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{"id":28416,"date":"2018-04-23T11:51:01","date_gmt":"2018-04-23T04:51:01","guid":{"rendered":"https:\/\/lop12.edu.vn\/?p=28416"},"modified":"2018-04-23T11:51:01","modified_gmt":"2018-04-23T04:51:01","slug":"gioi-han-kien-thuc-vat-ly-12-trong-ky-thi-tuyen-sinh-nam-2018","status":"publish","type":"post","link":"https:\/\/lop12.edu.vn\/gioi-han-kien-thuc-vat-ly-12-trong-ky-thi-tuyen-sinh-nam-2018\/","title":{"rendered":"Gi\u1edbi h\u1ea1n ki\u1ebfn th\u1ee9c V\u1eadt L\u00fd 12 trong k\u1ef3 thi tuy\u1ec3n sinh n\u0103m 2018"},"content":{"rendered":"
N\u0103m 2018, c\u1ea5u tr\u00fac \u0111\u1ec1 thi V\u1eadt L\u00fd c\u00f3 s\u1ef1 thay \u0111\u1ed5i, theo \u0111\u00f3 s\u1ebd bao g\u1ed3m c\u1ea3 ch\u01b0\u01a1ng tr\u00ecnh l\u1edbp 11 v\u00e0 l\u1edbp 12, th\u00ed sinh c\u1ea7n bi\u1ebft ph\u00e2n chia ki\u1ebfn th\u1ee9c \u0111\u1ec3 \u00f4n t\u1eadp nh\u1eb1m tr\u00e1nh b\u1ecf s\u00f3t n\u1ed9i dung.<\/strong><\/em><\/h5>\n

N\u0103m 2017 ki\u1ebfn th\u1ee9c \u0111\u1ec1 thi THPT Qu\u1ed1c Gia m\u00f4n V\u1eadt L\u00fd ch\u1ec9 g\u00f3i g\u1ecdn trong ch\u01b0\u01a1ng tr\u00ecnh l\u1edbp 12, th\u1ebf nh\u01b0ng t\u1eeb n\u0103m 2018 l\u1ea1i c\u00f3 th\u00eam ch\u01b0\u01a1ng tr\u00ecnh l\u1edbp 11 v\u00ec th\u1ebf b\u1ea1n c\u1ea7n c\u00f3 chi\u1ebfn l\u01b0\u1ee3c \u00f4n thi m\u1ed9t c\u00e1ch to\u00e0n di\u1ec7n \u0111\u1ec3 n\u1eafm ch\u1eafc ki\u1ebfn th\u1ee9c. \u0110\u1ed1i v\u1edbi ch\u01b0\u01a1ng tr\u00ecnh l\u1edbp 12 trong qu\u00e1 tr\u00ecnh h\u1ecdc c\u00e1c b\u1ea1n c\u0169ng n\u00ean ch\u1ee7 \u0111\u1ed9ng \u00f4n t\u1eadp l\u1ea1i \u0111\u1ec3 kh\u00f4ng m\u1ea5t th\u1eddi gian h\u1ec7 th\u1ed1ng ki\u1ebfn th\u1ee9c v\u1ec1 sau.<\/p>\n

\u0110\u1eb7c th\u00f9 c\u1ee7a m\u00f4n V\u1eadt L\u00fd ch\u00ednh l\u00e0 m\u1ed9t s\u1ed1 ch\u01b0\u01a1ng c\u00f3 th\u1ec3 h\u1ecdc \u0111\u1ed9c l\u1eadp v\u1edbi nhau v\u00ec th\u1ebf n\u1ebfu c\u00f3 chi\u1ebfn thu\u1eadt v\u00e0 bi\u1ebft c\u00e1ch s\u1eafp x\u1ebfp th\u1eddi gian ph\u00f9 h\u1ee3p th\u00ec c\u00f3 th\u1ec3 h\u1ecdc nhi\u1ec1u ch\u01b0\u01a1ng c\u00f9ng 1 l\u00fac.<\/p>\n

Chi ti\u1ebft \u0111\u1ecbnh h\u01b0\u1edbng ki\u1ebfn th\u1ee9c V\u1eadt L\u00fd 12 cho teen 2k:<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Chuy\u00ean \u0111\u1ec1<\/strong><\/td>\nM\u1ee5c ti\u00eau 7-8 \u0111i\u1ec3m<\/strong><\/td>\nM\u1ee5c ti\u00eau 8-10 \u0111i\u1ec3m<\/strong><\/td>\n<\/tr>\n
Dao \u0111\u1ed9ng c\u01a1<\/strong><\/td>\nKho\u1ea3ng 7-8 c\u00e2u, l\u00e0 chuy\u00ean \u0111\u1ec1 chi\u1ebfm nhi\u1ec1u \u0111i\u1ec3m trong \u0111\u1ec1 thi, d\u1ea1ng b\u00e0i \u0111a d\u1ea1ng. Nh\u1eefng b\u00e0i kh\u00f3 y\u00eau c\u1ea7u h\u1ecdc sinh c\u00f3 n\u1ec1n t\u1ea3ng ki\u1ebfn th\u1ee9c v\u1eefng ch\u1eafc v\u1ec1 c\u01a1 h\u1ecdc \u2013 V\u1eadt l\u00ed 10<\/em><\/td>\n<\/tr>\n
1.1 \u0110\u1ea1i c\u01b0\u01a1ng v\u1ec1 dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a<\/p>\n

