Tham kh\u1ea3o \u0111\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia n\u0103m 2016 m\u00f4n V\u1eadt L\u00fd \u0111\u1ec1 s\u1ed1 11 c\u00f3 \u0111\u00e1p \u00e1n v\u00e0 l\u1eddi gi\u1ea3i chi ti\u1ebft gi\u00fap c\u00e1c em th\u1eed s\u1ee9c v\u1edbi k\u1ef3 thi s\u1eafp t\u1edbi.<\/strong><\/h2>\n\nXem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n L\u00fd<\/p>\n<\/div>\n
\u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n V\u1eadt L\u00fd n\u0103m 2016 – \u0110\u1ec1 s\u1ed1 11<\/strong><\/span><\/p>\n![](\"http:\/\/img.toanhoc247.com\/picture\/2015\/1109\/111.png\")
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<\/strong><\/span><\/p>\nC\u00e2u 4. (ID:89054)<\/strong>M\u1ed9t ng\u01b0\u1eddi \u0111\u1ee9ng gi\u1eefa hai loa A v\u00e0 B. Khi ch\u1ec9 c\u00f3 loa A b\u1eadt th\u00ec ng\u01b0\u1eddi \u0111\u00f3 nghe \u0111\u01b0\u1ee3c \u00e2m c\u00f3 m\u1ee9c c\u01b0\u1eddng \u0111\u1ed9 100dB. Khi c\u00f3 loa B b\u1eadt th\u00ec nghe \u0111\u01b0\u1ee3c \u00e2m c\u00f3 m\u1ee9c c\u01b0\u1eddng \u0111\u1ed9 \u00e2m 90dB. N\u1ebfu b\u1eadt c\u1ea3 hai loa t\u00ec ng\u01b0\u1eddi \u0111\u00f3 nghe \u0111\u01b0\u1ee3c \u00e2m c\u00f3 m\u1ee9c c\u01b0\u1eddng \u0111\u1ed9 \u00e2m b\u1eb1ng bao nhi\u00eau?<\/p>\nA.<\/strong>100,4dB B.<\/strong>190dB C.<\/strong>102,2dB D.<\/strong>95dB<\/p>\nC\u00e2u 5. (ID:89055)<\/strong>M\u1ed9t thang m\u00e1y chuy\u1ec3n \u0111\u1ed9ng theo ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng v\u1edbi gia t\u1ed1c c\u00f3 \u0111\u1ed9 l\u1edbn nh\u1ecf h\u01a1n gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng t\u1ea1i n\u01a1i \u0111\u1eb7t thang m\u00e1y. Trong thang m\u00e1y c\u00f3 treo m\u1ed9t con l\u1eafc dao \u0111\u1ed9ng v\u1edbi bi\u00ean \u0111\u1ed9 nh\u1ecf. Chu k\u1ef3 dao \u0111\u1ed9ng c\u1ee7a con l\u1eafc khi thang m\u00e1y \u0111\u1ee9ng y\u00ean b\u1eb1ng 1,1 l\u1ea7n khi thang m\u00e1y chuy\u1ec3n \u0111\u1ed9ng. \u0110i\u1ec1u \u0111\u00f3 ch\u1ee9ng t\u1ecf vecto gia t\u1ed1c c\u1ee7a thang m\u00e1y<\/p>\nA.<\/strong>H\u01b0\u1edbng l\u00ean tr\u00ean v\u00e0 c\u00f3 \u0111\u1ed9 l\u1edbn l\u00e0 0,11g B.<\/strong>H\u01b0\u1edbng xu\u1ed1ng d\u01b0\u1edbi v\u00e0 c\u00f3 \u0111\u1ed9 l\u1edbn 0,11g<\/p>\nC.<\/strong>H\u01b0\u1edbng l\u00ean tr\u00ean v\u00e0 c\u00f3 \u0111\u1ed9 l\u1edbn l\u00e0 0,21g D.<\/strong>H\u01b0\u1edbng xu\u1ed1ng d\u01b0\u1edbi v\u00e0 c\u00f3 \u0111\u1ed9 l\u1edbn l\u00e0 0,21g<\/p>\n![](\"http:\/\/img.toanhoc247.com\/picture\/2015\/1109\/112.png\")
