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{"id":24728,"date":"2018-03-30T15:42:18","date_gmt":"2018-03-30T08:42:18","guid":{"rendered":"https:\/\/lop12.edu.vn\/?p=24728"},"modified":"2018-03-30T15:42:18","modified_gmt":"2018-03-30T08:42:18","slug":"chuong-5-bai-27-tia-hong-ngoai-va-tia-tu-ngoai","status":"publish","type":"post","link":"https:\/\/lop12.edu.vn\/chuong-5-bai-27-tia-hong-ngoai-va-tia-tu-ngoai\/","title":{"rendered":"Ch\u01b0\u01a1ng 5 – B\u00e0i 27: Tia h\u1ed3ng ngo\u1ea1i v\u00e0 tia t\u1eed ngo\u1ea1i"},"content":{"rendered":"

B\u00e0i 1 (trang 142 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0C\u0103n c\u1ee9 v\u00e0o \u0111\u00e2u m\u00e0 ta kh\u1eb3ng \u0111\u1ecbnh \u0111\u01b0\u1ee3c r\u1eb1ng tia h\u1ed3ng ngo\u1ea1i v\u00e0 tia t\u1eed ngo\u1ea1i c\u00f3 c\u00f9ng b\u1ea3n ch\u1ea5t v\u1edbi \u00e1nh s\u00e1ng th\u00f4ng th\u01b0\u1eddng?<\/span><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

Tia h\u1ed3ng ngo\u1ea1i, t\u1eed ngo\u1ea1i c\u00f3 c\u00f9ng b\u1ea3n ch\u1ea5t v\u1edbi \u00e1nh s\u00e1ng th\u00f4ng th\u01b0\u1eddng v\u00ec c\u1ea3 ba lo\u1ea1i tia c\u00f9ng ph\u00e1t ra t\u1eeb m\u1ed9t ngu\u1ed3n ph\u00e1t v\u00e0 \u0111\u1ec1u \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n dao c\u00f9ng m\u1ed9t d\u1ee5ng c\u1ee5 l\u00e0 c\u1eb7p nhi\u1ec7t \u0111i\u1ec7n.<\/p>\n

B\u00e0i 2 (trang 142 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0D\u1ef1a v\u00e0o th\u00ed nghi\u1ec7m \u1edf h\u00ecnh 27.1 (SGK) c\u00f3 th\u1ec3 k\u1ebft lu\u1eadn g\u00ec v\u1ec1 b\u01b0\u1edbc s\u00f3ng c\u1ee7a tia h\u1ed3ng ngo\u1ea1i v\u00e0 tia t\u1eed ngo\u1ea1i?<\/span><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

D\u1ef1a v\u00e0o th\u00ed nghi\u1ec7m \u1edf h\u00ecnh (27.1) SGK, ta nh\u1eadn th\u1ea5y: Tia h\u1ed3ng ngo\u1ea1i b\u1ecb l\u1ec7ch \u00edt h\u01a1n tia \u0111\u1ecf n\u00ean b\u01b0\u1edbc s\u00f3ng c\u1ee7a tia h\u1ed3ng ngo\u1ea1i l\u1edbn h\u01a1n b\u01b0\u1edbc s\u00f3ng c\u1ee7a \u00e1nh s\u00e1ng \u0111\u1ecf. C\u00f2n tia t\u1eed ngo\u1ea1i b\u1ecb l\u1ec7ch nhi\u1ec1u h\u01a1n tia t\u00edm n\u00ean b\u01b0\u1edbc s\u00f3ng c\u1ee7a tia t\u1eed ngo\u1ea1i nh\u1ecf h\u01a1n b\u01b0\u1edbc s\u00f3ng c\u1ee7a \u00e1nh s\u00e1ng t\u00edm.<\/p>\n

