C\u00e2u 1:<\/b>\u00a0Ch\u1ecdn ph\u00e1t bi\u1ec3u \u0111\u00fang v\u1ec1 hi\u1ec7n t\u01b0\u1ee3ng quang \u0111i\u1ec7n trong<\/p>\n
A. C\u00f3 b\u01b0\u1edbc s\u00f3ng gi\u1edbi h\u1ea1n nh\u1ecf h\u01a1n b\u01b0\u1edbc s\u00f3ng gi\u1edbi h\u1ea1n c\u1ee7a hi\u1ec7n t\u01b0\u1ee3ng quang \u0111i\u1ec7n ngo\u00e0i.<\/p>\n
B. \u00c1nh s\u00e1ng k\u00edch th\u00edch ph\u1ea3i l\u00e0 \u00e1nh s\u00e1ng t\u1eed ngo\u1ea1i.<\/p>\n
C. C\u00f3 th\u1ec3 x\u1ea3y ra khi \u0111\u01b0\u1ee3c chi\u1ebfu b\u1eb1ng b\u1ee9c x\u1ea1 h\u1ed3ng ngo\u1ea1i.<\/p>\n
D.C\u00f3 th\u1ec3 x\u1ea3y ra \u0111\u1ed1i v\u1edbi c\u1ea3 kim lo\u1ea1i.<\/p>\n
C\u00e2u 2:<\/b>\u00a0Ch\u1ecdn ph\u00e1t bi\u1ec3u \u0111\u00fang v\u1ec1 hi\u1ec7n t\u01b0\u1ee3ng quang d\u1eabn<\/p>\n
A. Trong hi\u1ec7n t\u01b0\u1ee3ng quang d\u1eabn, c\u00e1c \u00ealectron b\u1ecb b\u1ee9t ra kho\u1ec9 kh\u1ed1i kim lo\u1ea1i khi \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng th\u00edch h\u1ee3p.<\/p>\n
B. Trong hi\u1ec7n t\u01b0\u1ee3ng quang d\u1eabn, \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n c\u1ee7a kh\u1ed1i ch\u1ea5t b\u00e1n d\u1eabn gi\u1ea3m khi \u0111\u01b0\u1ee3c chi\u1ebfu \u00e1nh s\u00e1ng th\u00edch h\u1ee3p.<\/p>\n
C. Trong hi\u1ec7n t\u01b0\u1ee3ng quang d\u1eabn, \u0111i\u1ec7n tr\u1edf c\u1ee7a kh\u1ed1i ch\u1ea5t b\u00e1n d\u1eabn gi\u1ea3m khi \u0111\u01b0\u1ee3c chi\u1ebfu \u00e1nh s\u00e1ng th\u00edch h\u1ee3p.<\/p>\n
D.Hi\u1ec7n t\u01b0\u1ee3ng quang d\u1eabn c\u00f3 th\u1ec3 x\u1ea3y ra \u0111\u1ed1i v\u1edbi c\u1ea3 kim lo\u1ea1i v\u00e0 b\u00e1n d\u1eabn<\/p>\n
C\u00e2u 3:<\/b>\u00a0Quang \u0111i\u1ec7n tr\u1edf l\u00e0<\/p>\n
A. \u0111i\u1ec7n tr\u1edf c\u00f3 gi\u00e1 tr\u1ecb b\u1eb1ng 0 khi \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng.<\/p>\n
B. \u0111i\u1ec7n tr\u1edf c\u00f3 gi\u00e1 tr\u1ecb kh\u00f4ng \u0111\u1ed5i khi thay \u0111\u1ed5i b\u01b0\u1edbc s\u00f3ng \u00e1nh s\u00e1ng chi\u1ebfu t\u1edbi.<\/p>\n
C. \u0111i\u1ec7n tr\u1edf c\u00f3 gi\u00e1 tr\u1ecb gi\u1ea3m khi \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng.<\/p>\n
D.\u0111i\u1ec7n tr\u1edf c\u00f3 gi\u00e1 tr\u1ecb t\u0103ng khi \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng.<\/p>\n
C\u00e2u 4:<\/b>\u00a0Ch\u1ecdn ph\u00e1t bi\u1ec3u \u0111\u00fang.<\/p>\n
A. Ch\u1ea5t quang d\u1eabn l\u00e0 nh\u1eefng kim lo\u1ea1i d\u1eabn \u0111i\u1ec7n t\u1ed1t khi c\u00f3 \u00e1nh s\u00e1ng th\u00edch h\u1ee3p chi\u1ebfu v\u00e0o.<\/p>\n
B. Trong hi\u1ec7n t\u01b0\u1eddng quang \u0111i\u1ec7n trong, ch\u1ec9 c\u00f3 c\u00e1c \u00ealectron d\u00e2n tham gia v\u00e0o qu\u00e1 tr\u00ecnh d\u1eabn \u0111i\u1ec7n.<\/p>\n
C. \u0110i\u1ec7n tr\u1edf su\u1ea5t c\u1ee7a ch\u1ea5t quang d\u1eabn t\u0103ng khi \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng th\u00edch h\u1ee3p.<\/p>\n