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C\u00e2u 7. (ID:89057)<\/strong>H\u00ecnh chi\u1ebfu c\u1ee7a m\u1ed9t ch\u1ea5t \u0111i\u1ec3m chuy\u1ec3n \u0111\u1ed9ng tr\u00f2n \u0111\u1ec1u l\u00ean m\u1ed9t \u0111\u01b0\u1eddng k\u00ednh qu\u1ef9 \u0111\u1ea1o l\u00e0 m\u1ed9t dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a. Ph\u00e1t bi\u1ec3u n\u00e0o sau \u0111\u00e2ysai?<\/strong><\/p>\nA.<\/strong>Bi\u00ean \u0111\u1ed9 c\u1ee7a dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a b\u1eb1ng b\u00e1n k\u00ednh c\u1ee7a chuy\u1ec3n \u0111\u1ed9ng tr\u00f2n \u0111\u1ec1u<\/p>\nB<\/strong>. T\u1ea7n s\u1ed1 g\u00f3c c\u1ee7a dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a b\u1eb1ng t\u1ed1c \u0111\u1ed9 g\u00f3c c\u1ee7a chuy\u1ec3n \u0111\u1ed9ng tr\u00f2n \u0111\u1ec1u<\/p>\nC.<\/strong>L\u1ef1c k\u00e9o v\u1ec1 trong dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a c\u00f3 \u0111\u1ed9 l\u1edbn b\u1eb1ng \u0111\u1ed9 l\u1edbn l\u1ef1c h\u01b0\u1edbng t\u00e2m trong chuy\u1ec3n \u0111\u1ed9ng tr\u00f2n \u0111\u1ec1u<\/p>\nD<\/strong>. T\u1ed1c \u0111\u1ed9 c\u1ef1c \u0111\u1ea1i c\u1ee7a dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a b\u1eb1ng t\u1ed1c \u0111\u1ed9 d\u00e0i c\u1ee7a chuy\u1ec3n \u0111\u1ed9ng tr\u00f2n \u0111\u1ec1u<\/p>\nC\u00e2u 8. (ID:89058)<\/strong>Ph\u00e1t bi\u1ec3u n\u00e0o sau \u0111\u00e2y l\u00e0sai?<\/strong><\/p>\nA.<\/strong>L\u1ef1c c\u1ea3n c\u00e0ng l\u1edbn th\u00ec s\u1ef1 t\u1eaft d\u1ea7n c\u00e0ng nhanh<\/p>\nB.<\/strong>Bi\u00ean \u0111\u1ed9 c\u1ee7a dao \u0111\u1ed9ng gi\u1ea3m d\u1ea7n<\/p>\nC.<\/strong>Chu k\u1ef3 c\u1ee7a dao \u0111\u1ed9ng c\u00e0ng nh\u1ecf th\u00ec dao \u0111\u1ed9ng t\u1eaft d\u1ea7n c\u00e0ng ch\u1eadm.<\/p>\nD.