{"segment":[{"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":"V\u1eadt n\u00e0o sau \u0111\u00e2y l\u00e0 ngu\u1ed3n s\u00e1ng:","select":["A. M\u1eb7t Tr\u1eddi.","B. Quy\u1ec3n s\u00e1ch. ","C. B\u00e1t. ","D. B\u00fat."],"hint":"","explain":"<span class='basic_left'>Ngu\u1ed3n s\u00e1ng l\u00e0 v\u1eadt t\u1ef1 n\u00f3 ph\u00e1t ra \u00e1nh s\u00e1ng<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2191},{"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":"\u0110i\u1ec1n t\u1eeb th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng:<br\/>Ta nh\u00ecn th\u1ea5y m\u1ed9t v\u1eadt khi c\u00f3.........t\u1eeb v\u1eadt \u0111\u00f3 truy\u1ec1n t\u1eeb v\u1eadt v\u00e0o m\u1eaft ta.","select":["A. C\u1ea3m gi\u00e1c.","B. \u00c1nh s\u00e1ng M\u1eb7t Tr\u1eddi.","C. \u00c1nh s\u00e1ng.","D. M\u00f9i h\u01b0\u01a1ng."],"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 \u0111\u00f3 truy\u1ec1n t\u1eeb v\u1eadt v\u00e0o m\u1eaft ta.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2192},{"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":"V\u1eadt n\u00e0o sau \u0111\u00e2y l\u00e0 v\u1eadt s\u00e1ng: ","select":["A. D\u00e2y t\u00f3c b\u00f3ng \u0111\u00e8n.","B. M\u1eb7t Tr\u0103ng.","C. M\u1eb7t Tr\u1eddi.","D. \u0110om \u0111\u00f3m."],"hint":"","explain":"<span class='basic_left'>M\u1eb7t Tr\u0103ng ph\u1ea3n x\u1ea1 l\u1ea1i \u00e1nh s\u00e1ng c\u1ee7a 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 B.<\/span><\/span> ","column":2}]}],"id_ques":2193},{"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":"\u1ede m\u1ed9t s\u1ed1 c\u0103n ph\u00f2ng, c\u00e1c c\u1eeda s\u1ed5 c\u00f3 hai l\u1edbp k\u00ednh. M\u1ee5c \u0111\u00edch c\u1ee7a vi\u1ec7c n\u00e0y l\u00e0:","select":["A. \u0110i\u1ec1u h\u00f2a nhi\u1ec7t \u0111\u1ed9 c\u0103n ph\u00f2ng.","B. Ng\u0103n ti\u1ebfng \u1ed3n ho\u1eb7c ch\u1ed1ng l\u1ea1nh.","C. Ch\u1ed1ng rung.","D. L\u00e0m cho c\u1eeda th\u00eam v\u1eefng ch\u1eafc."],"hint":"","explain":"<span class='basic_left'>Ng\u0103n ti\u1ebfng \u1ed3n ho\u1eb7c ch\u1ed1ng l\u1ea1nh n\u00ean \u1edf m\u1ed9t s\u1ed1 c\u0103n ph\u00f2ng, c\u00e1c c\u1eeda s\u1ed5 c\u00f3 hai l\u1edbp k\u00ednh.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2194},{"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\u00f4i tr\u01b0\u1eddng trong su\u1ed1t v\u00e0 \u0111\u00f4ng t\u00ednh, \u00e1nh s\u00e1ng truy\u1ec1n \u0111i theo \u0111\u01b0\u1eddng nh\u01b0 th\u1ebf n\u00e0o?","select":["A. Cong","B. G\u1ea5p kh\u00fac","C. Xi\u00ean","D. Th\u1eb3ng"],"hint":"","explain":"<span class='basic_left'>Trong m\u00f4i tr\u01b0\u1eddng trong su\u1ed1t v\u00e0 \u0111\u00f4ng t\u00ednh, \u00e1nh s\u00e1ng truy\u1ec1n \u0111i theo \u0111\u01b0\u1eddng th\u1eb3ng.