{"segment":[{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"Ta nh\u00ecn th\u1ea5y m\u1ed9t v\u1eadt khi n\u00e0o?","select":["A. Khi v\u1eadt ph\u00e1t ra \u00e1nh s\u00e1ng.","B. Khi v\u1eadt \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng.","C. Khi c\u00f3 \u00e1nh s\u00e1ng t\u1eeb m\u1eaft ta chi\u1ebfu s\u00e1ng v\u1eadt.","D. Khi c\u00f3 \u00e1nh s\u00e1ng t\u1eeb v\u1eadt truy\u1ec1n v\u00e0o m\u1eaft ta."],"hint":"","explain":"<span class='basic_left'>Ta nh\u00ecn th\u1ea5y m\u1ed9t v\u1eadt khi c\u00f3 \u00e1nh s\u00e1ng t\u1eeb v\u1eadt truy\u1ec1n v\u00e0o m\u1eaft ta.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2051},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"V\u00ec sao ta nh\u00ecn th\u1ea5y m\u1ed9t v\u1eadt?","select":["A. V\u00ec ta m\u1edf m\u1eaft h\u01b0\u1edbng v\u1ec1 ph\u00eda v\u1eadt","B. V\u00ec m\u1eaft ta ph\u00e1t ra c\u00e1c tia s\u00e1ng chi\u1ebfu l\u00ean v\u1eadt","C. V\u00ec c\u00f3 \u00e1nh s\u00e1ng t\u1eeb v\u1eadt truy\u1ec1n v\u00e0o m\u1eaft ta","D. V\u00ec v\u1eadt \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng"],"hint":"","explain":"<span class='basic_left'>Ta nh\u00ecn th\u1ea5y m\u1ed9t v\u1eadt v\u00ec c\u00f3 \u00e1nh s\u00e1ng t\u1eeb v\u1eadt truy\u1ec1n v\u00e0o m\u1eaft ta.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2052},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"Tr\u01b0\u1eddng h\u1ee3p n\u00e0o d\u01b0\u1edbi \u0111\u00e2y l\u00e0 ngu\u1ed3n s\u00e1ng?","select":["A. Quy\u1ec3n s\u00e1ch \u0111\u1eb7t tr\u00ean b\u00e0n v\u00e0o ban ng\u00e0y","B. M\u1eb7t tr\u1eddi","C. \u0110\u00f4i d\u00e9p \u0111\u1ec3 ngo\u00e0i h\u00e8 v\u00e0o bu\u1ed5i s\u00e1ng","D. Qu\u1ea7n \u00e1o ph\u01a1i ngo\u00e0i n\u1eafng"],"hint":"","explain":"<span class='basic_left'>M\u1eb7t tr\u1eddi l\u00e0 ngu\u1ed3n s\u00e1ng.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2053},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"H\u00e3y ch\u1ec9 ra v\u1eadt n\u00e0o d\u01b0\u1edbi \u0111\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 ngu\u1ed3n s\u00e1ng?","select":["A. Ng\u1ecdn n\u1ebfn \u0111ang ch\u00e1y","B. V\u1ecf chai s\u00e1ng ch\u00f3i d\u01b0\u1edbi tr\u1eddi n\u1eafng","C. M\u1eb7t tr\u1eddi","D. \u0110\u00e8n \u1ed1ng \u0111ang s\u00e1ng"],"hint":"","explain":"<span class='basic_left'>V\u1ecf chai s\u00e1ng ch\u00f3i d\u01b0\u1edbi tr\u1eddi n\u1eafng l\u00e0 v\u1eadt s\u00e1ng, ph\u1ea3n x\u1ea1 l\u1ea1i \u00e1nh s\u00e1ng c\u1ee7a m\u1eb7t tr\u1eddi.