<\/strong>C\u01a1 n\u0103ng c\u1ee7a dao \u0111\u1ed9ng gi\u1ea3m d\u1ea7n<\/p>\nC\u00e2u 9. (ID:89059)<\/strong>M\u1ed9t ngu\u1ed3n dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a v\u1edbi t\u1ea7n s\u1ed1 f = 50Hz t\u1ea1o ra \u0111i\u1ec3m O tr\u00ean m\u1eb7t n\u01b0\u1edbc nh\u1eefng s\u00f3ng tr\u00f2n \u0111\u1ed3ng t\u00e2m O c\u00e1ch \u0111\u1ec1u nhanh, m\u1ed7i g\u1ee3n tr\u00f2n c\u00e1ch nhau 3cm. T\u1ed1c \u0111\u1ed9 truy\u1ec1n s\u1ed1ng ngang tr\u00ean m\u1eb7t n\u01b0\u1edbc b\u1eb1ng:<\/p>\nA.<\/strong>v = 120(cm\/s) B.<\/strong>v = 150(cm\/s) C.<\/strong>360(cm\/s) D.<\/strong>150(m\/s)<\/p>\nC\u00e2u 10. (ID:89060)<\/strong>T\u1ea1i hai \u0111i\u1ec3m M v\u00e0 N trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng truy\u1ec1n s\u00f3ng c\u00f3 hai ngu\u1ed3n s\u00f3ng k\u1ebft h\u1ee3p dao \u0111\u1ed9ng c\u00f9ng pha. Bi\u1ebft bi\u00ean \u0111\u1ed9 v\u00e0 t\u1ed1c \u0111\u1ed9 truy\u1ec1n s\u1ed1ng kh\u00f4ng \u0111\u1ed5i, t\u1ea7n s\u1ed1 s\u00f3ng b\u1eb1ng 40Hz. Tr\u00ean \u0111o\u1ea1n MN, hai \u0111i\u1ec3m dao \u0111\u1ed9ng v\u1edbi bi\u00ean \u0111\u1ed9 c\u1ef1c \u0111\u1ea1i g\u1ea7n nhau nh\u1ea5t c\u00e1ch nhau 1,5cm. T\u1ed1c \u0111\u1ed9 truy\u1ec1n s\u00f3ng trong m\u00f4i tr\u01b0\u1eddng n\u00e0y b\u1eb1ng<\/p>\nA.<\/strong>1,2(m\/s) B.<\/strong>2,4(m\/s) C.<\/strong>0,6(m\/s) D.<\/strong>0,3(m\/s)<\/p>\nC\u00e2u 11. (ID:89061)<\/strong>Ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang. C\u00e1c \u0111\u1eb7c tr\u01b0ng v\u1eadt l\u00fd c\u1ee7a \u00e2m g\u1ed3m<\/p>\nA.<\/strong>\u00c2m s\u1eafc, c\u01b0\u1eddng \u0111\u1ed9 \u00e2m, \u0111\u1ed3 th\u1ecb dao \u0111\u1ed9ng c\u1ee7a \u00e2m <\/p>\nB.<\/strong>T\u1ea7n s\u1ed1, c\u01b0\u1eddng \u0111\u1ed9 \u00e2m, \u0111\u1ed3 th\u1ecb dao \u0111\u1ed9ng c\u1ee7a \u00e2m<\/p>\nC.<\/strong>T\u1ea7n s\u1ed1, c\u01b0\u1eddng \u0111\u1ed9 \u00e2m, \u0111\u1ed9 cao<\/p>\nD<\/strong>. T\u1ea7n s\u1ed1, c\u01b0\u1eddng \u0111\u1ed9 \u00e2m, \u0111\u1ed9 to<\/p>\nC\u00e2u 12. (ID:89062)<\/strong>\u0110i\u1ec1u ki\u1ec7n hai s\u00f3ng c\u01a1 g\u1eb7p nhau, giao thoa \u0111\u01b0\u1ee3c v\u1edbi nhau l\u00e0 hai s\u00f3ng ph\u1ea3i xu\u1ea5t ph\u00e1t t\u1eeb hai ngu\u1ed3n dao \u0111\u1ed9ng<\/p>\nA.<\/strong>c\u00f9ng bi\u00ean \u0111\u1ed9 v\u00e0 c\u00f3 hi\u1ec7u s\u1ed1 pha kh\u00f4ng \u0111\u1ed5i theo th\u1eddi gian<\/p>\nB.<\/strong>c\u00f9ng t\u1ea7n s\u1ed1, c\u00f9ng ph\u01b0\u01a1ng<\/p>\nC.<\/strong>c\u00f3 c\u00f9ng pha ban \u0111\u1ea7u v\u00e0 c\u00f9ng bi\u00ean \u0111\u1ed9<\/p>\nD.