 <\/p>\n

 <\/td>\n

+ L\u00ed thuy\u1ebft v\u1ec1 dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a, ph\u01b0\u01a1ng tr\u00ecnh dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a v\u00e0 c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng \u0111\u1eb7c tr\u01b0ng nh\u01b0: t\u1ea7n s\u1ed1, t\u1ea7n s\u1ed1 g\u00f3c, pha dao \u0111\u1ed9ng<\/p>\n

+ C\u00e1c d\u1ea1ng b\u00e0i vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a khi \u0111\u00e3 bi\u1ebft tr\u1ea1ng th\u00e1i ban \u0111\u1ea7u c\u1ee7a v\u1eadt dao \u0111\u1ed9ng ho\u1eb7c d\u1ef1a v\u00e0o \u0111\u1ed3 th\u1ecb \u0111\u00e3 cho.<\/p>\n

+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i t\u1eadp d\u1ec5 v\u1ec1 th\u1eddi gian, qu\u00e3ng \u0111\u01b0\u1eddng dao \u0111\u1ed9ng, t\u1ed1c \u0111\u1ed9 trung b\u00ecnh trong dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a.<\/p>\n

+ L\u00ed thuy\u1ebft v\u00e0 d\u1ea1ng b\u00e0i t\u1eadp d\u1ec5 v\u1ec1 c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng dao \u0111\u1ed9ng trong dao \u0111\u1ed9ng \u0111i\u1ec1u ho\u00e0: li \u0111\u1ed9 x, v\u1eadn t\u1ed1c v, gia t\u1ed1c a, l\u1ef1c k\u00e9o v\u1ec1 (l\u1ef1c h\u1ed3i ph\u1ee5c) v\u00e0 \u0111\u1ed9 l\u1ec7ch pha gi\u1eefa c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng \u0111\u00f3. C\u00f4ng th\u1ee9c \u0111\u1ed9c l\u1eadp theo th\u1eddi gian c\u1ee7a c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng dao \u0111\u1ed9ng.<\/td>\n

+ L\u00ed thuy\u1ebft v\u00e0 d\u1ea1ng b\u00e0i t\u1eadp kh\u00f3 li\u00ean quan \u0111\u1ebfn \u0111\u1ea1i l\u01b0\u1ee3ng dao \u0111\u1ed9ng trong dao \u0111\u1ed9ng \u0111i\u1ec1u ho\u00e0: v\u1eadn t\u1ed1c v, gia t\u1ed1c a, l\u1ef1c k\u00e9o v\u1ec1 (l\u1ef1c h\u1ed3i ph\u1ee5c) v\u00e0 \u0111\u1ed9 l\u1ec7ch pha gi\u1eefa c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng \u0111\u00f3. C\u00f4ng th\u1ee9c \u0111\u1ed9c l\u1eadp theo th\u1eddi gian c\u1ee7a c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng dao \u0111\u1ed9ng.<\/p>\n

+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i t\u1eadp kh\u00f3 v\u1ec1 th\u1eddi gian, qu\u00e3ng \u0111\u01b0\u1eddng dao \u0111\u1ed9ng, t\u1ed1c \u0111\u1ed9 trung b\u00ecnh trong dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a<\/td>\n<\/tr>\n

1.2. Con l\u1eafc l\u00f2 xo<\/p>\n

 <\/td>\n

+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i d\u1ec5 x\u00e1c \u0111\u1ecbnh bi\u00ean \u0111\u1ed9, chi\u1ec1u d\u00e0i l\u00f2 xo, l\u1ef1c k\u00e9o v\u1ec1, l\u1ef1c \u0111\u00e0n h\u1ed3i t\u00e1c d\u1ee5ng l\u00ean v\u1eadt trong qu\u00e1 tr\u00ecnh v\u1eadt dao \u0111\u1ed9ng; th\u1eddi gian gi\u00e3n n\u00e9n c\u1ee7a l\u00f2 trong qu\u00e1 tr\u00ecnh dao \u0111\u1ed9ng; n\u0103ng l\u01b0\u1ee3ng dao \u0111\u1ed9ng c\u1ee7a con l\u1eafc, ch\u1ee7 y\u1ebfu \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c c\u00f3 s\u1eb5n.<\/td>\n+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i kh\u00f3 x\u00e1c \u0111\u1ecbnh bi\u00ean \u0111\u1ed9, chi\u1ec1u d\u00e0i l\u00f2 xo, l\u1ef1c k\u00e9o v\u1ec1, l\u1ef1c \u0111\u00e0n h\u1ed3i t\u00e1c d\u1ee5ng l\u00ean v\u1eadt trong qu\u00e1 tr\u00ecnh v\u1eadt dao \u0111\u1ed9ng; th\u1eddi gian gi\u00e3n n\u00e9n c\u1ee7a l\u00f2 trong qu\u00e1 tr\u00ecnh dao \u0111\u1ed9ng; n\u0103ng l\u01b0\u1ee3ng dao \u0111\u1ed9ng c\u1ee7a con l\u1eafc.<\/p>\n

