C\u00e2u 8:<\/b>\u00a0D\u1ee5ng c\u1ee5 n\u00e0o d\u01b0\u1edbi \u0111\u00e2y ho\u1ea1t \u0111\u1ed9ng d\u1ef1a v\u00e0o hi\u1ec7n t\u01b0\u1ee3ng quang \u0111i\u1ec7n trong?<\/p>\n
A. Pin nhi\u1ec7t \u0111i\u1ec7n.<\/p>\n
B. \u0110\u00e8n LED.<\/p>\n
C. Quang tr\u1edf.<\/p>\n
D.T\u1ebf b\u00e0o quang \u0111i\u1ec7n.<\/p>\n
C\u00e2u 9:<\/b>\u00a0G\u1ecdi c l\u00e0 v\u1eadn t\u1ed1c \u00e1nh s\u00e1ng trong ch\u00e2n kh\u00f4ng, v l\u00e0 v\u1eadn t\u1ed1c \u00e1nh s\u00e1ng trong ch\u1ea5t ph\u00e1t quang. Mu\u1ed1n m\u1ed9t ch\u1ea5t ph\u00e1t quang ph\u00e1t ra b\u1ee9c x\u1ea1 c\u00f3 b\u01b0\u1edbc s\u00f3ng \u03bb, c\u1ea7n chi\u1ebfu v\u00e0o ch\u1ea5t \u0111\u00f3 b\u1ee9c x\u1ea1 c\u00f3<\/p>\n
A. t\u1ea7n s\u1ed1 nh\u1ecf h\u01a1n c\/\u03bb<\/p>\n
B. t\u1ea7n s\u1ed1 nh\u1ecf h\u01a1n v\/\u03bb<\/p>\n
C. t\u1ea7n s\u1ed1 l\u1edbn h\u01a1n v\/\u03bb<\/p>\n
D.t\u1ea7n s\u1ed1 l\u1edbn h\u01a1n c\/\u03bb<\/p>\n
C\u00e2u 10:<\/b>\u00a0Hi\u1ec7n t\u01b0\u1ee3ng kh\u00f4ng th\u1ec3 hi\u1ec7n t\u00ednh ch\u1ea5t h\u1ea1t c\u1ee7a \u00e1nh s\u00e1ng l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng<\/p>\n
A. quang \u0111i\u1ec7n ngo\u00e0i<\/p>\n
B. quang \u0111i\u1ec7n trong<\/p>\n
C. nhi\u1ec5u x\u1ea1 \u00e1nh s\u00e1ng<\/p>\n
D. t\u1ea1o th\u00e0nh quang ph\u1ed5 v\u1ea1ch c\u1ee7a nguy\u00ean t\u1eeb Hy\u0111r\u00f4<\/p>\n
C\u00e2u 11:<\/b>\u00a0Hi\u1ec7n t\u01b0\u1ee3ng quang \u0111i\u1ec7n trong<\/p>\n
A. l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng \u00ealectron h\u1ea5p th\u1ee5 photon c\u00f3 n\u0103ng l\u1ef1ng \u0111\u1ee7 l\u1edbn \u0111\u1ec3 b\u1ee9t ra kh\u1ecfi kh\u1ed1i ch\u1ea5t.<\/p>\n
B. hi\u1ec7n t\u01b0\u1ee3ng \u00ealectron chuy\u1ec3n \u0111\u1ed9ng nhanh h\u01a1n khi h\u1ea5p th\u1ee5 photon.<\/p>\n
C. x\u1ea3y ra v\u1edbi ch\u1ea5t b\u00e1n d\u1eabn khi \u00e1nh s\u00e1ng k\u00edch th\u00edch c\u00f3 t\u1ea7n s\u1ed1 l\u1edbn h\u01a1n m\u1ed9t t\u1ea7n s\u1ed1 gi\u1edbi h\u1ea1n.<\/p>\n
D.x\u1ea3y ra v\u1edbi \u00e1nh s\u00e1ng c\u00f3 b\u01b0\u1edbc s\u00f3ng l\u1edbn h\u01a1n m\u1ed9t gi\u00e1 tr\u1ecb n\u00e0o \u0111\u00f3.<\/p>\n
C\u00e2u 12:<\/b>\u00a0Gi\u1edbi h\u1ea1n quang d\u1eabn c\u1ee7a ch\u1ea5t CdS l\u00e0 0,9 \u03bcm. N\u0103ng l\u01b0\u1ee3ng t\u1ed1i thi\u1ec3u c\u1ee7a photon \u00e1nh s\u00e1ng c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng quang d\u1eabn CdS l\u00e0<\/p>\n
A. 0,56 eV<\/p>\n
B. 1,12 eV<\/p>\n
C. 1,38 eV<\/p>\n
D.2,20 eV<\/p>\n
C\u00e2u 13:<\/b>\u00a0M\u1ed9t ch\u1ea5t quang d\u1eabn c\u00f3 gi\u1edbi h\u1ea1n quang d\u1eabn l\u00e0 4\u03bcm. N\u0103ng l\u01b0\u1ee3ng k\u00edch ho\u1ea1t c\u1ee7a ch\u1ea5t \u0111\u00f3 l\u00e0<\/p>\n
A. 4,97.10-20<\/sup>\u00a0J<\/p>\n B. 3,26.10-20<\/sup>\u00a0J<\/p>\n C. 4,97.10-19<\/sup>\u00a0J<\/p>\n D.3,261.10-19<\/sup>\u00a0J<\/p>\n H\u01b0\u1edbng d\u1eabn gi\u1ea3i v\u00e0 \u0111\u00e1p \u00e1n<\/b><\/p>\n C\u00e2u 8:\u00a0D\u1ee5ng c\u1ee5 n\u00e0o d\u01b0\u1edbi \u0111\u00e2y ho\u1ea1t \u0111\u1ed9ng d\u1ef1a v\u00e0o hi\u1ec7n t\u01b0\u1ee3ng quang \u0111i\u1ec7n trong? A. Pin nhi\u1ec7t \u0111i\u1ec7n. B. \u0110\u00e8n LED. C. Quang tr\u1edf. D.T\u1ebf b\u00e0o quang \u0111i\u1ec7n. C\u00e2u 9:\u00a0G\u1ecdi c l\u00e0 v\u1eadn t\u1ed1c \u00e1nh s\u00e1ng trong ch\u00e2n kh\u00f4ng, v l\u00e0 v\u1eadn t\u1ed1c \u00e1nh s\u00e1ng trong ch\u1ea5t ph\u00e1t quang. Mu\u1ed1n m\u1ed9t ch\u1ea5t ph\u00e1t quang […]<\/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 8<\/td>\n 9<\/td>\n 10<\/td>\n 11<\/td>\n 12<\/td>\n 13<\/td>\n<\/tr>\n \n \u0110\u00e1p \u00e1n<\/td>\n A<\/td>\n D<\/td>\n C<\/td>\n C<\/td>\n C<\/td>\n C<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"