<\/strong>c\u00f9ng t\u1ea7n s\u1ed1, c\u00f9ng ph\u01b0\u01a1ng v\u00e0 c\u00f3 hi\u1ec7u s\u1ed1 pha kh\u00f4ng \u0111\u1ed5i theo th\u1eddi gian<\/p>\nC\u00e2u 13. (ID:89063)<\/strong>N\u1ebfu t\u0103ng kh\u1ed1i l\u01b0\u1ee3ng v\u1eadt n\u1eb7ng c\u1ee7a con l\u1eafc l\u00f2 xo l\u00ean g\u1ea5p \u0111\u00f4i v\u00e0 gi\u1eef nguy\u00ean bi\u00ean \u0111\u1ed9 dao \u0111\u1ed9ng th\u00ec c\u01a1 n\u0103ng c\u1ee7a con l\u1eafc<\/p>\nA.<\/strong>kh\u00f4ng thay \u0111\u1ed5i B.<\/strong>gi\u1ea3m 2 l\u1ea7n C.<\/strong>t\u0103ng g\u1ea5p \u0111\u00f4i D.<\/strong>t\u0103ng 4 l\u1ea7n<\/p>\n![](\"http:\/\/img.toanhoc247.com\/picture\/2015\/1109\/113.png\")
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C\u00e2u 15. (ID:89065)<\/strong>Bi\u00ean \u0111\u1ed9 c\u1ee7a v\u1eadt dao \u0111\u1ed9ng c\u01b0\u1ee1ng b\u1ee9c kh\u00f4ng thay \u0111\u1ed5i khi<\/p>\nA.<\/strong>bi\u00ean \u0111\u1ed9 ngo\u1ea1i l\u1ef1c tu\u1ea7n ho\u00e0n B.<\/strong>t\u1ea7n s\u1ed1 ngo\u1ea1i l\u1ef1c tu\u1ea7n ho\u00e0n<\/p>\nC.<\/strong>pha ban \u0111\u1ea7u ngo\u1ea1i l\u1ef1c tu\u1ea7n ho\u00e0n D.<\/strong>l\u1ef1c c\u1ea3n c\u1ee7a m\u00f4i tr\u01b0\u1eddng<\/p>\n![](\"http:\/\/img.toanhoc247.com\/picture\/2015\/1109\/114.png\")
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\u0110\u00e1p \u00e1n \u0111\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n V\u1eadt L\u00fd n\u0103m 2016- \u0110\u1ec1 s\u1ed1 11<\/strong><\/p>\n![](\"http:\/\/img.toanhoc247.com\/picture\/2015\/1109\/116.png\")
<\/strong><\/p>\n<\/p>\nT\u1ea5t c\u1ea3 n\u1ed9i dung b\u00e0i vi\u1ebft. C\u00e1c em h\u00e3y xem th\u00eam v\u00e0 t\u1ea3i file chi ti\u1ebft t\u1ea1i \u0111\u00e2y:<\/strong>Download<\/p>\n","protected":false},"excerpt":{"rendered":"Tham kh\u1ea3o \u0111\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia n\u0103m 2016 m\u00f4n V\u1eadt L\u00fd \u0111\u1ec1 s\u1ed1 11 c\u00f3 \u0111\u00e1p \u00e1n v\u00e0 l\u1eddi gi\u1ea3i chi ti\u1ebft gi\u00fap c\u00e1c em th\u1eed s\u1ee9c v\u1edbi k\u1ef3 thi s\u1eafp t\u1edbi. Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n L\u00fd \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n V\u1eadt L\u00fd n\u0103m 2016 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[25],"tags":[],"yoast_head":"\n