B\u00e0i 3 (trang 142 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0M\u1ed9t c\u00e1i ph\u00edch t\u1ed1t, ch\u1ee9a \u0111\u1ea7y n\u01b0\u1edbc s\u00f4i c\u00f3 ph\u1ea3i l\u00e0 m\u1ed9t ngu\u1ed3n h\u1ed3ng ngo\u1ea1i kh\u00f4ng? M\u1ed9t c\u00e1i \u1ea5m tr\u00e0 ch\u1ee9a \u0111\u1ea7y n\u01b0\u1edbc s\u00f4i th\u00ec sao?<\/span><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

M\u1ed9t c\u00e1i ph\u00edch t\u1ed1t ch\u1ee9a \u0111\u1ea7y n\u01b0\u1edbc s\u00f4i th\u00ec b\u00ean trong ph\u00edch n\u01b0\u1edbc c\u00f3 nhi\u1ec7t \u0111\u1ed9 100o<\/sup>C, c\u00f2n v\u1ecf ph\u00edch \u1edf b\u00ean ngo\u00e0i c\u00f3 m\u1ed9t nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng n\u00ean \u0111\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 ngu\u1ed3n h\u1ed3ng ngo\u1ea1i.<\/p>\n

M\u1ed9t \u1ea5m tr\u00e0 ch\u1ee9a \u0111\u1ea7y n\u01b0\u1edbc s\u00f4i th\u00ec d\u00e2y l\u00e0 ngu\u1ed3n h\u1ed3ng ngo\u1ea1i.<\/p>\n

B\u00e0i 4 (trang 142 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0D\u00e2y t\u00f3c b\u00f3ng \u0111\u00e8n \u0111i\u1ec7n th\u01b0\u1eddng c\u00f3 nhi\u1ec7t \u0111\u1ed9 ch\u1eebng 2200o<\/sup>C. T\u1ea1i sao ng\u1ed3i trong bu\u1ed3ng chi\u1ebfu \u00e1nh s\u00e1ng b\u1eb1ng \u0111\u00e8n d\u00e2y t\u00f3c, ta ho\u00e0n to\u00e0n kh\u00f4ng b\u1ecb nguy hi\u1ec3m v\u00ec t\u00e1c d\u1ee5ng c\u1ee7a tia t\u1eed ngo\u1ea1i?<\/span><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

D\u00e2y t\u00f3c b\u00f3ng \u0111\u00e8n c\u00f3 nhi\u1ec7t \u0111\u1ed9 kho\u1ea3ng 2200o<\/sup>C th\u00ec ph\u00e1t ra tia t\u1eed ngo\u1ea1i. Nh\u1edd b\u00f3ng \u0111\u00e8n l\u00e0 th\u1ee7y tinh h\u1ea5p th\u1ee5 m\u1ea1nh tia t\u1eed ngo\u1ea1i, n\u00ean ta ho\u00e0n to\u00e0n kh\u00f4ng b\u1ecb nguy hi\u1ec3m v\u00ec t\u00e1c d\u1ee5ng c\u1ee7a tia t\u1eed ngo\u1ea1i.<\/p>\n

B\u00e0i 5 (trang 142 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0\u00c1nh s\u00e1ng \u0111\u00e8n h\u01a1i th\u1ee7y ng\u00e2n \u0111\u1ec3 chi\u1ebfu s\u00e1ng c\u00e1c \u0111\u01b0\u1eddng ph\u1ed1 c\u00f3 t\u00e1c d\u1ee5ng di\u1ec7t khu\u1ea9n kh\u00f4ng? T\u1ea1i sao?<\/span><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

\u0110\u00e8n h\u01a1i th\u1ee7y ng\u00e2n \u0111\u1ec3 chi\u1ebfu s\u00e1ng c\u00e1c \u0111\u01b0\u1eddng ph\u1ed1 kh\u00f4ng c\u00f3 t\u00e1c d\u1ee5ng di\u1ec7t khu\u1ea9n v\u00ec \u0111\u00e8n \u0111\u1eb7t trong v\u1ecf th\u1ee7y tinh n\u00ean h\u1ea7u h\u1ebft tia t\u1eed ngo\u1ea1i b\u1ecb th\u1ee7y tinh h\u1ea5p th\u1ee5 h\u1ebft.<\/p>\n

