{"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":"C\u00e2u n\u00e0o sau \u0111\u00e2y \u0111\u00fang khi n\u00f3i v\u1ec1 \u1ea3nh c\u1ee7a g\u01b0\u01a1ng ph\u1eb3ng:","select":["A. \u1ea2nh \u1ea3o, h\u1ee9ng \u0111\u01b0\u1ee3c tr\u00ean m\u00e0n ch\u1eafn.","B. \u1ea2nh th\u1eadt, h\u1ee9ng \u0111\u01b0\u1ee3c tr\u00ean m\u00e0n ch\u1eafn.","C. \u1ea2nh th\u1eadt, kh\u00f4ng h\u1ee9ng \u0111\u01b0\u1ee3c tr\u00ean m\u00e0n ch\u1eafn.","D. \u1ea2nh \u1ea3o, kh\u00f4ng h\u1ee9ng \u0111\u01b0\u1ee3c tr\u00ean m\u00e0n ch\u1eafn."],"hint":"","explain":"<span class='basic_left'>V\u00ec t\u00ednh ch\u1ea5t c\u1ee7a \u1ea3nh qua 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 D.<\/span><\/span> ","column":1}]}],"id_ques":2131},{"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":"Tr\u01b0\u1eddng h\u1ee3p n\u00e0o d\u01b0\u1edbi \u0111\u00e2y kh\u00f4ng th\u1ec3 coi l\u00e0 m\u1ed9t g\u01b0\u01a1ng ph\u1eb3ng?","select":["A. M\u1eb7t k\u00ednh tr\u00ean b\u00e0n g\u1ed7.","B. M\u1eb7t n\u01b0\u1edbc trong ph\u1eb3ng l\u1eb7ng.","C. M\u00e0n h\u00ecnh ph\u1eb3ng tivi.","D. T\u1ea5m l\u1ecbch treo t\u01b0\u1eddng."],"hint":"","explain":"<span class='basic_left'>V\u00ec soi qua t\u1ea5m l\u1ecbch treo t\u01b0\u1eddng kh\u00f4ng th\u1ea5y \u1ea3nh.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2132},{"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":"C\u00e2u n\u00e0o sau \u0111\u00e2y sai khi n\u00f3i v\u1ec1 \u1ea3nh c\u1ee7a m\u1ed9t v\u1eadt t\u1ea1o b\u1edfi g\u01b0\u01a1ng ph\u1eb3ng? ","select":["A. \u1ea2nh l\u1edbn b\u1eb1ng v\u1eadt. ","B. \u1ea2nh \u0111\u1ed1i x\u1ee9ng v\u1edbi v\u1eadt qua g\u01b0\u01a1ng.","C. \u1ea2nh nh\u1ecf h\u01a1n v\u1eadt.","D. \u1ea2nh l\u00e0 \u1ea3nh \u1ea3o."],"hint":"","explain":"<span class='basic_left'>V\u00ec \u1ea3nh t\u1ea1o b\u1edfi g\u01b0\u01a1ng ph\u1eb3ng l\u00e0 \u1ea3nh \u1ea3o l\u1edbn b\u1eb1ng v\u1eadt, kho\u1ea3ng c\u00e1ch t\u1eeb m\u1ed9t \u0111i\u1ec3m c\u1ee7a v\u1eadt \u0111\u1ebfn g\u01b0\u01a1ng b\u1eb1ng kho\u1ea3ng c\u00e1ch t\u1eeb \u1ea3nh c\u1ee7a \u0111i\u1ec3m \u0111\u00f3 \u0111\u1ebfn g\u01b0\u01a1ng.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2133},{"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":"M\u1ed9t ng\u01b0\u1eddi cao $1,6m$ \u0111\u1ee9ng tr\u01b0\u1edbc g\u01b0\u01a1ng ph\u1eb3ng, cho \u1ea3nh c\u00e1ch ng\u01b0\u1eddi $2,5m$. H\u1ecfi ng\u01b0\u1eddi \u0111\u00f3 c\u00e1ch g\u01b0\u01a1ng bao nhi\u00eau?","select":["A. 5m","B. 1,25m","C. 4m","D. 3m"],"hint":"","explain":"<span class='basic_left'>Kho\u1ea3ng c\u00e1ch t\u1eeb v\u1eadt \u0111\u1ebfn g\u01b0\u01a1ng b\u1eb1ng kho\u1ea3ng c\u00e1ch t\u1eeb \u1ea3nh \u0111\u1ebfn g\u01b0\u01a1ng. <br\/> N\u00ean kho\u1ea3ng c\u00e1ch gi\u1eefa ng\u01b0\u1eddi v\u00e0 \u1ea3nh b\u1eb1ng hai l\u1ea7n kho\u1ea3ng c\u00e1ch gi\u1eefa ng\u01b0\u1eddi v\u00e0 g\u01b0\u01a1ng<br\/> V\u1eady ng\u01b0\u1eddi \u0111\u00f3 c\u00e1ch g\u01b0\u01a1ng $1,25m$. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2134},{"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":"Ph\u00e1t bi\u1ec3u n\u00e0o sau \u0111\u00e2y \u0111\u00fang ?","select":["A. \u1ea2nh c\u1ee7a m\u1ed9t v\u1eadt qua g\u01b0\u01a1ng ph\u1eb3ng kh\u00f4ng h\u1ee9ng \u0111\u01b0\u1ee3c tr\u00ean m\u00e0n ch\u1eafn g\u1ecdi l\u00e0 \u1ea3nh \u1ea3o.","B. \u1ea2nh c\u1ee7a m\u1ed9t v\u1eadt qua g\u01b0\u01a1ng ph\u1eb3ng h\u1ee9ng \u0111\u01b0\u1ee3c tr\u00ean m\u00e0n l\u00e0 \u1ea3nh \u1ea3o.","C. \u1ea2nh c\u1ee7a m\u1ed9t v\u1eadt qua g\u01b0\u01a1ng ph\u1eb3ng c\u00f3 th\u1ec3 s\u1edd \u0111\u01b0\u1ee3c. ","D. \u1ea2nh c\u1ee7a m\u1ed9t v\u1eadt qua g\u01b0\u01a1ng ph\u1eb3ng l\u00e0 \u1ea3nh th\u1eadt."],"hint":"","explain":"<span class='basic_left'>V\u00ec \u1ea3nh qua g\u01b0\u01a1ng ph\u1eb3ng l\u00e0 \u1ea3nh \u1ea3o, \u1ea3nh \u1ea3o l\u00e0 \u1ea3nh 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 A.<\/span><\/span> ","column":1}]}],"id_ques":2135},{"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 h\u1ed9i t\u1ee5 t\u1edbi g\u01b0\u01a1ng ph\u1eb3ng, h\u1ecfi ch\u00f9m tia ph\u1ea3n x\u1ea1 l\u00e0 ch\u00f9m tia g\u00ec? ","select":["A. Ch\u00f9m tia ph\u00e2n k\u00ec.","B. Ch\u00f9m tia h\u1ed9i t\u1ee5.","C. Ch\u00f9m tia song song.","D. Kh\u00f4ng x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c."],"hint":"","explain":"<span class='basic_left'>\u1ea2nh c\u1ee7a m\u1ed9t v\u1eadt t\u1ea1o b\u1edfi g\u01b0\u01a1ng ph\u1eb3ng \u0111\u1ed1i x\u1ee9ng v\u1edbi v\u1eadt qua g\u01b0\u01a1ng, n\u00ean ch\u00f9m tia ph\u1ea3n x\u1ea1 c\u0169ng l\u00e0 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":2136},{"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":"Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0o sau \u0111\u00e2y kh\u00f4ng li\u00ean quan \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng?","select":["A. M\u1eb7t n\u01b0\u1edbc h\u1ed3 G\u01b0\u01a1m in b\u00f3ng th\u00e1p R\u00f9a.","B. \u0110\u1ee9ng tr\u01b0\u1edbc g\u01b0\u01a1ng th\u1ea5y \u1ea3nh m\u00ecnh trong g\u01b0\u01a1ng.","C. \u0110\u1ee9ng d\u01b0\u1edbi tr\u1eddi n\u1eafng th\u1ea5y b\u00f3ng m\u00ecnh in d\u01b0\u1edbi \u0111\u1ea5t.","D. Ca\u0301c c\u00e2u tra\u0309 l\u01a1\u0300i A,B,C \u0111\u00ea\u0300u \u0111u\u0301ng."],"hint":"","explain":"<span class='basic_left'>V\u00ec b\u00f3ng m\u00ecnh in d\u01b0\u1edbi \u0111\u1ea5t kh\u00f4ng ph\u1ea3i \u1ea3nh m\u00e0 ch\u1ec9 l\u00e0 \u00e1nh s\u00e1ng kh\u00f4ng \u0111i qua \u0111\u01b0\u1ee3c ng\u01b0\u1eddi t\u1ea1o th\u00e0nh b\u00f3ng t\u1ed1i tr\u00ean m\u1eb7t \u0111\u1ea5t.