B\u00e0i to\u00e1n con l\u1eafc ch\u1ecbu th\u00eam t\u00e1c d\u1ee5ng c\u1ee7a c\u00e1c l\u1ef1c kh\u00f4ng \u0111\u1ed5i: nh\u01b0 l\u1ef1c ma s\u00e1t, l\u1ef1c \u0111i\u1ec7n; con l\u1eafc \u0111\u1eb7t tr\u00ean m\u1eb7t ph\u1eb3ng nghi\u00eang, \u2026<\/p>\n

+ M\u1ed9t s\u1ed1 d\u1ea1ng b\u00e0i c\u00f3 y\u1ebfu t\u1ed1 m\u1edbi l\u1ea1: t\u00edch h\u1ee3p ki\u1ebfn th\u1ee9c c\u01a1 h\u1ecdc (va ch\u1ea1m, ch\u1ecbu t\u00e1c d\u1ee5ng c\u1ee7a l\u1ef1c kh\u00f4ng \u0111\u1ed5i nh\u01b0 l\u1ef1c ma s\u00e1t \u2026 ) l\u1edbp 10, \u0111i\u1ec7n t\u1eeb v\u00e0 quang h\u00ecnh l\u1edbp 11\u2026<\/td>\n<\/tr>\n

1.3. Con l\u1eafc \u0111\u01a1n.<\/td>\n+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i to\u00e1n d\u1ec5 x\u00e1c \u0111\u1ecbnh chu k\u00ec, t\u1ed1c \u0111\u1ed9, n\u0103ng l\u01b0\u1ee3ng, l\u1ef1c c\u0103ng d\u00e2y c\u1ee7a con l\u1eafc, ch\u1ee7 y\u1ebfu \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c.<\/p>\n

+ B\u00e0i to\u00e1n x\u00e1c \u0111\u1ecbnh chu k\u00ec con l\u1eafc \u0111\u01a1n ch\u1ecbu t\u00e1c d\u1ee5ng c\u00e1c ngo\u1ea1i l\u1ef1c: qu\u00e1n t\u00ednh, l\u1ef1c \u0111i\u1ec7n, l\u1ef1c c\u1ea3n, l\u1ef1c \u0111\u1ea9y Acsimet\u2026<\/td>\n

+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i to\u00e1n kh\u00f3 x\u00e1c \u0111\u1ecbnh chu k\u00ec, t\u1ed1c \u0111\u1ed9, n\u0103ng l\u01b0\u1ee3ng, l\u1ef1c c\u0103ng d\u00e2y c\u1ee7a con l\u1eafc.<\/p>\n

+ B\u00e0i to\u00e1n li\u00ean quan \u0111\u1ebfn con l\u1eafc \u0111\u01a1n ch\u1ecbu t\u00e1c d\u1ee5ng c\u00e1c ngo\u1ea1i l\u1ef1c: qu\u00e1n t\u00ednh, l\u1ef1c \u0111i\u1ec7n, l\u1ef1c c\u1ea3n, l\u1ef1c \u0111\u1ea9y Acsimet\u2026<\/td>\n<\/tr>\n

1.4. T\u1ed5ng h\u1ee3p dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a<\/td>\n+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i d\u1ec5 x\u00e1c \u0111\u1ecbnh bi\u00ean \u0111\u1ed9, pha ban \u0111\u1ea7u dao \u0111\u1ed9ng t\u1ed5ng h\u1ee3p, dao \u0111\u1ed9ng th\u00e0nh ph\u1ea7n.<\/p>\n

+ B\u00e0i to\u00e1n li\u00ean quan kho\u1ea3ng c\u00e1ch hai v\u1eadt.<\/td>\n

+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i kh\u00f3 x\u00e1c \u0111\u1ecbnh bi\u00ean \u0111\u1ed9, pha ban \u0111\u1ea7u dao \u0111\u1ed9ng t\u1ed5ng h\u1ee3p, dao \u0111\u1ed9ng th\u00e0nh ph\u1ea7n.<\/p>\n

+ B\u00e0i to\u00e1n li\u00ean quan kho\u1ea3ng c\u00e1ch hai v\u1eadt.<\/td>\n<\/tr>\n