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2054},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"Em h\u00e3y t\u00ecm ngu\u1ed3n s\u00e1ng trong nh\u1eefng v\u1eadt sau:","select":["A. Quy\u1ec3n s\u00e1ch","B. M\u1eb7t Tr\u1eddi","C. B\u00f3ng \u0111\u00e8n b\u1ecb \u0111\u1ee9t d\u00e2y t\u00f3c","D. M\u1eb7t Tr\u0103ng"],"hint":"","explain":"<span class='basic_left'>Ngu\u1ed3n s\u00e1ng l\u00e0 v\u1eadt t\u1ef1 ph\u00e1t ra \u00e1nh s\u00e1ng. Quy\u1ec3n s\u00e1ch v\u00e0 b\u00f3ng \u0111\u00e8n b\u1ecb \u0111\u1ee9t d\u00e2y t\u00f3c kh\u00f4ng th\u1ec3 ph\u00e1t ra \u00e1nh s\u00e1ng, c\u00f2n m\u1eb7t tr\u0103ng s\u1edf d\u0129 s\u00e1ng \u0111\u01b0\u1ee3c l\u00e0 v\u00ec n\u00f3 nh\u1eadn \u00e1nh s\u00e1ng c\u1ee7a m\u1eb7t tr\u1eddi v\u00e0 h\u1eaft \u00e1nh s\u00e1ng xu\u1ed1ng Tr\u00e1i \u0110\u1ea5t.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2055},{"time":24,"part":[{"title":"","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"Ch\u1ecdn ph\u00e1t bi\u1ec3u sai:","select":["A. Ngu\u1ed3n s\u00e1ng l\u00e0 v\u1eadt t\u1ef1 ph\u00e1t \u00e1nh s\u00e1ng ho\u1eb7c l\u00e0 v\u1eadt \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng","B. V\u1eadt \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng g\u1ecdi l\u00e0 v\u1eadt s\u00e1ng","C. V\u1eadt s\u00e1ng bao g\u1ed3m c\u1ea3 ngu\u1ed3n s\u00e1ng v\u00e0 v\u1eadt \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng","D. B v\u00e0 C \u0111\u1ec1u \u0111\u00fang"],"hint":"","explain":"<span class='basic_left'>Ngu\u1ed3n s\u00e1ng l\u00e0 v\u1eadt t\u1ef1 ph\u00e1t \u00e1nh s\u00e1ng.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":2056},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"H\u00e3y ch\u1ec9 ra v\u1eadt n\u00e0o d\u01b0\u1edbi \u0111\u00e2y l\u00e0 v\u1eadt s\u00e1ng?","select":["A. \u0110\u00e1m m\u00e2y tr\u00ean tr\u1eddi","B. V\u1ecf h\u1ed9p s\u1eefa s\u00e1ng ch\u00f3i d\u01b0\u1edbi tr\u1eddi n\u1eafng","C. M\u1eb7t Tr\u0103ng","D. C\u1ea3 A, B, C \u0111\u1ec1u \u0111\u00fang"],"hint":"","explain":"<span class='basic_left'>C\u1ea3 ba v\u1eadt \u0111\u1ec1u nh\u1eadn \u00e1nh s\u00e1ng v\u00e0 ph\u1ea3n x\u1ea1 l\u1ea1i.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2057},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"Ta c\u00f3 th\u1ec3 d\u00f9ng m\u1ed9t ng\u1ecdn n\u1ebfn th\u1eafp s\u00e1ng trong ph\u00f2ng. Ng\u1ecdn n\u1ebfn \u0111\u01b0\u1ee3c coi l\u00e0:","select":["A. Ngu\u1ed3n s\u00e1ng","B. V\u1eadt s\u00e1ng","C. C\u1ea3 ngu\u1ed3n s\u00e1ng v\u00e0 v\u1eadt s\u00e1ng","D. Kh\u00f4ng l\u00e0 ngu\u1ed3n s\u00e1ng v\u00e0 c\u0169ng kh\u00f4ng l\u00e0 v\u1eadt s\u00e1ng"],"hint":"","explain":"<span class='basic_left'>Ng\u1ecdn n\u1ebfn \u0111\u01b0\u1ee3c coi l\u00e0 ngu\u1ed3n s\u00e1ng v\u00ec n\u00f3 t\u1ef1 ph\u00e1t ra \u00e1nh s\u00e1ng.