\u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n V\u1eadt L\u00fd 2016 - \u0110\u1ec1 s\u1ed1 11<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lop12.edu.vn\/de-thi-thu-thpt-quoc-gia-mon-vat-ly-2016-de-so-11\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n V\u1eadt L\u00fd 2016 - \u0110\u1ec1 s\u1ed1 11\" \/>\n<meta property=\"og:description\" content=\"Tham kh\u1ea3o \u0111\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia n\u0103m 2016 m\u00f4n V\u1eadt L\u00fd \u0111\u1ec1 s\u1ed1 11 c\u00f3 \u0111\u00e1p \u00e1n v\u00e0 l\u1eddi gi\u1ea3i chi ti\u1ebft gi\u00fap c\u00e1c em th\u1eed s\u1ee9c v\u1edbi k\u1ef3 thi s\u1eafp t\u1edbi. 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Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n L\u00fd<\/p>\n<\/div>\n
\u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n V\u1eadt L\u00fd n\u0103m 2016 – \u0110\u1ec1 s\u1ed1 11<\/strong><\/span><\/p>\n C\u00e2u 4. (ID:89054)<\/strong>M\u1ed9t ng\u01b0\u1eddi \u0111\u1ee9ng gi\u1eefa hai loa A v\u00e0 B. Khi ch\u1ec9 c\u00f3 loa A b\u1eadt th\u00ec ng\u01b0\u1eddi \u0111\u00f3 nghe \u0111\u01b0\u1ee3c \u00e2m c\u00f3 m\u1ee9c c\u01b0\u1eddng \u0111\u1ed9 100dB. Khi c\u00f3 loa B b\u1eadt th\u00ec nghe \u0111\u01b0\u1ee3c \u00e2m c\u00f3 m\u1ee9c c\u01b0\u1eddng \u0111\u1ed9 \u00e2m 90dB. N\u1ebfu b\u1eadt c\u1ea3 hai loa t\u00ec ng\u01b0\u1eddi \u0111\u00f3 nghe \u0111\u01b0\u1ee3c \u00e2m c\u00f3 m\u1ee9c c\u01b0\u1eddng \u0111\u1ed9 \u00e2m b\u1eb1ng bao nhi\u00eau?<\/p>\n A.<\/strong>100,4dB B.<\/strong>190dB C.<\/strong>102,2dB D.<\/strong>95dB<\/p>\n C\u00e2u 5. (ID:89055)<\/strong>M\u1ed9t thang m\u00e1y chuy\u1ec3n \u0111\u1ed9ng theo ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng v\u1edbi gia t\u1ed1c c\u00f3 \u0111\u1ed9 l\u1edbn nh\u1ecf h\u01a1n gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng t\u1ea1i n\u01a1i \u0111\u1eb7t thang m\u00e1y. Trong thang m\u00e1y c\u00f3 treo m\u1ed9t con l\u1eafc dao \u0111\u1ed9ng v\u1edbi bi\u00ean \u0111\u1ed9 nh\u1ecf. Chu k\u1ef3 dao \u0111\u1ed9ng c\u1ee7a con l\u1eafc khi thang m\u00e1y \u0111\u1ee9ng y\u00ean b\u1eb1ng 1,1 l\u1ea7n khi thang m\u00e1y chuy\u1ec3n \u0111\u1ed9ng. \u0110i\u1ec1u \u0111\u00f3 ch\u1ee9ng t\u1ecf vecto gia t\u1ed1c c\u1ee7a thang m\u00e1y<\/p>\n A.