D.Pin quang \u0111i\u1ec7n bi\u1ebfn \u0111\u1ed5i tr\u1ef1c ti\u1ebfp quang n\u0103ng th\u00e0nh \u0111i\u1ec7n n\u0103ng.<\/p>\n
C\u00e2u 5:<\/b>\u00a0T\u00ecm ph\u00e1t bi\u1ec3u sai<\/p>\n
A. Hi\u1ec7n t\u01b0\u1ee3ng \u0111i\u1ec7n tr\u1edf su\u1ea5t c\u1ee7a ch\u1ea5t b\u00e1n d\u1eabn gi\u1ea3m m\u1ea1nh khi c\u00f3 \u00e1nh s\u00e1ng th\u00edch h\u1ee3p chi\u1ebfu v\u00e0o n\u00f3 l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng quang d\u1eabn.<\/p>\n
B. D\u00f9ng thuy\u1ebft s\u00f3ng \u00e1nh s\u00e1ng ta c\u00f3 th\u1ec3 gi\u1ea3i th\u00edch \u0111\u01b0\u1ee3c s\u1ef1 t\u1ea1o th\u00e0nh quang ph\u1ed5 v\u1ea1ch c\u1ee7a nguy\u00ean t\u1eed hy\u0111r\u00f4.<\/p>\n
C. Gi\u1edbi h\u1ea1n quang \u0111i\u1ec7n trong th\u01b0\u1eddng l\u1edbn h\u01a1n gi\u1edbi h\u1ea1n quang \u0111i\u1ec7n ngo\u00e0i.<\/p>\n
D.D\u00f9ng thuy\u1ebft l\u01b0\u1ee3ng t\u1eed v\u1ec1 \u00e1nh s\u00e1ng c\u00f3 th\u1ec3 gi\u1ea3i th\u00edch \u0111\u01b0\u1ee3c nguy\u00ean t\u1eafc ho\u1ea1t \u0111\u1ed9ng c\u1ee7a oin quang \u0111i\u1ec7n.<\/p>\n
C\u00e2u 6:<\/b>\u00a0D\u1ee5ng c\u1ee5 c\u00f3 nguy\u00ean t\u1eafc ho\u1ea1t \u0111\u1ed9ng d\u1ef1a v\u00e0o t\u00e1c d\u1ee5ng c\u1ee7a l\u1edbp ti\u1ebfp x\u00fac p \u2013 n l\u00e0<\/p>\n
A. t\u1ebf b\u00e0o quang \u0111i\u1ec7n<\/p>\n
B. pin nhi\u1ec7t \u0111i\u1ec7n<\/p>\n
C. quang \u0111i\u1ec7n tr\u1edf<\/p>\n
D.\u0111i\u00f4t \u0111i\u1ec7n t\u1eed<\/p>\n
C\u00e2u 7:<\/b>\u00a0Pin quang \u0111i\u1ec7n<\/p>\n
A. l\u00e0 d\u1ee5ng c\u1ee5 bi\u1ebfn \u0111\u1ed5i tr\u1ef1c ti\u1ebfp quang n\u0103ng th\u00e0nh \u0111i\u1ec7n n\u0103ng.<\/p>\n
B. l\u00e0 d\u1ee5ng c\u1ee5 bi\u1ebfn nhi\u1ec7t n\u0103ng th\u00e0nh \u0111i\u1ec7n n\u0103ng.<\/p>\n
C. ho\u1ea1t \u0111\u1ed9ng d\u1ef1a v\u00e0o hi\u1ec7n t\u01b0\u1ee3ng quang \u0111i\u1ec7n ngo\u00e0i.<\/p>\n
D.l\u00e0 d\u1ee5ng c\u1ee5 c\u00f3 \u0111i\u1ec7n tr\u1edf t\u0103ng khi \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng.<\/p>\n
H\u01b0\u1edbng d\u1eabn gi\u1ea3i v\u00e0 \u0111\u00e1p \u00e1n<\/b><\/p>\n C\u00e2u 1:\u00a0Ch\u1ecdn ph\u00e1t bi\u1ec3u \u0111\u00fang v\u1ec1 hi\u1ec7n t\u01b0\u1ee3ng quang \u0111i\u1ec7n trong A. C\u00f3 b\u01b0\u1edbc s\u00f3ng gi\u1edbi h\u1ea1n nh\u1ecf h\u01a1n b\u01b0\u1edbc s\u00f3ng gi\u1edbi h\u1ea1n c\u1ee7a hi\u1ec7n t\u01b0\u1ee3ng quang \u0111i\u1ec7n ngo\u00e0i. B. \u00c1nh s\u00e1ng k\u00edch th\u00edch ph\u1ea3i l\u00e0 \u00e1nh s\u00e1ng t\u1eed ngo\u1ea1i. C. C\u00f3 th\u1ec3 x\u1ea3y ra khi \u0111\u01b0\u1ee3c chi\u1ebfu b\u1eb1ng b\u1ee9c x\u1ea1 h\u1ed3ng ngo\u1ea1i. D.C\u00f3 th\u1ec3 […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[158],"tags":[1443,1442],"yoast_head":"\n\n\n
\n C\u00e2u<\/td>\n 1<\/td>\n 2<\/td>\n 3<\/td>\n 4<\/td>\n 5<\/td>\n 6<\/td>\n 7<\/td>\n<\/tr>\n \n \u0110\u00e1p \u00e1n<\/td>\n C<\/td>\n C<\/td>\n C<\/td>\n D<\/td>\n B<\/td>\n D<\/td>\n A<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"