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":2058},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"Trong m\u1ed9t ph\u00f2ng ho\u00e0n to\u00e0n \u0111\u00f3ng k\u00edn b\u1eb1ng c\u1eeda k\u00ednh, ta c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y \u0111\u1ed3 v\u1eadt trong ph\u00f2ng khi:","select":["A. Ban \u0111\u00eam, b\u1eadt \u0111\u00e8n, c\u00f3 \u00e1nh tr\u0103ng, nh\u01b0ng nh\u1eafm m\u1eaft","B. Ban \u0111\u00eam, b\u1eadt \u0111\u00e8n, kh\u00f4ng c\u00f3 \u00e1nh tr\u0103ng, nh\u01b0ng nh\u1eafm m\u1eaft","C. Ban \u0111\u00eam, kh\u00f4ng b\u1eadt \u0111\u00e8n, kh\u00f4ng c\u00f3 \u00e1nh tr\u0103ng, nh\u01b0ng m\u1edf m\u1eaft","D. Ban ng\u00e0y, kh\u00f4ng b\u1eadt \u0111\u00e8n, m\u1edf m\u1eaft"],"hint":"","explain":"<span class='basic_left'>Ta c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y \u0111\u1ed3 v\u1eadt trong ph\u00f2ng khi ban ng\u00e0y, kh\u00f4ng b\u1eadt \u0111\u00e8n, m\u1edf m\u1eaft.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2059},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"Tr\u01b0\u1eddng h\u1ee3p n\u00e0o d\u01b0\u1edbi \u0111\u00e2y kh\u00f4ng nh\u1eadn bi\u1ebft \u0111\u01b0\u1ee3c mi\u1ebfng b\u00eca m\u00e0u \u0111en?","select":["A. D\u00e1n mi\u1ebfng b\u00eca m\u00e0u \u0111en l\u00ean m\u1ed9t t\u1edd gi\u1ea5y xanh r\u1ed3i \u0111\u1eb7t d\u01b0\u1edbi \u00e1nh \u0111\u00e8n \u0111i\u1ec7n","B. D\u00e1n mi\u1ebfng b\u00eca \u0111en l\u00ean tr\u00ean m\u1ed9t t\u1edd gi\u1ea5y tr\u1eafng r\u1ed3i \u0111\u1eb7t trong ph\u00f2ng t\u1ed1i","C. \u0110\u1eb7t mi\u1ebfng b\u00eca \u0111en tr\u01b0\u1edbc m\u1ed9t ng\u1ecdn n\u1ebfn \u0111ang ch\u00e1y","D. \u0110\u1eb7t mi\u1ebfng b\u00eca \u0111en ngo\u00e0i tr\u1eddi n\u1eafng"],"hint":"","explain":"<span class='basic_left'>V\u00ec kh\u00f4ng c\u00f3 ngu\u1ed3n s\u00e1ng (ph\u00f2ng t\u1ed1i) n\u00ean kh\u00f4ng c\u00f3 \u00e1nh s\u00e1ng chi\u1ebfu v\u00e0o t\u1edd gi\u1ea5y, do \u0111\u00f3 c\u0169ng kh\u00f4ng c\u00f3 \u00e1nh s\u00e1ng t\u1eeb t\u1edd gi\u1ea5y h\u1eaft l\u1ea1i truy\u1ec1n v\u00e0o m\u1eaft ta.