1.5. Dao \u0111\u1ed9ng t\u1eaft d\u1ea7n, dao \u0111\u1ed9ng c\u01b0\u1ee1ng b\u1ee9c, dao \u0111\u1ed9ng duy tr\u00ec<\/td>\n+ B\u00e0i to\u00e1n x\u00e1c \u0111\u1ecbnh t\u1ea7n s\u1ed1, bi\u00ean \u0111\u1ed9 dao \u0111\u1ed9ng c\u01b0\u1ee1ng b\u1ee9c khi c\u1ed9ng h\u01b0\u1edfng; khi kh\u00f4ng c\u00f3 c\u1ed9ng h\u01b0\u1edfng.<\/td>\n+ B\u00e0i to\u00e1n x\u00e1c \u0111\u1ecbnh t\u1ea7n s\u1ed1, bi\u00ean \u0111\u1ed9 dao \u0111\u1ed9ng c\u01b0\u1ee1ng b\u1ee9c khi c\u1ed9ng h\u01b0\u1edfng; khi kh\u00f4ng c\u00f3 c\u1ed9ng h\u01b0\u1edfng.<\/td>\n<\/tr>\n
S\u00f3ng c\u01a1<\/strong><\/td>\nKho\u1ea3ng 5-6 c\u00e2u, ki\u1ebfn th\u1ee9c kh\u00f4ng nhi\u1ec1u nh\u01b0ng c\u00f3 nhi\u1ec1u d\u1ea1ng b\u00e0i kh\u00f3 li\u00ean quan \u0111\u1ebfn ki\u1ebfn th\u1ee9c th\u1ef1c ti\u1ec5n, \u0111\u1ed3 th\u1ecb \u0111\u00f2i h\u1ecfi t\u01b0 duy cao trong nhi\u1ec1u b\u00e0i.<\/em><\/td>\n<\/tr>\n
2.1. S\u1ef1 truy\u1ec1n s\u00f3ng<\/td>\n+ L\u00ed thuy\u1ebft v\u00e0 d\u1ea1ng b\u00e0i to\u00e1n d\u1ec5 li\u00ean quan \u0111\u1ebfn \u0111\u1ed9 l\u1ec7ch pha hai \u0111i\u1ec3m dao \u0111\u1ed9ng b\u1ea5t k\u00ec tr\u00ean c\u00f9ng ph\u01b0\u01a1ng truy\u1ec1n s\u00f3ng.<\/td>\n+ L\u00ed thuy\u1ebft v\u00e0 d\u1ea1ng b\u00e0i to\u00e1n kh\u00f3 li\u00ean quan \u0111\u1ebfn hai \u0111i\u1ec3m dao \u0111\u1ed9ng b\u1ea5t k\u00ec tr\u00ean ph\u01b0\u01a1ng truy\u1ec1n s\u00f3ng: x\u00e1c \u0111\u1ecbnh bi\u00ean \u0111\u1ed9 s\u00f3ng, \u0111\u1ed9 l\u1ec7ch hai \u0111i\u1ec3m dao \u0111\u1ed9ng.<\/td>\n<\/tr>\n
2.2. Giao thoa s\u00f3ng c\u01a1<\/td>\n+ B\u00e0i to\u00e1n d\u1ec5 x\u00e1c \u0111\u1ecbnh s\u1ed1 \u0111i\u1ec3m dao \u0111\u1ed9ng c\u1ef1c \u0111\u1ea1i c\u1ef1c ti\u1ec3u tr\u00ean m\u1ed9t \u0111o\u1ea1n th\u1eb3ng, \u0111o\u1ea1n cong cho tr\u01b0\u1edbc.<\/td>\n+ B\u00e0i to\u00e1n kh\u00f3 x\u00e1c \u0111\u1ecbnh s\u1ed1 \u0111i\u1ec3m dao \u0111\u1ed9ng c\u1ef1c \u0111\u1ea1i c\u1ef1c ti\u1ec3u tr\u00ean m\u1ed9t \u0111o\u1ea1n th\u1eb3ng, \u0111o\u1ea1n cong cho tr\u01b0\u1edbc.<\/p>\n

+ B\u00e0i to\u00e1n kh\u00f3 li\u00ean quan \u0111\u1ebfn \u0111\u1ed9 l\u1ec7ch pha c\u00e1c \u0111i\u1ec3m tr\u00ean m\u1eb7t ph\u1eb3ng giao thoa.<\/td>\n<\/tr>\n