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2195},{"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":"Ch\u00f9m s\u00e1ng h\u1ed9i t\u1ee5 l\u00e0 g\u1ed3m c\u00e1c tia s\u00e1ng ........ tr\u00ean \u0111\u01b0\u1eddng truy\u1ec1n c\u1ee7a ch\u00fang.","select":["A. Kh\u00f4ng giao nhau.","B. Loe ra.","C. Giao nhau.","D. Song song."],"hint":"","explain":"<span class='basic_left'>Ch\u00f9m s\u00e1ng h\u1ed9i t\u1ee5 l\u00e0 g\u1ed3m c\u00e1c tia s\u00e1ng giao nhau tr\u00ean \u0111\u01b0\u1eddng truy\u1ec1n c\u1ee7a ch\u00fang.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2196},{"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":"Nguy\u1ec7t th\u1ef1c x\u1ea3y ra khi:","select":["A. M\u1eb7t Tr\u0103ng, M\u1eb7t Tr\u1eddi, Tr\u00e1i \u0110\u1ea5t kh\u00f4ng n\u1eb1m tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng.","B. M\u1eb7t Tr\u0103ng, M\u1eb7t Tr\u1eddi, Tr\u00e1i \u0110\u1ea5t n\u1eb1m tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 Tr\u00e1i \u0110\u1ea5t \u1edf gi\u1eefa.","C. M\u1eb7t Tr\u0103ng, M\u1eb7t Tr\u1eddi, Tr\u00e1i \u0110\u1ea5t n\u1eb1m tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 M\u1eb7t Tr\u0103ng \u1edf gi\u1eefa","D. M\u1eb7t Tr\u0103ng, M\u1eb7t Tr\u1eddi, Tr\u00e1i \u0110\u1ea5t n\u1eb1m tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 M\u1eb7t Tr\u1eddi \u1edf gi\u1eefa"],"hint":"","explain":"<span class='basic_left'>Nguy\u1ec7t th\u1ef1c x\u1ea3y ra khi M\u1eb7t Tr\u0103ng b\u1ecb Tr\u00e1i \u0110\u1ea5t che khu\u1ea5t kh\u00f4ng \u0111\u01b0\u1ee3c M\u1eb7t Tr\u1eddi chi\u1ebfu s\u00e1ng.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2197},{"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 quan s\u00e1t th\u1ea5y g\u00ec khi n\u01a1i ta \u0111\u1ee9ng n\u1eb1m trong b\u00f3ng t\u1ed1i c\u1ee7a M\u1eb7t Tr\u0103ng: ","select":["A. Tr\u1eddi b\u1ed7ng t\u1ed1i s\u1ea7m l\u1ea1i nh\u01b0 M\u1eb7t Tr\u1eddi bi\u1ebfn m\u1ea5t.","B. Tr\u1eddi b\u1ed7ng s\u00e1ng b\u1eebng l\u00ean. ","C. Xu\u1ea5t hi\u1ec7n c\u1ea7u v\u1ed3ng. ","D. Tr\u1eddi \u0111\u1ed5 m\u01b0a."],"hint":"","explain":"<span class='basic_left'>Do l\u00fac n\u00e0y M\u1eb7t Tr\u0103ng che khu\u1ea5t \u00e1nh s\u00e1ng M\u1eb7t Tr\u1eddi<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":2198},{"time":24,"part":[{"title":"","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"Ch\u1ecdn \u0111\u00e1p \u00e1n sai","select":["A. \u1ea2nh t\u1ea1o b\u1edfi g\u01b0\u01a1ng ph\u1eb3ng kh\u00f4ng h\u1ee9ng \u0111\u01b0\u1ee3c tr\u00ean m\u00e0n ch\u1eafn.","B. \u1ea2nh t\u1ea1o b\u1edfi g\u01b0\u01a1ng ph\u1eb3ng l\u1edbn b\u1eb1ng v\u1eadt.","C. \u1ea2nh t\u1ea1o b\u1edfi g\u01b0\u01a1ng ph\u1eb3ng l\u00e0 \u1ea3nh \u1ea3o.","D. \u1ea2nh t\u1ea1o b\u01a1i g\u01b0\u01a1ng ph\u1eb3ng nh\u1ecf h\u01a1n v\u1eadt."],"hint":"","explain":"<span class='basic_left'>\u1ea2nh t\u1ea1o b\u1edfi g\u01b0\u01a1ng ph\u1eb3ng l\u00e0 \u1ea3nh \u1ea3o, kh\u00f4ng h\u1ee9ng \u0111\u01b0\u1ee3c tr\u00ean m\u00e0n ch\u1eafn, l\u1edbn b\u1eb1ng v\u1eadt.