<\/strong>H\u01b0\u1edbng l\u00ean tr\u00ean v\u00e0 c\u00f3 \u0111\u1ed9 l\u1edbn l\u00e0 0,11g B.<\/strong>H\u01b0\u1edbng xu\u1ed1ng d\u01b0\u1edbi v\u00e0 c\u00f3 \u0111\u1ed9 l\u1edbn 0,11g<\/p>\n C.<\/strong>H\u01b0\u1edbng l\u00ean tr\u00ean v\u00e0 c\u00f3 \u0111\u1ed9 l\u1edbn l\u00e0 0,21g D.<\/strong>H\u01b0\u1edbng xu\u1ed1ng d\u01b0\u1edbi v\u00e0 c\u00f3 \u0111\u1ed9 l\u1edbn l\u00e0 0,21g<\/p>\n C\u00e2u 7. (ID:89057)<\/strong>H\u00ecnh chi\u1ebfu c\u1ee7a m\u1ed9t ch\u1ea5t \u0111i\u1ec3m chuy\u1ec3n \u0111\u1ed9ng tr\u00f2n \u0111\u1ec1u l\u00ean m\u1ed9t \u0111\u01b0\u1eddng k\u00ednh qu\u1ef9 \u0111\u1ea1o l\u00e0 m\u1ed9t dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a. Ph\u00e1t bi\u1ec3u n\u00e0o sau \u0111\u00e2ysai?<\/strong><\/p>\n A.<\/strong>Bi\u00ean \u0111\u1ed9 c\u1ee7a dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a b\u1eb1ng b\u00e1n k\u00ednh c\u1ee7a chuy\u1ec3n \u0111\u1ed9ng tr\u00f2n \u0111\u1ec1u<\/p>\n B<\/strong>. T\u1ea7n s\u1ed1 g\u00f3c c\u1ee7a dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a b\u1eb1ng t\u1ed1c \u0111\u1ed9 g\u00f3c c\u1ee7a chuy\u1ec3n \u0111\u1ed9ng tr\u00f2n \u0111\u1ec1u<\/p>\n C.<\/strong>L\u1ef1c k\u00e9o v\u1ec1 trong dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a c\u00f3 \u0111\u1ed9 l\u1edbn b\u1eb1ng \u0111\u1ed9 l\u1edbn l\u1ef1c h\u01b0\u1edbng t\u00e2m trong chuy\u1ec3n \u0111\u1ed9ng tr\u00f2n \u0111\u1ec1u<\/p>\n D<\/strong>. T\u1ed1c \u0111\u1ed9 c\u1ef1c \u0111\u1ea1i c\u1ee7a dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a b\u1eb1ng t\u1ed1c \u0111\u1ed9 d\u00e0i c\u1ee7a chuy\u1ec3n \u0111\u1ed9ng tr\u00f2n \u0111\u1ec1u<\/p>\n C\u00e2u 8. (ID:89058)<\/strong>Ph\u00e1t bi\u1ec3u n\u00e0o sau \u0111\u00e2y l\u00e0sai?<\/strong><\/p>\n A.<\/strong>L\u1ef1c c\u1ea3n c\u00e0ng l\u1edbn th\u00ec s\u1ef1 t\u1eaft d\u1ea7n c\u00e0ng nhanh<\/p>\n B.<\/strong>Bi\u00ean \u0111\u1ed9 c\u1ee7a dao \u0111\u1ed9ng gi\u1ea3m d\u1ea7n<\/p>\n C.<\/strong>Chu k\u1ef3 c\u1ee7a dao \u0111\u1ed9ng c\u00e0ng nh\u1ecf th\u00ec dao \u0111\u1ed9ng t\u1eaft d\u1ea7n c\u00e0ng ch\u1eadm.<\/p>\n D.