2.3.S\u00f3ng d\u1eebng<\/td>\n+ B\u00e0i to\u00e1n d\u1ec5 x\u00e1c \u0111\u1ecbnh s\u1ed1 \u0111i\u1ec3m b\u1ee5ng n\u00fat tr\u00ean d\u00e2y c\u00f3 s\u00f3ng d\u1eebng hai \u0111\u1ea7u l\u00e0 n\u00fat hay m\u1ed9t \u0111\u1ea7u n\u00fat m\u1ed9t \u0111\u1ea7u t\u1ef1 do.<\/td>\n+ B\u00e0i to\u00e1n kh\u00f3 x\u00e1c \u0111\u1ecbnh bi\u00ean \u0111\u1ed9 c\u1ee7a \u0111i\u1ec3m dao \u0111\u1ed9ng tr\u00ean m\u1eb7t ph\u1eb3ng giao thoa.<\/td>\n<\/tr>\n
2.4. S\u00f3ng \u00e2m<\/td>\n+ D\u1ea1ng b\u00e0i d\u1ec5 v\u1ec1 m\u1ed1i li\u00ean h\u1ec7 c\u01b0\u1eddng \u0111\u1ed9 \u00e2m, m\u1ee9c c\u01b0\u1eddng \u0111\u1ed9 \u00e2m, kho\u1ea3ng c\u00e1ch t\u1edbi ngu\u1ed3n c\u1ee7a m\u1ed9t \u0111i\u1ec3m trong m\u00f4i tr\u01b0\u1eddng truy\u1ec1n \u00e2m.<\/td>\n+ D\u1ea1ng b\u00e0i kh\u00f3 m\u1ed1i li\u00ean h\u1ec7 c\u01b0\u1eddng \u0111\u1ed9 \u00e2m, m\u1ee9c c\u01b0\u1eddng \u0111\u1ed9 \u00e2m, kho\u1ea3ng c\u00e1ch t\u1edbi ngu\u1ed3n c\u1ee7a m\u1ed9t \u0111i\u1ec3m trong m\u00f4i tr\u01b0\u1eddng truy\u1ec1n \u00e2m.<\/td>\n<\/tr>\n
D\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u<\/strong><\/td>\nKho\u1ea3ng 8-9 c\u00e2u, chi\u1ebfm nhi\u1ec1u \u0111i\u1ec3m nh\u1ea5t trong \u0111\u1ec1 thi, c\u0169ng l\u00e0 chuy\u00ean \u0111\u1ec1 c\u00f3 nhi\u1ec1u c\u00e2u h\u1ecfi kh\u00f3 nh\u1ea5t trong \u0111\u1ec1 thi. C\u00e1c c\u00e2u h\u1ecfi kh\u00f3 li\u00ean quan \u0111\u1ebfn k\u0129 n\u0103ng bi\u1ebfn \u0111\u1ed5i, t\u01b0 duy to\u00e1n l\u00ed d\u1ef1a quan h\u1ec7 c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng dao \u0111\u1ed9ng \u0111i\u1ec7n xoay chi\u1ec1u.<\/em><\/td>\n<\/tr>\n
3.1. M\u1ea1ch \u0111i\u1ec7n xoay chi\u1ec1u RLC<\/td>\n+ D\u1ea1ng b\u00e0i c\u01a1 b\u1ea3n \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c: t\u00ednh dung kh\u00e1ng, c\u1ea3m kh\u00e1ng, t\u1ed5ng tr\u1edf m\u1ea1ch, \u0111\u1ed9 l\u1ec7ch pha u, i khi \u0111\u00e3 bi\u1ebft c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng tr\u00ean \u2026<\/p>\n

+ D\u1ea1ng b\u00e0i c\u01a1 b\u1ea3n x\u00e1c \u0111\u1ecbnh h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t, c\u00f4ng su\u1ea5t c\u1ee7a m\u1ea1ch \u0111i\u1ec7n xoay chi\u1ec1u.<\/p>\n

+ C\u00e1c d\u1ea1ng b\u00e0i \u0111\u01a1n gi\u1ea3n v\u1ec1 c\u1ef1c tr\u1ecb trong m\u1ea1ch \u0111i\u1ec7n mang t\u00ednh \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c.<\/td>\n

+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i kh\u00f3 x\u00e1c \u0111\u1ecbnh c\u00e1c gi\u00e1 tr\u1ecb c\u1ef1c \u0111\u1ea1i, hi\u1ec7u d\u1ee5ng v\u00e0 \u0111\u1ed9 l\u1ec7ch pha c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng dao \u0111\u1ed9ng trong m\u1ea1ch \u0111i\u1ec7n.<\/p>\n

+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i kh\u00f3 v\u1ec1 x\u00e1c \u0111\u1ecbnh h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t, c\u00f4ng su\u1ea5t trong m\u1ea1ch RLC<\/p>\n

+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i kh\u00f3 v\u1ec1 hi\u1ec7n t\u01b0\u1ee3ng c\u1ed9ng h\u01b0\u1edfng \u0111i\u1ec7n.<\/p>\n

+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i v\u1ec1 c\u1ef1c tr\u1ecb trong m\u1ea1ch RLC khi R ho\u1eb7c L ho\u1eb7c C ho\u1eb7c \u03c9 thay \u0111\u1ed5i.<\/p>\n

+ D\u1ea1ng b\u00e0i v\u1ec1 c\u00e1c gi\u00e1 tr\u1ecb t\u1ee9c th\u1eddi trong m\u1ea1ch RLC.<\/p>\n