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2199},{"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":"Chi\u1ebfu m\u1ed9t tia s\u00e1ng l\u00ean g\u01b0\u01a1ng ph\u1eb3ng ta thu \u0111\u01b0\u1ee3c m\u1ed9t tia ph\u1ea3n x\u1ea1 t\u1ea1o v\u1edbi tia t\u1edbi m\u1ed9t g\u00f3c $60{}^\\circ $. H\u1ecfi g\u00f3c t\u1edbi b\u1eb1ng bao nhi\u00eau \u0111\u1ed9? ","select":["A. $90{}^\\circ $","B. $30{}^\\circ $","C. $60{}^\\circ $","D. $120{}^\\circ $"],"hint":"","explain":"<span class='basic_left'>Tia t\u1edbi h\u1ee3p v\u1edbi tia ph\u1ea3n x\u1ea1 m\u1ed9t g\u00f3c $60{}^\\circ $, V\u1eady g\u00f3c t\u1edbi $=$ g\u00f3c ph\u1ea3n x\u1ea1 $= 60:2= 30{}^\\circ $<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2200},{"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":"Chi\u1ebfu m\u1ed9t tia s\u00e1ng vu\u00f4ng g\u00f3c v\u1edbi m\u1eb7t ph\u1eb3ng g\u01b0\u01a1ng, g\u00f3c ph\u1ea3n x\u1ea1 b\u1eb1ng bao nhi\u00eau \u0111\u1ed9?","select":["A. $180{}^\\circ $","B. $90{}^\\circ $","C. $45{}^\\circ $","D. $0{}^\\circ $"],"hint":"","explain":"<span class='basic_left'>Chi\u1ebfu m\u1ed9t tia s\u00e1ng vu\u00f4ng g\u00f3c v\u1edbi m\u1eb7t ph\u1eb3ng g\u01b0\u01a1ng, => g\u00f3c t\u1edbi = g\u00f3c ph\u1ea3n x\u1ea1 = $0{}^\\circ $.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2201},{"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":"\u1ea2nh c\u1ee7a m\u1ed9t v\u1eadt t\u1ea1o b\u1edfi g\u01b0\u01a1ng ph\u1eb3ng l\u00e0:","select":["A. \u1ea2nh th\u1eadt","B. \u1ea2nh \u1ea3o","C. \u1ea2nh h\u1ee9ng \u0111\u01b0\u1ee3c tr\u00ean m\u00e0n ch\u1eafn","D. \u1ea2nh l\u1edbn h\u01a1n v\u1eadt"],"hint":"","explain":"<span class='basic_left'>\u1ea2nh c\u1ee7a m\u1ed9t v\u1eadt t\u1ea1o b\u1edfi g\u01b0\u01a1ng ph\u1eb3ng l\u00e0 \u1ea3nh \u1ea3o, kh\u00f4ng h\u1ee9ng \u0111\u01b0\u1ee3c tr\u00ean m\u00e0n ch\u1eafn.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2202},{"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":"C\u00f3 m\u1ed9t v\u1eadt c\u00e1ch g\u01b0\u01a1ng ph\u1eb3ng 3m, h\u1ecfi kho\u1ea3ng c\u00e1ch t\u1eeb \u1ea3nh c\u1ee7a v\u1eadt \u0111\u1ebfn g\u01b0\u01a1ng ph\u1eb3ng l\u00e0 bao nhi\u00eau?","select":["A. 3m","B. 6m","C. 1,5m","D. 4m"],"hint":"","explain":"<span class='basic_left'>V\u00ec \u1ea3nh c\u1ee7a v\u1eadt t\u1ea1o b\u1edfi g\u01b0\u01a1ng ph\u1eb3ng \u0111\u1ed1i x\u1ee9ng v\u1edbi v\u1eadt qua g\u01b0\u01a1ng ph\u1eb3ng => kho\u1ea3ng c\u00e1ch t\u1eeb v\u1eadt \u0111\u1ebfn g\u01b0\u01a1ng = kho\u1ea3ng c\u00e1ch t\u1eeb \u1ea3nh c\u1ee7a v\u1eadt \u0111\u1ebfn g\u01b0\u01a1ng.