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2060},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"S\u1edf d\u0129 ta nh\u00ecn \u0111\u01b0\u1ee3c m\u1ecdi v\u1eadt l\u00e0 v\u00ec:","select":["A. C\u00e1c v\u1eadt \u0111\u00f3 t\u1ef1 ph\u00e1t ra \u00e1nh s\u00e1ng v\u00e0 nh\u1eefng \u00e1nh s\u00e1ng \u0111\u00f3 chi\u1ebfu \u0111\u1ebfn m\u1eaft ta","B. C\u00e1c v\u1eadt \u0111\u00f3 nh\u1eadn \u0111\u01b0\u1ee3c \u00e1nh s\u00e1ng t\u1eeb c\u00e1c v\u1eadt kh\u00e1c chi\u1ebfu \u0111\u1ebfn n\u00f3 v\u00e0 ph\u1ea3n x\u1ea1 nh\u1eefng \u00e1nh s\u00e1ng \u0111\u00f3 v\u00e0o m\u1eaft ta","C. C\u00e1c v\u1eadt \u0111\u00f3 t\u1ef1 ph\u00e1t s\u00e1ng ho\u1eb7c h\u1eaft l\u1ea1i nh\u1eefng \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c chi\u1ebfu \u0111\u1ebfn, v\u00e0o m\u1eaft ta","D. C\u00f3 \u00e1nh s\u00e1ng truy\u1ec1n v\u00e0o m\u1eaft ta"],"hint":"","explain":"<span class='basic_left'>C\u00e2u C l\u00e0 c\u00e2u t\u1ed5ng h\u1ee3p hai c\u00e2u A v\u00e0 B v\u00e0 l\u00e0 c\u00e2u n\u00f3i \u0111\u1ea7y \u0111\u1ee7 nh\u1ea5t v\u1ec1 vi\u1ec7c nh\u00ecn th\u1ea5y v\u1eadt s\u00e1ng. C\u00e2u D sai v\u00ec khi c\u00f3 \u00e1nh s\u00e1ng truy\u1ec1n \u0111\u1ebfn m\u1eaft ta th\u00ec ta ch\u1ec9 nh\u1eadn bi\u1ebft \u0111\u01b0\u1ee3c \u00e1nh s\u00e1ng ch\u1ee9 ch\u01b0a ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c v\u1eadt s\u00e1ng<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2061},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"Ta kh\u00f4ng nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c m\u1ed9t v\u1eadt l\u00e0 v\u00ec:","select":["A. V\u1eadt \u0111\u00f3 kh\u00f4ng t\u1ef1 ph\u00e1t ra \u00e1nh s\u00e1ng","B. V\u1eadt \u0111\u00f3 c\u00f3 ph\u00e1t ra \u00e1nh s\u00e1ng nh\u01b0ng b\u1ecb v\u1eadt c\u1ea3n che khu\u1ea5t l\u00e0m cho nh\u1eefng \u00e1nh s\u00e1ng t\u1eeb v\u1eadt \u0111\u00f3 kh\u00f4ng th\u1ec3 truy\u1ec1n \u0111\u1ebfn m\u1eaft ta","C. V\u00ec m\u1eaft ta kh\u00f4ng nh\u1eadn \u0111\u01b0\u1ee3c \u00e1nh s\u00e1ng","D. C\u00e1c c\u00e2u tr\u00ean \u0111\u1ec1u \u0111\u00fang"],"hint":"","explain":"<span class='basic_left'>Khi m\u1ed9t v\u1eadt kh\u00f4ng truy\u1ec1n \u0111\u01b0\u1ee3c nh\u1eefng \u00e1nh s\u00e1ng c\u1ee7a n\u00f3 \u0111\u1ebfn m\u1eaft ta th\u00ec ta kh\u00f4ng nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c v\u1eadt \u0111\u00f3. C\u00e2u A sai v\u00ec v\u1eadt \u0111\u00f3 khi nh\u1eadn \u0111\u01b0\u1ee3c \u00e1nh s\u00e1ng t\u1eeb v\u1eadt kh\u00e1c th\u00ec c\u0169ng c\u00f3 th\u1ec3 h\u1eaft l\u1ea1i \u00e1nh s\u00e1ng \u0111\u00f3 v\u00e0o m\u1eaft ta v\u00e0 ta