+ D\u1ea1ng b\u00e0i h\u1ed9p k\u00edn.<\/td>\n<\/tr>\n

3.2. M\u00e1y ph\u00e1t \u0111i\u1ec7n xoay chi\u1ec1u<\/td>\n+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i d\u1ec5 v\u1ec1 m\u00e1y ph\u00e1t \u0111i\u1ec7n xoay chi\u1ec1u m\u1ed9t pha nh\u01b0 x\u00e1c \u0111\u1ecbnh t\u1ea7n s\u1ed1 d\u00f2ng \u0111i\u1ec7n.<\/td>\n+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i kh\u00f3 v\u1ec1 m\u00e1y ph\u00e1t \u0111i\u1ec7n, \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n.<\/td>\n<\/tr>\n
3.3. M\u00e1y bi\u1ebfn \u00e1p, truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u0111i xa<\/td>\n+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i t\u1eadp d\u1ec5 v\u1ec1 m\u00e1y bi\u1ebfn \u00e1p, truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u0111i xa.<\/td>\n+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i t\u1eadp kh\u00f3 v\u1ec1 m\u00e1y bi\u1ebfn \u00e1p, truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng \u0111i xa.<\/td>\n<\/tr>\n
Dao \u0111\u1ed9ng \u0111i\u1ec7n t\u1eeb<\/strong><\/td>\nChi\u1ebfm kho\u1ea3ng 2-3 c\u00e2u, d\u1ea1ng b\u00e0i \u00edt h\u1ea7u h\u1ebft l\u00e0 c\u00e2u h\u1ecfi d\u1ec5 v\u00e0 trung b\u00ecnh, m\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi kh\u00f3, l\u1ea1 trong c\u00e1c n\u0103m li\u00ean quan \u0111\u1ebfn \u0111\u1ecba l\u00ed<\/em><\/td>\n<\/tr>\n
4.1. M\u1ea1ch dao \u0111\u1ed9ng LC<\/td>\n+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i d\u1ec5 x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb c\u1ef1c \u0111\u1ea1i c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng dao \u0111\u1ed9ng \u0111i\u1ec7n \u00e1p, \u0111i\u1ec7n t\u00edch m\u1ed9t b\u1ea3n t\u1ee5, c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n trong m\u1ea1ch.<\/p>\n

+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i d\u1ec5 x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb t\u1ee9c th\u1eddi c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng dao \u0111\u1ed9ng th\u00f4ng qua c\u00f4ng th\u1ee9c \u0111\u1ed9c l\u1eadp th\u1eddi gian c\u1ee7a c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng dao \u0111\u1ed9ng.<\/td>\n

+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i kh\u00f3 x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb c\u1ef1c \u0111\u1ea1i c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng dao \u0111\u1ed9ng \u0111i\u1ec7n \u00e1p, \u0111i\u1ec7n t\u00edch m\u1ed9t b\u1ea3n t\u1ee5, c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n trong m\u1ea1ch.<\/p>\n

+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i kh\u00f3 x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb t\u1ee9c th\u1eddi c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng dao \u0111\u1ed9ng th\u00f4ng qua c\u00f4ng th\u1ee9c \u0111\u1ed9c l\u1eadp th\u1eddi gian c\u1ee7a c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng dao \u0111\u1ed9ng.<\/p>\n

+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i kh\u00f3 v\u1ec1 n\u0103ng l\u01b0\u1ee3ng m\u1ea1ch dao \u0111\u1ed9ng LC.<\/td>\n<\/tr>\n

4.2. S\u00f3ng \u0110i\u1ec7n T\u1eeb<\/p>\n

 <\/td>\n

+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i \u0111\u1ecbnh t\u00ednh v\u1ec1 s\u00f3ng \u0111i\u1ec7n t\u1eeb.<\/p>\n

+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i t\u1eadp v\u1ec1 x\u00e1c \u0111\u1ecbnh t\u1ea7n s\u1ed1, chu k\u00ec, b\u01b0\u1edbc s\u00f3ng m\u00e0 m\u1ea1ch LC thu ph\u00e1t \u0111\u01b0\u1ee3c.<\/td>\n