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2203},{"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":"\u0110\u1eb7t m\u1ed9t v\u1eadt \u1edf tr\u01b0\u1edbc g\u01b0\u01a1ng, kho\u1ea3ng c\u00e1ch t\u1eeb v\u1eadt \u0111\u1ebfn \u1ea3nh t\u1ea1o b\u1edfi g\u01b0\u01a1ng l\u00e0 10m, h\u1ecfi kho\u1ea3ng c\u00e1ch t\u1eeb v\u1eadt \u0111\u1ebfn g\u01b0\u01a1ng l\u00e0? ","select":["A. 10m","B. 2,5m","C. 5m","D. 6m"],"hint":"","explain":"<span class='basic_left'>V\u00ec \u1ea3nh c\u1ee7a v\u1eadt t\u1ea1o b\u1edfi g\u01b0\u01a1ng ph\u1eb3ng \u0111\u1ed1i x\u1ee9ng v\u1edbi v\u1eadt qua g\u01b0\u01a1ng ph\u1eb3ng => kho\u1ea3ng c\u00e1ch t\u1eeb v\u1eadt \u0111\u1ebfn g\u01b0\u01a1ng = kho\u1ea3ng c\u00e1ch t\u1eeb \u1ea3nh c\u1ee7a v\u1eadt \u0111\u1ebfn g\u01b0\u01a1ng = 10:2 = 5m<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2204},{"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":"G\u01b0\u01a1ng c\u1ea7u l\u1ed3i l\u00e0:","select":["A. M\u1eb7t c\u1ea7u ph\u1ea3n x\u1ea1 t\u1ed1t \u00e1nh s\u00e1ng, m\u1eb7t ph\u1ea3n x\u1ea1 l\u00e0 m\u1eb7t l\u1ed3i","B. M\u1eb7t c\u1ea7u ph\u1ea3n x\u1ea1 t\u1ed1t \u00e1nh s\u00e1ng, m\u1eb7t ph\u1ea3n x\u1ea1 l\u00e0 m\u1eb7t l\u00f5m","C. M\u1eb7t c\u1ea7u l\u1ed3i trong su\u1ed1t","D. M\u1eb7t c\u1ea7u l\u1ed3i h\u1ea5p th\u1ee5 \u00e1nh s\u00e1ng"],"hint":"","explain":"<span class='basic_left'>G\u01b0\u01a1ng c\u1ea7u l\u1ed3i l\u00e0 g\u01b0\u01a1ng c\u00f3 m\u1eb7t c\u1ea7u ph\u1ea3n x\u1ea1 t\u1ed1t \u00e1nh s\u00e1ng, m\u1eb7t ph\u1ea3n x\u1ea1 l\u00e0 m\u1eb7t l\u1ed3i.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":2205},{"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":"G\u01b0\u01a1ng c\u1ea7u l\u1ed3i th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u1edf \u0111\u00e2u?","select":["A. G\u01b0\u01a1ng \u0111\u1eb7t \u1edf \u0111\u1ea7u c\u1ee7a \u00f4 t\u00f4 t\u1ea3i.","B. G\u01b0\u01a1ng \u0111\u1eb7t \u1edf nh\u1eefng \u0111o\u1ea1n \u0111\u01b0\u1eddng g\u1ea5p kh\u00fac.","C. G\u01b0\u01a1ng chi\u1ebfu h\u1eadu c\u1ee7a \u00f4 t\u00f4, xe m\u00e1y.","D. C\u1ea3 3 tr\u01b0\u1eddng h\u1ee3p tr\u00ean."],"hint":"","explain":"<span class='basic_left'>G\u01b0\u01a1ng c\u1ea7u l\u1ed3i th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng kh\u00e1 ph\u1ed5 bi\u1ebfn \u0111\u1ec3 l\u00e0m g\u01b0\u01a1ng xe \u00f4 t\u00f4, v\u00ec t\u1ea7m nh\u00ecn qua g\u01b0\u01a1ng c\u1ea7u l\u1ed3i r\u1ed9ng h\u01a1n g\u01b0\u01a1ng ph\u1eb3ng.