c\u0169ng c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y n\u00f3, kh\u00f4ng nh\u1ea5t thi\u1ebft \u0111\u00f3 ph\u1ea3i l\u00e0 ngu\u1ed3n s\u00e1ng. C\u00e2u C sai v\u00ec ta kh\u00f4ng nh\u00ecn th\u1ea5y m\u1ed9t v\u1eadt kh\u00f4ng ph\u1ea3i v\u00ec m\u1eaft ta kh\u00f4ng nh\u1eadn \u0111\u01b0\u1ee3c \u00e1nh s\u00e1ng m\u00e0 v\u00ec \u0111\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 \u00e1nh s\u00e1ng ph\u00e1t ra t\u1eeb v\u1eadt m\u00e0 ta c\u1ea7n nh\u00ecn.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2062},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"Ban ng\u00e0y tr\u1eddi n\u1eafng, d\u00f9ng m\u1ed9t g\u01b0\u01a1ng ph\u1eb3ng h\u1ee9ng \u00e1nh s\u00e1ng m\u1eb7t tr\u1eddi, r\u1ed3i xoay g\u01b0\u01a1ng chi\u1ebfu \u00e1nh n\u1eafng qua c\u1eeda s\u1ed5 v\u00e0o trong ph\u00f2ng. G\u01b0\u01a1ng \u0111\u00f3 c\u00f3 ph\u1ea3i ngu\u1ed3n s\u00e1ng kh\u00f4ng? T\u1ea1i sao?","select":["A. L\u00e0 ngu\u1ed3n s\u00e1ng v\u00ec c\u00f3 \u00e1nh s\u00e1ng t\u1eeb g\u01b0\u01a1ng chi\u1ebfu v\u00e0o ph\u00f2ng","B. L\u00e0 ngu\u1ed3n s\u00e1ng v\u00ec g\u01b0\u01a1ng h\u1eaft \u00e1nh s\u00e1ng M\u1eb7t Tr\u1eddi chi\u1ebfu v\u00e0o ph\u00f2ng","C. Kh\u00f4ng l\u00e0 ngu\u1ed3n s\u00e1ng v\u00ec g\u01b0\u01a1ng ch\u1ec9 chi\u1ebfu \u00e1nh s\u00e1ng theo m\u1ed9t h\u01b0\u1edbng","D. Kh\u00f4ng ph\u1ea3i l\u00e0 ngu\u1ed3n s\u00e1ng v\u00ec g\u01b0\u01a1ng kh\u00f4ng t\u1ef1 ph\u00e1t ra \u00e1nh s\u00e1ng"],"hint":"","explain":"<span class='basic_left'>V\u00ec ngu\u1ed3n s\u00e1ng l\u00e0 v\u1eadt t\u1ef1 n\u00f3 ph\u00e1t ra \u00e1nh s\u00e1ng m\u00e0 g\u01b0\u01a1ng kh\u00f4ng t\u1ef1 ph\u00e1 ra \u00e1nh s\u00e1ng, n\u00f3 ch\u1ec9 h\u1eaft l\u1ea1i \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c M\u1eb7t Tr\u1eddi chi\u1ebfu t\u1edbi.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2063},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"Ta nh\u00ecn th\u1ea5y b\u00f4ng hoa m\u00e0u \u0111\u1ecf v\u00ec?","select":["A. B\u1ea3n th\u00e2n b\u00f4ng hoa c\u00f3 m\u00e0u \u0111\u1ecf","B. B\u00f4ng hoa l\u00e0 m\u1ed9t v\u1eadt s\u00e1ng","C. C\u00f3 \u00e1nh s\u00e1ng t\u1eeb b\u00f4ng hoa \u0111\u1ecf truy\u1ec1n \u0111\u1ebfn m\u1eaft ta","D. B\u00f4ng hoa l\u00e0 m\u1ed9t ngu\u1ed3n s\u00e1ng"],"hint":"","explain":"<span class='basic_left'>Ta nh\u00ecn th\u1ea5y b\u00f4ng hoa m\u00e0u \u0111\u1ecf v\u00ec c\u00f3 \u00e1nh s\u00e1ng m\u00e0u \u0111\u1ecf t\u1eeb b\u00f4ng hoa h\u1eaft \u0111\u1ebfn m\u1eaft ta.