<\/strong>C\u01a1 n\u0103ng c\u1ee7a dao \u0111\u1ed9ng gi\u1ea3m d\u1ea7n<\/p>\n C\u00e2u 9. (ID:89059)<\/strong>M\u1ed9t ngu\u1ed3n dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a v\u1edbi t\u1ea7n s\u1ed1 f = 50Hz t\u1ea1o ra \u0111i\u1ec3m O tr\u00ean m\u1eb7t n\u01b0\u1edbc nh\u1eefng s\u00f3ng tr\u00f2n \u0111\u1ed3ng t\u00e2m O c\u00e1ch \u0111\u1ec1u nhanh, m\u1ed7i g\u1ee3n tr\u00f2n c\u00e1ch nhau 3cm. T\u1ed1c \u0111\u1ed9 truy\u1ec1n s\u1ed1ng ngang tr\u00ean m\u1eb7t n\u01b0\u1edbc b\u1eb1ng:<\/p>\n A.<\/strong>v = 120(cm\/s) B.<\/strong>v = 150(cm\/s) C.<\/strong>360(cm\/s) D.<\/strong>150(m\/s)<\/p>\n C\u00e2u 10. (ID:89060)<\/strong>T\u1ea1i hai \u0111i\u1ec3m M v\u00e0 N trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng truy\u1ec1n s\u00f3ng c\u00f3 hai ngu\u1ed3n s\u00f3ng k\u1ebft h\u1ee3p dao \u0111\u1ed9ng c\u00f9ng pha. Bi\u1ebft bi\u00ean \u0111\u1ed9 v\u00e0 t\u1ed1c \u0111\u1ed9 truy\u1ec1n s\u1ed1ng kh\u00f4ng \u0111\u1ed5i, t\u1ea7n s\u1ed1 s\u00f3ng b\u1eb1ng 40Hz. Tr\u00ean \u0111o\u1ea1n MN, hai \u0111i\u1ec3m dao \u0111\u1ed9ng v\u1edbi bi\u00ean \u0111\u1ed9 c\u1ef1c \u0111\u1ea1i g\u1ea7n nhau nh\u1ea5t c\u00e1ch nhau 1,5cm. T\u1ed1c \u0111\u1ed9 truy\u1ec1n s\u00f3ng trong m\u00f4i tr\u01b0\u1eddng n\u00e0y b\u1eb1ng<\/p>\n A.<\/strong>1,2(m\/s) B.<\/strong>2,4(m\/s) C.<\/strong>0,6(m\/s) D.<\/strong>0,3(m\/s)<\/p>\n C\u00e2u 11. (ID:89061)<\/strong>Ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang. C\u00e1c \u0111\u1eb7c tr\u01b0ng v\u1eadt l\u00fd c\u1ee7a \u00e2m g\u1ed3m<\/p>\n A.<\/strong>\u00c2m s\u1eafc, c\u01b0\u1eddng \u0111\u1ed9 \u00e2m, \u0111\u1ed3 th\u1ecb dao \u0111\u1ed9ng c\u1ee7a \u00e2m <\/p>\n B.<\/strong>T\u1ea7n s\u1ed1, c\u01b0\u1eddng \u0111\u1ed9 \u00e2m, \u0111\u1ed3 th\u1ecb dao \u0111\u1ed9ng c\u1ee7a \u00e2m<\/p>\n C.<\/strong>T\u1ea7n s\u1ed1, c\u01b0\u1eddng \u0111\u1ed9 \u00e2m, \u0111\u1ed9 cao<\/p>\n D<\/strong>. T\u1ea7n s\u1ed1, c\u01b0\u1eddng \u0111\u1ed9 \u00e2m, \u0111\u1ed9 to<\/p>\n C\u00e2u 12. (ID:89062)<\/strong>\u0110i\u1ec1u ki\u1ec7n hai s\u00f3ng c\u01a1 g\u1eb7p nhau, giao thoa \u0111\u01b0\u1ee3c v\u1edbi nhau l\u00e0 hai s\u00f3ng ph\u1ea3i xu\u1ea5t ph\u00e1t t\u1eeb hai ngu\u1ed3n dao \u0111\u1ed9ng<\/p>\n A.