B\u00e0i 1 (trang 229 sgk V\u1eadt L\u00ed 12 n\u00e2ng cao):<\/b>\u00a0Theo gi\u1ea3 thuy\u1ebft l\u01b0\u1ee3ng t\u1eeb c\u1ee7a Plang th\u00ec n\u0103ng l\u01b0\u1ee3ng c\u1ee7a.<\/span><\/p>\nA. M\u1ecdi electron.<\/p>\n
B. M\u1ecdi nguy\u00ean t\u1eed.<\/p>\n
C. Ph\u00e2n t\u1eed m\u1ecdi ch\u1ea5t.<\/p>\n
D. M\u1ed9t ch\u00f9m s\u00e1ng \u0111\u01a1n s\u1eafc ph\u1ea3i lu\u00f4n lu\u00f4n b\u1eb1ng m\u1ed9t s\u1ed1 nguy\u00ean l\u1ea7n l\u01b0\u1ee3ng t\u1eed n\u0103ng l\u01b0\u1ee3ng.<\/p>\n
L\u1eddi gi\u1ea3i:<\/b><\/p>\n
Ch\u1ecdn D<\/p>\n
Theo gi\u1ea3 thuy\u1ebft l\u01b0\u1ee3ng t\u1eed c\u1ee7a Pl\u0103ng th\u00ec n\u0103ng l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t ch\u00f9m s\u00e1ng \u0111\u01a1n s\u1eafc ph\u1ea3i lu\u00f4n lu\u00f4n b\u1eb1ng m\u1ed9t s\u1ed1 nguy\u00ean l\u1ea7n l\u01b0\u1ee3ng t\u1eed n\u0103ng l\u01b0\u1ee3ng.<\/p>\n
B\u00e0i 2 (trang 229 sgk V\u1eadt L\u00ed 12 n\u00e2ng cao):<\/b>\u00a0Theo thuy\u1ebft photon c\u1ee7a Anh \u2013 xtanh, th\u00ec n\u0103ng l\u01b0\u1ee3ng<\/span><\/p>\nA. C\u1ee7a m\u1ecdi photon \u0111\u1ec1u b\u1eb1ng nhau.<\/p>\n
B. C\u1ee7a m\u1ed9t photon b\u1eb1ng m\u1ed9t l\u01b0\u1ee3ng t\u1eed n\u0103ng l\u01b0\u1ee3ng.<\/p>\n
C. Gi\u1ea3m d\u1ea7n, khi photon c\u00e0ng r\u1eddi xa ngu\u1ed3n.<\/p>\n
D. C\u1ee7a photon kh\u00f4ng ph\u1ee5 thu\u1ed9c b\u01b0\u1edbc s\u00f3ng.<\/p>\n
L\u1eddi gi\u1ea3i:<\/b><\/p>\n
Ch\u1ecdn B.<\/p>\n
B\u00e0i 3 (trang 229 sgk V\u1eadt L\u00ed 12 n\u00e2ng cao):<\/b>\u00a0C\u00f4ng th\u1ee9c Anh \u2013 xtanh v\u1ec1 hi\u1ec7n t\u01b0\u1ee3ng quang \u0111i\u1ec7n l\u00e0:<\/span><\/p>\n![\"\"](\"https:\/\/lop12.edu.vn\/wp-content\/uploads\/2018\/04\/1-12.png\")
<\/p>\n
L\u1eddi gi\u1ea3i:<\/b><\/p>\n
Ch\u1ecdn B.<\/p>\n
\n
\n
B\u00e0i 4 (trang 229 sgk V\u1eadt L\u00ed 12 n\u00e2ng cao):<\/b>\u00a0Chi\u1ebfu m\u1ed9t ch\u00f9m \u00e1nh s\u00e1ng c\u00f3 b\u01b0\u1edbc s\u00f3ng 400 nm v\u00e0o catot b\u1eb1ng natri c\u1ee7a m\u1ed9t t\u1ebf b\u00e0o quang \u0111i\u1ec7n. bi\u1ebft gi\u1edbi h\u1ea1n quang \u0111i\u1ec7n c\u1ee7a natri l\u00e0 0,50 \u03bcm, h\u00e3y t\u00ednh v\u1eadn t\u1ed1c ban \u0111\u1ea7u c\u1ef1c \u0111\u1ea1i c\u1ee7a c\u00e1c electron quang \u0111i\u1ec7n.<\/span><\/p>\nL\u1eddi gi\u1ea3i:<\/b><\/p>\n
\u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c Anh \u2013 xtanh:<\/p>\n
![\"\"](\"https:\/\/lop12.edu.vn\/wp-content\/uploads\/2018\/04\/1-13.png\")
<\/p>\n
T\u1eeb \u0111\u00f3 r\u00fat ra:<\/p>\n
![\"\"](\"https:\/\/lop12.edu.vn\/wp-content\/uploads\/2018\/04\/2-3.png\")
<\/p>\n
Thay s\u1ed1 ta \u0111\u01b0\u1ee3c : v0 max<\/sub>\u00a0= 4,7.105<\/sup>\u00a0m\/s.<\/p>\n<\/div>\n<\/div>\n\n
<\/div>\n<\/div>\n
\n
<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
C\u00c2U H\u1eceI C\u00e2u 1 (trang 229 sgk V\u1eadt L\u00ed 12 n\u00e2ng cao):\u00a0Tr\u00ecnh b\u00e0y n\u1ed9i dung c\u1ee7a thuy\u1ebft l\u01b0\u1ee3ng t\u1eed \u00e1nh s\u00e1ng. L\u1eddi gi\u1ea3i: Xem m\u1ee5c 1 ph\u1ea7n KTCB. C\u00e2u 2 (trang 229 sgk V\u1eadt L\u00ed 12 n\u00e2ng cao):\u00a0Gi\u1ea3i th\u00edch c\u00e1c \u0111\u1ecbnh lu\u1eadt quang \u0111i\u1ec7n b\u1eb1ng thuy\u1ebft l\u01b0\u1ee3ng t\u1eed \u00e1nh s\u00e1ng. L\u1eddi gi\u1ea3i: Xem m\u1ee5c 2 […]<\/p>\n","protected":false},"author":3,"featured_media":25020,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[1304],"tags":[1432,1431],"yoast_head":"\n
Ch\u01b0\u01a1ng 7 - B\u00e0i 44: Thuy\u1ebft l\u01b0\u1ee3ng t\u1eed \u00e1nh s\u00e1ng. L\u01b0\u1ee1ng t\u00ednh s\u00f3ng - h\u1ea1t c\u1ee7a \u00e1nh s\u00e1ng<\/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-7-bai-44-thuyet-luong-tu-anh-sang-luong-tinh-song-hat-cua-anh-sang\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ch\u01b0\u01a1ng 7 - B\u00e0i 44: Thuy\u1ebft l\u01b0\u1ee3ng t\u1eed \u00e1nh s\u00e1ng. L\u01b0\u1ee1ng t\u00ednh s\u00f3ng - h\u1ea1t c\u1ee7a \u00e1nh s\u00e1ng\" \/>\n<meta property=\"og:description\" content=\"C\u00c2U H\u1eceI C\u00e2u 1 (trang 229 sgk V\u1eadt L\u00ed 12 n\u00e2ng cao):\u00a0Tr\u00ecnh b\u00e0y n\u1ed9i dung c\u1ee7a thuy\u1ebft l\u01b0\u1ee3ng t\u1eed \u00e1nh s\u00e1ng. 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