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2064},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"Ta c\u00f3 th\u1ec3 d\u00f9ng m\u1ed9t g\u01b0\u01a1ng ph\u1eb3ng h\u01b0\u1edbng \u00e1nh n\u1eafng chi\u1ebfu qua c\u1eeda s\u1ed5 l\u00e0m s\u00e1ng c\u0103n ph\u00f2ng? V\u1eady: ","select":["A. G\u01b0\u01a1ng \u0111\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 ngu\u1ed3n s\u00e1ng","B. G\u01b0\u01a1ng \u0111\u00f3 l\u00e0 ngu\u1ed3n s\u00e1ng","C. G\u01b0\u01a1ng \u0111\u00f3 v\u1eeba l\u00e0 ngu\u1ed3n s\u00e1ng v\u1eeba l\u00e0 v\u1eadt s\u00e1ng","D. G\u01b0\u01a1ng \u0111\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 v\u1eadt s\u00e1ng"],"hint":"","explain":"<span class='basic_left'>G\u01b0\u01a1ng ch\u1ec9 h\u1eaft l\u1ea1i \u00e1nh s\u00e1ng M\u1eb7t Tr\u1eddi, n\u00ean n\u00f3 l\u00e0 v\u1eadt s\u00e1ng.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":2065},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"Tr\u01b0\u1eddng h\u1ee3p n\u00e0o kh\u00f4ng ph\u1ea3i ngu\u1ed3n s\u00e1ng?","select":["A. M\u1eb7t tr\u1eddi","B. D\u00e2y t\u00f3c b\u00f3ng \u0111\u00e8n","C. M\u1eb7t tr\u0103ng","D. \u0110om \u0111\u00f3m"],"hint":"","explain":"<span class='basic_left'>M\u1eb7t tr\u0103ng ch\u1ec9 ph\u1ea3n x\u1ea1 l\u1ea1i \u00e1nh s\u00e1ng c\u1ee7a m\u1eb7t tr\u1eddi.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2066},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"\u0110i\u1ec1n t\u1eeb th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng:<br\/>M\u1eaft ta nh\u1eadn bi\u1ebft \u0111\u01b0\u1ee3c \u00e1nh s\u00e1ng khi c\u00f3 \u00e1nh s\u00e1ng \u0111i v\u00e0o (1)\u2026\u2026\u2026M\u1eaft ta ch\u1ec9 c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y (2)\u2026\u2026\u2026\u2026\u2026khi c\u00f3 \u00e1nh s\u00e1ng \u0111i t\u1eeb v\u1eadt (3)\u2026\u2026\u2026\u2026\u2026m\u1eaft ta.","select":["A. (1) m\u1eaft ta; (2) v\u1eadt; (3) truy\u1ec1n t\u1edbi","B. (1) v\u1eadt; (2) v\u1eadt; (3) truy\u1ec1n t\u1edbi","C. (1) m\u1eaft ta; (2) v\u1eadt; (3) kh\u00f4ng truy\u1ec1n","D. (1) v\u1eadt, (2) v\u1eadt, (3) kh\u00f4ng truy\u1ec1n"],"hint":"","explain":"<span class='basic_left'>M\u1eaft ta nh\u1eadn bi\u1ebft \u0111\u01b0\u1ee3c \u00e1nh s\u00e1ng khi c\u00f3 \u00e1nh s\u00e1ng \u0111i v\u00e0o (1) m\u1eaft ta. M\u1eaft ta ch\u1ec9 c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y (2) v\u1eadt khi c\u00f3 \u00e1nh s\u00e1ng \u0111i t\u1eeb v\u1eadt (3) truy\u1ec1n t\u1edbi m\u1eaft