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2206},{"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":"C\u00e2u ph\u00e1t bi\u1ec3u n\u00e0o d\u01b0\u1edbi \u0111\u00e2y l\u00e0 \u0111\u00fang khi n\u00f3i v\u1ec1 t\u00ednh ch\u1ea5t \u1ea3nh c\u1ee7a m\u1ed9t v\u1eadt t\u1ea1o b\u1edfi g\u01b0\u01a1ng c\u1ea7u l\u1ed3i?","select":["A. Kh\u00f4ng h\u1ee9ng \u0111\u01b0\u1ee3c tr\u00ean m\u00e0n, nh\u1ecf h\u01a1n v\u1eadt.","B. H\u1ee9ng \u0111\u01b0\u1ee3c tr\u00ean m\u00e0n, nh\u1ecf h\u01a1n v\u1eadt. ","C. H\u1ee9ng \u0111\u01b0\u1ee3c tr\u00ean m\u00e0n, b\u1eb1ng v\u1eadt","D. Kh\u00f4ng h\u1ee9ng \u0111\u01b0\u1ee3c tr\u00ean m\u00e0n, b\u1eb1ng v\u1eadt."],"hint":"","explain":"<span class='basic_left'>\u1ea2nh c\u1ee7a m\u1ed9t v\u1eadt t\u1ea1o b\u1edfi g\u01b0\u01a1ng c\u1ea7u l\u1ed3i kh\u00f4ng h\u1ee9ng \u0111\u01b0\u1ee3c tr\u00ean m\u00e0n, nh\u1ecf h\u01a1n v\u1eadt.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 .<\/span><\/span> ","column":1}]}],"id_ques":2207},{"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":"Chi\u1ebfu m\u1ed9t ch\u00f9m s\u00e1ng song song l\u00ean m\u1ed9t g\u01b0\u01a1ng c\u1ea7u l\u1ed3i, ta thu \u0111\u01b0\u1ee3c m\u1ed9t ch\u00f9m s\u00e1ng ph\u1ea3n x\u1ea1 c\u00f3 t\u00ednh ch\u1ea5t g\u00ec?","select":["A. song song","B. h\u1ed9i t\u1ee5","C. ph\u00e2n k\u00ec","D. kh\u00f4ng truy\u1ec1n theo \u0111\u01b0\u1eddng th\u1eb3ng"],"hint":"","explain":"<span class='basic_left'>Chi\u1ebfu m\u1ed9t ch\u00f9m s\u00e1ng song song l\u00ean m\u1ed9t g\u01b0\u01a1ng c\u1ea7u l\u1ed3i, ta thu \u0111\u01b0\u1ee3c m\u1ed9t ch\u00f9m s\u00e1ng ph\u00e2n k\u00ec.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2208},{"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":"G\u01b0\u01a1ng c\u1ea7u l\u00f5m l\u00e0:","select":["A. M\u1eb7t c\u1ea7u l\u00f5m ph\u1ea3n x\u1ea1 t\u1ed1t \u00e1nh s\u00e1ng","B. M\u1eb7t c\u1ea7u l\u1ed3i ph\u1ea3n xa t\u1ed1t \u00e1nh s\u00e1ng","C. M\u1eb7t c\u1ea7u l\u00f5m h\u1ea5p th\u1ee5 t\u1ed1t \u00e1nh s\u00e1ng","D. M\u1eb7t c\u1ea7u l\u1ed3i trong su\u1ed1t"],"hint":"","explain":"<span class='basic_left'>G\u01b0\u01a1ng c\u1ea7u l\u00f5m l\u00e0 m\u1eb7t c\u1ea7u l\u00f5m ph\u1ea3n x\u1ea1 t\u1ed1t \u00e1nh s\u00e1ng.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":2209},{"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":"Chi\u1ebfu m\u1ed9t ch\u00f9m tia t\u1edbi song song l\u00ean m\u1ed9t g\u01b0\u01a1ng c\u1ea7u l\u00f5m, ta thu \u0111\u01b0\u1ee3c m\u1ed9t ch\u00f9m tia ph\u1ea3n x\u1ea1 c\u00f3 t\u00ednh ch\u1ea5t n\u00e0o d\u01b0\u1edbi \u0111\u00e2y?","select":["A. song song","B. h\u1ed9i t\u1ee5","C. ph\u00e2n k\u00ec","D. kh\u00f4ng truy\u1ec1n theo \u0111\u01b0\u1eddng th\u1eb3ng"],"hint":"","explain":"<span class='basic_left'>Chi\u1ebfu m\u1ed9t ch\u00f9m tia t\u1edbi song song l\u00ean m\u1ed9t g\u01b0\u01a1ng c\u1ea7u l\u00f5m, ta thu \u0111\u01b0\u1ee3c m\u1ed9t ch\u00f9m tia h\u1ed9i t\u1ee5.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2210}],"lesson":{"save":0,"level":2}}