<\/td>\n<\/tr>\n
4.3. Thu ph\u00e1t s\u00f3ng \u0111i\u1ec7n t\u1eeb<\/td>\n+ L\u00ed thuy\u1ebft v\u00e0 b\u00e0i t\u1eadp \u0111\u1ecbnh t\u00ednh v\u1ec1 s\u00f3ng v\u00f4 tuy\u1ebfn.<\/td>\n+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i t\u1eadp kh\u00f3 v\u1ec1 x\u00e1c \u0111\u1ecbnh t\u1ea7n s\u1ed1, chu k\u00ec, b\u01b0\u1edbc s\u00f3ng m\u00e0 m\u1ea1ch LC thu ph\u00e1t \u0111\u01b0\u1ee3c.<\/td>\n<\/tr>\n
S\u00f3ng \u00e1nh s\u00e1ng<\/strong><\/td>\nKho\u1ea3ng 6-7 c\u00e2u, h\u1ea7u h\u1ebft l\u00e0 c\u00e2u h\u1ecfi d\u1ec5, c\u00e1c c\u00e2u h\u1ecfi kh\u00f3 h\u01a1n t\u1eadp trung v\u00e0o c\u00e1c giao thoa \u00e1nh s\u00e1ng \u0111a s\u1eafc ho\u1eb7c giao thoa \u00e1nh s\u00e1ng tr\u1eafng.<\/em><\/td>\n<\/tr>\n
5.1. T\u00e1n s\u1eafc \u00e1nh s\u00e1ng<\/td>\n+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i d\u1ec5 v\u1ec1 t\u00e1n s\u1eafc \u00e1nh s\u00e1ng: t\u1ed1c \u0111\u1ed9, b\u01b0\u1edbc s\u00f3ng \u00e1nh s\u00e1ng truy\u1ec1n trong c\u00e1c m\u00f4i tr\u01b0\u1eddng.<\/td>\n+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i kh\u00f3 v\u1ec1 t\u00e1n s\u1eafc \u00e1nh s\u00e1ng: t\u1ed1c \u0111\u1ed9, b\u01b0\u1edbc s\u00f3ng \u00e1nh s\u00e1ng truy\u1ec1n trong c\u00e1c m\u00f4i tr\u01b0\u1eddng.<\/td>\n<\/tr>\n
5.2. Nhi\u1ec5u x\u1ea1 \u00e1nh s\u00e1ng. Giao thoa \u00e1nh s\u00e1ng<\/td>\n+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i v\u1ec1 giao thoa s\u00f3ng \u00e1nh s\u00e1ng: thay \u0111\u1ed5i \u0111i\u1ec1u ki\u1ec7n giao thoa, s\u1ef1 tr\u00f9ng v\u00e2n khi hai khe chi\u1ebfu \u0111\u1ed3ng th\u1eddi nhi\u1ec1u b\u1ee9c x\u1ea1\u2026<\/td>\n+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i v\u1ec1 giao thoa s\u00f3ng \u00e1nh s\u00e1ng: thay \u0111\u1ed5i \u0111i\u1ec1u ki\u1ec7n giao thoa, s\u1ef1 tr\u00f9ng v\u00e2n khi hai khe chi\u1ebfu \u0111\u1ed3ng th\u1eddi nhi\u1ec1u b\u1ee9c x\u1ea1\u2026<\/td>\n<\/tr>\n
5.3.C\u00e1c lo\u1ea1i quang ph\u1ed5. Tia h\u1ed3ng ngo\u1ea1i. Tia t\u1eed ngo\u1ea1i. Tia X. Thang s\u00f3ng \u0111i\u1ec7n t\u1eeb<\/td>\n+ L\u00ed thuy\u1ebft v\u00e0 d\u1ea1ng b\u00e0i \u0111\u1ecbnh t\u00ednh v\u1ec1 quang ph\u1ed5 v\u00e0 c\u00e1c tia.<\/td>\n<\/td>\n<\/tr>\n
L\u01b0\u1ee3ng t\u1eed \u00e1nh s\u00e1ng<\/strong><\/td>\nKho\u1ea3ng 4 c\u00e2u, c\u00e1c b\u00e0i t\u1eadp h\u1ea7u h\u1ebft l\u00e0 d\u1ec5 v\u00e0 trung b\u00ecnh, d\u1ea1ng b\u00e0i \u00edt<\/em><\/td>\n<\/tr>\n
6.1. Thuy\u1ebft l\u01b0\u1ee3ng t\u1eed \u00e1nh s\u00e1ng.<\/td>\n+ L\u00ed thuy\u1ebft v\u1ec1 thuy\u1ebft l\u01b0\u1ee3ng t\u1eed \u00e1nh s\u00e1ng v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i \u0111\u01a1n gi\u1ea3n t\u00ednh e, f, l, A ..<\/td>\n<\/td>\n<\/tr>\n
6.2. Hi\u1ec7n t\u01b0\u1ee3ng quang \u0111i\u1ec7n ngo\u00e0i, quang \u0111i\u1ec7n trong, quang \u2013 ph\u00e1t quang.<\/td>\n+ L\u00ed thuy\u1ebft v\u1ec1 m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng c\u1ee7a hi\u1ec7n t\u01b0\u1ee3ng quang \u0111i\u1ec7n trong, quang ph\u00e1t quang<\/p>\n

+ C\u00e1c d\u1ea1ng b\u00e0i v\u1ec1 gi\u1edbi h\u1ea1n quang \u0111i\u1ec7n kim lo\u1ea1i.<\/p>\n

+ C\u00e1c d\u1ea1ng b\u00e0i \u1ed1ng ph\u00e1t tia X.<\/td>\n

+ C\u00e1c d\u1ea1ng b\u00e0i kh\u00f3 v\u1ec1 gi\u1edbi h\u1ea1n quang \u0111i\u1ec7n kim lo\u1ea1i.<\/p>\n