ta<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2067},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"\u0110i\u1ec1n t\u1eeb th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng:<br\/>Nh\u1eefng (1)\u2026\u2026\u2026 \u00e1nh s\u00e1ng g\u1ecdi l\u00e0 ngu\u1ed3n s\u00e1ng. V\u1eadt kh\u00f4ng th\u1ec3 ph\u00e1t ra \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c nh\u01b0ng c\u00f3 th\u1ec3 nh\u1eadn \u00e1nh s\u00e1ng t\u1eeb m\u1ed9t ngu\u1ed3n kh\u00e1c v\u00e0 h\u1eaft v\u00e0o m\u1eaft ta g\u1ecdi l\u00e0 (2) \u2026\u2026\u2026\u2026. Ngu\u1ed3n s\u00e1ng v\u00e0 c\u00e1c v\u1eadt \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng g\u1ecdi chung l\u00e0 (3)\u2026\u2026\u2026\u2026\u2026","select":["A. (1) v\u1eadt t\u1ef1 ph\u00e1t ra; (2) v\u1eadt \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng; (3) v\u1eadt s\u00e1ng","B. (1) v\u1eadt \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng; (2) v\u1eadt t\u1ef1 ph\u00e1t ra; (3) v\u1eadt s\u00e1ng","C. (1) v\u1eadt s\u00e1ng; (2) v\u1eadt \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng; (3) v\u1eadt t\u1ef1 ph\u00e1t ra","D. C\u1ea3 3 \u0111\u00e1p \u00e1n \u0111\u1ec1u \u0111\u00fang"],"hint":"","explain":"<span class='basic_left'>Nh\u1eefng (1)v\u1eadt t\u1ef1 ph\u00e1t ra \u00e1nh s\u00e1ng g\u1ecdi l\u00e0 ngu\u1ed3n s\u00e1ng. V\u1eadt kh\u00f4ng th\u1ec3 ph\u00e1t ra \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c nh\u01b0ng c\u00f3 th\u1ec3 nh\u1eadn \u00e1nh s\u00e1ng t\u1eeb m\u1ed9t ngu\u1ed3n kh\u00e1c v\u00e0 h\u1eaft v\u00e0o m\u1eaft ta g\u1ecdi l\u00e0 (2) v\u1eadt \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng .Ngu\u1ed3n s\u00e1ng v\u00e0 c\u00e1c v\u1eadt \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng g\u1ecdi chung l\u00e0 (3) v\u1eadt s\u00e1ng.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":2068},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"T\u1ea1i sao ban \u0111\u00eam, khi t\u1ed1i h\u1eb3n ta kh\u00f4ng th\u1ec3 nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c nh\u1eefng v\u1eadt \u1edf xung quanh, n\u1ebfu nh\u1eefng v\u1eadt \u0111\u00f3 kh\u00f4ng t\u1ef1 ph\u00e1t s\u00e1ng \u0111\u01b0\u1ee3c? ","select":["A. V\u00ec m\u1eaft ta kh\u00f4ng ph\u00e1t ra \u00e1nh s\u00e1ng chi\u1ebfu v\u00e0o v\u1eadt. ","B. C\u00e1c v\u1eadt kh\u00f4ng t\u1ecfa ra \u00e1nh s\u00e1ng nh\u01b0 ban ng\u00e0y n\u1eefa.","C. Do ban \u0111\u00eam kh\u00f4ng c\u00f2n \u00e1nh s\u00e1ng c\u1ee7a M\u1eb7t Tr\u1eddi chi\u1ebfu \u0111\u1ebfn c\u00e1c v\u1eadt