B\u00e0i 6 (trang 142 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0Ch\u1ecdn c\u00e2u \u0111\u00fang.<\/span><\/p>\n

Tia h\u1ed3ng ngo\u1ea1i c\u00f3:<\/p>\n

A. b\u01b0\u1edbc s\u00f3ng l\u1edbn h\u01a1n so v\u1edbi \u00e1nh s\u00e1ng nh\u00ecn th\u1ea5y.<\/p>\n

B. b\u01b0\u1edbc s\u00f3ng nh\u1ecf h\u01a1n so v\u1edbi \u00e1nh s\u00e1ng nh\u00ecn th\u1ea5y.<\/p>\n

C. b\u01b0\u1edbc s\u00f3ng nh\u1ecf h\u01a1n so v\u1edbi tia t\u1eed ngo\u1ea1i.<\/p>\n

D. t\u1ea7n s\u1ed1 l\u1edbn h\u01a1n so v\u1edbi tia t\u1eed ngo\u1ea1i.<\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

Ch\u1ecdn \u0111\u00e1p \u00e1n A.<\/p>\n

\n
\n

B\u00e0i 7 (trang 142 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0Ch\u1ecdn c\u00e2u \u0111\u00fang.<\/span><\/p>\n

Tia t\u1eed ngo\u1ea1i:<\/p>\n

A. kh\u00f4ng c\u00f3 t\u00e1c d\u1ee5ng nhi\u1ec7t.<\/p>\n

B. c\u0169ng c\u00f3 t\u00e1c d\u1ee5ng nhi\u1ec7t.<\/p>\n

C. kh\u00f4ng l\u00e0m \u0111en phim \u1ea3nh.<\/p>\n

D. l\u00e0m \u0111en phim \u1ea3nh, nh\u01b0ng kh\u00f4ng l\u00e0m \u0111en m\u1ea1nh b\u1eb1ng \u00e1nh s\u00e1ng nh\u00ecn th\u1ea5y.<\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

Ch\u1ecdn \u0111\u00e1p \u00e1n B.<\/p>\n

B\u00e0i 8 (trang 142 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0Gi\u1ea3 s\u1eed ta l\u00e0m th\u00ed nghi\u1ec7m Y \u2013 \u00e2ng v\u1edbi hai khe c\u00e1ch nhau m\u1ed9t kho\u1ea3ng a = 2mm, v\u00e0 m\u00e0n quan s\u00e1t c\u00e1ch hai khe D = 1,2m. D\u1ecbch chuy\u1ec3n m\u1ed9t m\u1ed1i h\u00e0n c\u1ee7a c\u1eb7p nhi\u1ec7t \u0111i\u1ec7n tr\u00ean m\u00e0n D theo m\u1ed9t \u0111\u01b0\u1eddng vu\u00f4ng g\u00f3c v\u1edbi hai khe, th\u00ec th\u1ea5y c\u1ee9 sau 0,5mm th\u00ec kim \u0111i\u1ec7n k\u1ebf l\u1ea1i l\u1ec7ch nhi\u1ec1u nh\u1ea5t. T\u00ednh b\u01b0\u1edbc s\u00f3ng c\u1ee7a b\u1ee9c x\u1ea1.<\/span><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

Khi kim \u0111i\u1ec7n k\u1ebf b\u1ecb l\u1ec7ch nhi\u1ec1u nh\u1ea5t th\u00ec t\u1ea1i \u0111\u00f3 l\u00e0 v\u00e2n s\u00e1ng. C\u1ee9 sau 0,5mm th\u00ec kim \u0111i\u1ec7n k\u1ebf l\u1ea1i b\u1ecb l\u1ec7ch nhi\u1ec1u nh\u1ea5t n\u00ean kho\u1ea3ng v\u00e2n i = 0,5mm<\/p>\n