<\/strong>c\u00f9ng bi\u00ean \u0111\u1ed9 v\u00e0 c\u00f3 hi\u1ec7u s\u1ed1 pha kh\u00f4ng \u0111\u1ed5i theo th\u1eddi gian<\/p>\n B.<\/strong>c\u00f9ng t\u1ea7n s\u1ed1, c\u00f9ng ph\u01b0\u01a1ng<\/p>\n C.<\/strong>c\u00f3 c\u00f9ng pha ban \u0111\u1ea7u v\u00e0 c\u00f9ng bi\u00ean \u0111\u1ed9<\/p>\n D.<\/strong>c\u00f9ng t\u1ea7n s\u1ed1, c\u00f9ng ph\u01b0\u01a1ng v\u00e0 c\u00f3 hi\u1ec7u s\u1ed1 pha kh\u00f4ng \u0111\u1ed5i theo th\u1eddi gian<\/p>\n C\u00e2u 13. (ID:89063)<\/strong>N\u1ebfu t\u0103ng kh\u1ed1i l\u01b0\u1ee3ng v\u1eadt n\u1eb7ng c\u1ee7a con l\u1eafc l\u00f2 xo l\u00ean g\u1ea5p \u0111\u00f4i v\u00e0 gi\u1eef nguy\u00ean bi\u00ean \u0111\u1ed9 dao \u0111\u1ed9ng th\u00ec c\u01a1 n\u0103ng c\u1ee7a con l\u1eafc<\/p>\n A.<\/strong>kh\u00f4ng thay \u0111\u1ed5i B.<\/strong>gi\u1ea3m 2 l\u1ea7n C.<\/strong>t\u0103ng g\u1ea5p \u0111\u00f4i D.<\/strong>t\u0103ng 4 l\u1ea7n<\/p>\n C\u00e2u 15. (ID:89065)<\/strong>Bi\u00ean \u0111\u1ed9 c\u1ee7a v\u1eadt dao \u0111\u1ed9ng c\u01b0\u1ee1ng b\u1ee9c kh\u00f4ng thay \u0111\u1ed5i khi<\/p>\n A.<\/strong>bi\u00ean \u0111\u1ed9 ngo\u1ea1i l\u1ef1c tu\u1ea7n ho\u00e0n B.<\/strong>t\u1ea7n s\u1ed1 ngo\u1ea1i l\u1ef1c tu\u1ea7n ho\u00e0n<\/p>\n C.<\/strong>pha ban \u0111\u1ea7u ngo\u1ea1i l\u1ef1c tu\u1ea7n ho\u00e0n D.<\/strong>l\u1ef1c c\u1ea3n c\u1ee7a m\u00f4i tr\u01b0\u1eddng<\/p>\n \u0110\u00e1p \u00e1n \u0111\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n V\u1eadt L\u00fd n\u0103m 2016- \u0110\u1ec1 s\u1ed1 11<\/strong><\/p>\n T\u1ea5t c\u1ea3 n\u1ed9i dung b\u00e0i vi\u1ebft. C\u00e1c em h\u00e3y xem th\u00eam v\u00e0 t\u1ea3i file chi ti\u1ebft t\u1ea1i \u0111\u00e2y:<\/strong>Download<\/p>\n","protected":false},"excerpt":{"rendered":" Tham kh\u1ea3o \u0111\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia n\u0103m 2016 m\u00f4n V\u1eadt L\u00fd \u0111\u1ec1 s\u1ed1 11 c\u00f3 \u0111\u00e1p \u00e1n v\u00e0 l\u1eddi gi\u1ea3i chi ti\u1ebft gi\u00fap c\u00e1c em th\u1eed s\u1ee9c v\u1edbi k\u1ef3 thi s\u1eafp t\u1edbi. Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n L\u00fd \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n V\u1eadt L\u00fd n\u0103m 2016 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[25],"tags":[],"yoast_head":"\n<\/span>
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