n\u00ean kh\u00f4ng c\u00f3 \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 l\u1ea1i m\u1eaft ta.","D. T\u1ea5t c\u1ea3 \u0111\u1ec1u sai."],"hint":"","explain":"<span class='basic_left'>Do ban \u0111\u00eam kh\u00f4ng c\u00f2n \u00e1nh s\u00e1ng c\u1ee7a M\u1eb7t Tr\u1eddi chi\u1ebfu \u0111\u1ebfn c\u00e1c v\u1eadt n\u00ean kh\u00f4ng c\u00f3 \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 l\u1ea1i m\u1eaft ta n\u00ean ta kh\u00f4ng th\u1ec3 nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c nh\u1eefng v\u1eadt \u1edf xung quanh, n\u1ebfu nh\u1eefng v\u1eadt \u0111\u00f3 kh\u00f4ng t\u1ef1 ph\u00e1t s\u00e1ng \u0111\u01b0\u1ee3c. V\u00ec \u0111\u1ec3 m\u1eaft nh\u00ecn th\u1ea5y v\u1eadt th\u00ec ph\u1ea3i c\u00f3 \u00e1nh s\u00e1ng t\u1eeb v\u1eadt \u0111\u00f3 chi\u1ebfu v\u00e0o m\u1eaft ta. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2069},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"\u0110i\u1ec1n t\u1eeb th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng:<br\/>V\u1eadt m\u00e0u \u0111en l\u00e0 v\u1eadt (1)\u2026\u2026\u2026\u2026\u2026 \u0111\u01b0\u1ee3c v\u00e0 n\u00f3 c\u0169ng kh\u00f4ng (2)\u2026\u2026\u2026\u2026 \u00e1nh s\u00e1ng chi\u1ebfu v\u00e0o n\u00f3. S\u1edf d\u0129 ta nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c (3) \u2026\u2026\u2026\u2026\u2026 v\u00ec n\u00f3 \u0111\u01b0\u1ee3c \u0111\u1eb7t b\u00ean c\u1ea1nh nh\u1eefng v\u1eadt s\u00e1ng kh\u00e1c.","select":["A. (1) v\u1eadt kh\u00f4ng t\u1ef1 ph\u00e1t ra \u00e1nh s\u00e1ng; (2) v\u1eadt \u0111en; (3) h\u1eaft l\u1ea1i","B. (1) v\u1eadt \u0111en; (2) h\u1eaft l\u1ea1i; (3) v\u1eadt kh\u00f4ng t\u1ef1 ph\u00e1t ra \u00e1nh s\u00e1ng","C. (1) v\u1eadt \u0111en; (2) v\u1eadt kh\u00f4ng t\u1ef1 ph\u00e1t ra \u00e1nh s\u00e1ng; (3) h\u1eaft l\u1ea1i","D. (1) v\u1eadt kh\u00f4ng t\u1ef1 ph\u00e1t ra \u00e1nh s\u00e1ng; (2) h\u1eaft l\u1ea1i; (3) v\u1eadt \u0111en"],"hint":"","explain":"<span class='basic_left'>V\u1eadt m\u00e0u \u0111en l\u00e0 v\u1eadt (1)v\u1eadt kh\u00f4ng t\u1ef1 ph\u00e1t ra \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c v\u00e0 n\u00f3 c\u0169ng kh\u00f4ng (2) h\u1eaft l\u1ea1i \u00e1nh s\u00e1ng chi\u1ebfu v\u00e0o n\u00f3. S\u1edf d\u0129 ta nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c (3) v\u1eadt \u0111en v\u00ec n\u00f3 \u0111\u01b0\u1ee3c \u0111\u1eb7t b\u00ean c\u1ea1nh nh\u1eefng v\u1eadt s\u00e1ng kh\u00e1c.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2070}],"lesson":{"save":0,"level":2}}