B\u01b0\u1edbc s\u00f3ng c\u1ee7a b\u1ee9c x\u1ea1:<\/p>\n

\"\"<\/p>\n

B\u00e0i 9 (trang 142 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0Trong m\u1ed9t th\u00ed nghi\u1ec7m Y \u2013 \u00e2ng, hai khe F1<\/sub>, F2<\/sub>\u00a0c\u00e1ch nhau m\u1ed9t kho\u1ea3ng a = 0,8 mm, khe F \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng b\u1eb1ng b\u1ee9c x\u1ea1 t\u1eed ngo\u1ea1i, b\u01b0\u1edbc s\u00f3ng 360nm. M\u1ed9t t\u1ea5m gi\u1ea5y \u1ea3nh \u0111\u1eb7t song song v\u1edbi hai khe, c\u00e1ch ch\u00fang 1,2m. H\u1ecfi sau khi tr\u00e1ng tr\u00ean gi\u1ea5y hi\u1ec7n l\u00ean h\u00ecnh g\u00ec? T\u00ednh kho\u1ea3ng c\u00e1ch gi\u1eefa hai v\u1ea1ch \u0111en tr\u00ean gi\u1ea5y.<\/span><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

Ta ch\u1ee5p \u0111\u01b0\u1ee3c \u1ea3nh c\u1ee7a h\u1ec7 v\u00e2n giao thoa, g\u1ed3m c\u00e1c v\u1ea1ch th\u1eb3ng \u0111en v\u00e0 tr\u1eafng song song, xen k\u1ebd v\u00e0 c\u00e1ch nhau \u0111\u1ec1u \u0111\u1eb7n, v\u1ea1ch \u0111en \u1ee9ng v\u1edbi v\u00e2n s\u00e1ng, kho\u1ea3ng c\u00e1ch gi\u1eefa 2 v\u1ea1ch \u0111en l\u00e0 kho\u1ea3ng v\u00e2n i<\/p>\n

\"\"<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

B\u00e0i 1 (trang 142 SGK V\u1eadt L\u00fd 12):\u00a0C\u0103n c\u1ee9 v\u00e0o \u0111\u00e2u m\u00e0 ta kh\u1eb3ng \u0111\u1ecbnh \u0111\u01b0\u1ee3c r\u1eb1ng tia h\u1ed3ng ngo\u1ea1i v\u00e0 tia t\u1eed ngo\u1ea1i c\u00f3 c\u00f9ng b\u1ea3n ch\u1ea5t v\u1edbi \u00e1nh s\u00e1ng th\u00f4ng th\u01b0\u1eddng? L\u1eddi gi\u1ea3i: Tia h\u1ed3ng ngo\u1ea1i, t\u1eed ngo\u1ea1i c\u00f3 c\u00f9ng b\u1ea3n ch\u1ea5t v\u1edbi \u00e1nh s\u00e1ng th\u00f4ng th\u01b0\u1eddng v\u00ec c\u1ea3 ba lo\u1ea1i tia c\u00f9ng […]<\/p>\n","protected":false},"author":3,"featured_media":24729,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[1303],"tags":[1428,1427],"yoast_head":"\nCh\u01b0\u01a1ng 5 - B\u00e0i 27: Tia h\u1ed3ng ngo\u1ea1i v\u00e0 tia t\u1eed ngo\u1ea1i<\/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\/chuong-5-bai-27-tia-hong-ngoai-va-tia-tu-ngoai\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ch\u01b0\u01a1ng 5 - B\u00e0i 27: Tia h\u1ed3ng ngo\u1ea1i v\u00e0 tia t\u1eed ngo\u1ea1i\" \/>\n<meta property=\"og:description\" content=\"B\u00e0i 1 (trang 142 SGK V\u1eadt L\u00fd 12):\u00a0C\u0103n c\u1ee9 v\u00e0o \u0111\u00e2u m\u00e0 ta kh\u1eb3ng \u0111\u1ecbnh \u0111\u01b0\u1ee3c r\u1eb1ng tia h\u1ed3ng ngo\u1ea1i v\u00e0 tia t\u1eed ngo\u1ea1i c\u00f3 c\u00f9ng b\u1ea3n ch\u1ea5t v\u1edbi \u00e1nh s\u00e1ng th\u00f4ng th\u01b0\u1eddng? 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