+ C\u00e1c d\u1ea1ng b\u00e0i \u1ed1ng ph\u00e1t tia X.<\/td>\n<\/tr>\n

6.3. M\u1eabu nguy\u00ean t\u1eed Borh<\/td>\n+ D\u1ea1ng b\u00e0i t\u1eadp v\u1ec1 m\u1eabu nguy\u00ean t\u1eed Bo.<\/td>\n+ D\u1ea1ng b\u00e0i t\u1eadp kh\u00f3 v\u1ec1 m\u1eabu nguy\u00ean t\u1eed Bo, ch\u00fa \u00fd c\u00e1c d\u1ea1ng b\u00e0i c\u00f3 t\u00edch h\u1ee3p ki\u1ebfn th\u1ee9c \u0111i\u1ec7n tr\u01b0\u1eddng l\u1edbp 11<\/td>\n<\/tr>\n
H\u1ea1t nh\u00e2n nguy\u00ean t\u1eed<\/strong><\/td>\nKho\u1ea3ng 4-5 c\u00e2u, c\u00e1c c\u00e2u h\u1ecfi h\u1ea7u h\u1ebft l\u00e0 d\u1ec5 v\u00e0 trung b\u00ecnh, d\u1ea1ng b\u00e0i kh\u00f4ng nhi\u1ec1u.<\/em><\/td>\n<\/tr>\n
7.1. C\u1ea5u t\u1ea1o h\u1ea1t nh\u00e2n.<\/td>\n+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i v\u1ec1 c\u1ea5u t\u1ea1o h\u1ea1t nh\u00e2n.<\/td>\n<\/td>\n<\/tr>\n
7.2 Thuy\u1ebft t\u01b0\u01a1ng \u0111\u1ed1i<\/td>\n+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i v\u1ec1 thuy\u1ebft t\u01b0\u01a1ng \u0111\u1ed1i.<\/td>\n<\/td>\n<\/tr>\n
7.3. \u0110\u1ed9 h\u1ee5t kh\u1ed1i, n\u0103ng l\u01b0\u1ee3ng li\u00ean k\u1ebft trong h\u1ea1t nh\u00e2n<\/td>\n+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i v\u1ec1 \u0111\u1ed9 h\u1ee5t kh\u1ed1i v\u00e0 n\u0103ng l\u01b0\u1ee3ng li\u00ean k\u1ebft h\u1ea1t nh\u00e2n.<\/td>\n<\/td>\n<\/tr>\n
7.4. Ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n<\/td>\n+ C\u00e1c d\u1ea1ng b\u00e0i v\u1ec1 vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n, n\u0103ng l\u01b0\u1ee3ng ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n,\u2026<\/p>\n

+ C\u00e1c d\u1ea1ng b\u00e0i t\u00ednh n\u0103ng l\u01b0\u1ee3ng ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n.<\/td>\n

+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i t\u1eadp kh\u00f3 v\u1ec1 ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n: h\u1ea1t \u0111\u1ee9ng y\u00ean b\u1ecb ph\u00e2n r\u00e3 th\u00e0nh hai h\u1ea1t kh\u00e1c, h\u1ea1t A b\u1eafn v\u00e0o h\u1ea1t bia B sinh ra h\u1ea1t C v\u00e0 D, \u2026<\/td>\n<\/tr>\n
7.5. H\u1ea1t nh\u00e2n ph\u00f3ng x\u1ea1<\/td>\n+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i t\u1eadp x\u00e1c \u0111\u1ecbnh s\u1ed1 h\u1ea1t c\u00f2n l\u1ea1i v\u00e0 h\u1ea1t \u0111\u00e3 b\u1ecb ph\u00e2n r\u00e3.<\/td>\n+ L\u00ed thuy\u1ebft v\u00e0 c\u00e1c d\u1ea1ng b\u00e0i t\u1eadp kh\u00f3 x\u00e1c \u0111\u1ecbnh s\u1ed1 h\u1ea1t c\u00f2n l\u1ea1i v\u00e0 h\u1ea1t \u0111\u00e3 b\u1ecb ph\u00e2n r\u00e3.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

N\u0103m 2018, c\u1ea5u tr\u00fac \u0111\u1ec1 thi V\u1eadt L\u00fd c\u00f3 s\u1ef1 thay \u0111\u1ed5i, theo \u0111\u00f3 s\u1ebd bao g\u1ed3m c\u1ea3 ch\u01b0\u01a1ng tr\u00ecnh l\u1edbp 11 v\u00e0 l\u1edbp 12, th\u00ed sinh c\u1ea7n bi\u1ebft ph\u00e2n chia ki\u1ebfn th\u1ee9c \u0111\u1ec3 \u00f4n t\u1eadp nh\u1eb1m tr\u00e1nh b\u1ecf s\u00f3t n\u1ed9i dung. N\u0103m 2017 ki\u1ebfn th\u1ee9c \u0111\u1ec1 thi THPT Qu\u1ed1c Gia m\u00f4n V\u1eadt L\u00fd ch\u1ec9 […]<\/p>\n","protected":false},"author":3,"featured_media":28417,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[158],"tags":[],"yoast_head":"\nGi\u1edbi h\u1ea1n ki\u1ebfn th\u1ee9c V\u1eadt L\u00fd 12 trong k\u1ef3 thi tuy\u1ec3n sinh n\u0103m 2018<\/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\/gioi-han-kien-thuc-vat-ly-12-trong-ky-thi-tuyen-sinh-nam-2018\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Gi\u1edbi h\u1ea1n ki\u1ebfn th\u1ee9c V\u1eadt L\u00fd 12 trong k\u1ef3 thi tuy\u1ec3n sinh n\u0103m 2018\" \/>\n<meta property=\"og:description\" content=\"N\u0103m 2018, c\u1ea5u tr\u00fac \u0111\u1ec1 thi V\u1eadt L\u00fd c\u00f3 s\u1ef1 thay \u0111\u1ed5i, theo \u0111\u00f3 s\u1ebd bao g\u1ed3m c\u1ea3 ch\u01b0\u01a1ng tr\u00ecnh l\u1edbp 11 v\u00e0 l\u1edbp 12, th\u00ed sinh c\u1ea7n bi\u1ebft ph\u00e2n chia ki\u1ebfn th\u1ee9c \u0111\u1ec3 \u00f4n t\u1eadp nh\u1eb1m tr\u00e1nh b\u1ecf s\u00f3t n\u1ed9i dung. 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