0, !"%27184.I (0,2I#3 )0,2I Câu 67. B C, !",g.2I.< !",.5 F& ' !",#% #K&<;,  F v d   Fv d  ( N v d  ) v d  Câu 68( ĐH2009).B, !"o..\<XAAAZ9] ?;,<e&  ' O !" Z F π =&<;+J^ OAAA>V OFXA>V (XAAA>V )FXAA>V Câu 69(ĐH2008). B  o 48  &  < f8 &  m $ % I I  # .   =2 i.+JA8A[}#o ,7D%   $  ,  ($, ) , Câu 70(ĐH2007).B,&<af !"2I...\<&%PPAZ .ONXFZ5, !"b2I=+;u N8N& N& (SN8N& )SN& Câu 71( CĐ2010).K$.fI27 !",87,S'OA&f7,+ & =l7, OA SOA (SOA# )OA# Câu 72(CĐ 2012).WoBe27C, !"L Bl7,$B~G#H 9] 7,$BSOAA&=l7,$+J OAA~G#H ~wOAAG#H (FA~G#H )~wFAG#H Câu 73(ĐH2005). K$J C,9G9 CH9EO8l7, ~  E@A#]•D;,z A EA8O|Z F (7;,$^ z  EA8O|Z F  z  EA8O|Z F  (z  EA8O|Z F  )z  EA8Od|Z F  Câu 74(ĐH 2011). B C`,2 '2i27 !",g .2'n,>8 C,&% O . F ]7,$'N&7 ,$K{< F O   +J N  O F  ( O N  )F Câu 75( ĐH2009).B, !"2IBl7,$B.$9&%NA# .[A#(7,$97,$B OAAAA& OAAA& (NA& )F& Câu 76( ĐH2010). `88J:7ga 'b`K$`j C ,g28272'n,Bl7,$_A#8$FA# Bl7,$ B;$ F_# Oc# (PN# )NA# Câu 77(ĐH 2012):K$`27g82'n,8F C,8< . 2 ',2iK$l7,FA#s$ B;$`l7 ,PA#=< C,< C,&j$`+J N P (X )c _ . GHEFπh==#;&:.'$`  π λ d u (t) a cos (ft )= − 0 2   π λ d u (t) a cos (ft )= + 0 2  ( d u (t) a cos (ft )π λ = − 0  ) d u (t) a cos (ft )π λ = + 0 Câu 12(ĐH2011).K$0j!k. m.&<NA>VK#,!#bif8% - K< !" #,!FAZ5.8#,! P - .F+n c - ._+n (@ - .[+n

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