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2137},{"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":"Nh\u1eadn x\u00e9t n\u00e0o d\u01b0\u1edbi \u0111\u00e2y v\u1ec1 t\u00e1c d\u1ee5ng c\u1ee7a m\u1ed9t t\u1ea5m k\u00ednh ph\u1eb3ng l\u00e0 sai: ","select":["A. T\u1ea1o ra \u1ea3nh c\u1ee7a m\u1ed9t v\u1eadt \u0111\u1eb7t tr\u01b0\u1edbc n\u00f3. ","B. Cho ta nh\u00ecn th\u1ea5y c\u00e1c v\u1eadt \u1edf ph\u00eda b\u00ean kia t\u1ea5m k\u00ednh. ","C. C\u00e1c v\u1eadt qua t\u1ea5m k\u00ednh \u0111\u1ec1u cho \u1ea3nh \u1ea3o.","D. \u1ea2nh c\u1ee7a m\u1ed9t v\u1eadt h\u1ee9ng \u0111\u01b0\u1ee3c tr\u00ean m\u00e0n cho n\u00ean ta m\u1edbi nh\u00ecn th\u1ea5y."],"hint":"","explain":"<span class='basic_left'>V\u00ec \u1ea3nh t\u1ea1o b\u1edfi t\u1ea5m k\u00ednh ph\u1eb3ng c\u00f3 t\u00ednh ch\u1ea5t nh\u01b0 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 D.<\/span><\/span> ","column":1}]}],"id_ques":2138},{"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":"Khi nh\u00ecn v\u00e0o v\u0169ng n\u01b0\u1edbc m\u1ed9t h\u1ecdc sinh nh\u00ecn th\u1ea5y \u1ea3nh c\u1ee7a m\u1ed9t c\u1ed9t \u0111i\u1ec7n \u1edf xa. C\u00e2u gi\u1ea3i th\u00edch n\u00e0o sau \u0111\u00e2y l\u00e0 \u0111\u00fang nh\u1ea5t?","select":["A. V\u00ec m\u1eb7t n\u01b0\u1edbc t\u1ea1o ra \u1ea3nh c\u1ee7a v\u1eadt nh\u1edd hi\u1ec7n t\u01b0\u01a1ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng.","B. V\u00ec m\u1eb7t n\u01b0\u1edbc c\u00f3 th\u1ec3 h\u1ea5p th\u1ee5 \u00e1nh s\u00e1ng.","C. V\u00ec m\u1eb7t n\u01b0\u1edbc c\u00f3 th\u1ec3 truy\u1ec1n h\u00ecnh \u1ea3nh.","D. T\u1ea5t c\u1ea3 \u0111\u1ec1u sai."],"hint":"","explain":"<span class='basic_left'>M\u1eb7t n\u01b0\u1edbc \u0111\u00f3ng vai tr\u00f2 nh\u01b0 g\u01b0\u01a1ng ph\u1eb3ng t\u1ea1o ra \u1ea3nh c\u1ee7a v\u1eadt nh\u1edd hi\u1ec7n t\u01b0\u01a1ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":2139},{"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":"M\u1ed9t v\u1eadt c\u00e1ch g\u01b0\u01a1ng ph\u1eb3ng 1m, th\u00ec \u1ea3nh c\u1ee7a v\u1eadt c\u00e1ch g\u01b0\u01a1ng ph\u1eb3ng:","select":["A. 1m","B. 2m","C. 3m","D. 4m"],"hint":"","explain":"<span class='basic_left'>\u1ea2nh c\u1ee7a m\u1ed9t v\u1eadt \u0111\u1ed1i x\u1ee9ng v\u1edbi v\u1eadt qua g\u01b0\u01a1ng ph\u1eb3ng, suy ra kho\u1ea3ng c\u00e1ch t\u1eeb v\u1eadt \u0111\u1ebfn g\u01b0\u01a1ng b\u1eb1ng kho\u1ea3ng c\u00e1ch t\u1eeb \u1ea3nh \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":2140},{"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\/> C\u00e1c tia s\u00e1ng t\u1eeb \u0111i\u1ec3m s\u00e1ng S t\u1edbi g\u01b0\u01a1ng ph\u1eb3ng cho ........ c\u00f3 \u0111\u01b0\u1eddng k\u00e9o d\u00e0i \u0111i qua \u1ea3nh \u1ea3o S\u2019","select":["A. Tia t\u1edbi","B. Tia h\u1ed9i t\u1ee5 ","C. Tia ph\u1ea3n x\u1ea1","D. Tia ph\u00e2n k\u00ec"],"hint":"","explain":"<span class='basic_left'>C\u00e1c tia s\u00e1ng t\u1eeb \u0111i\u1ec3m s\u00e1ng S t\u1edbi g\u01b0\u01a1ng ph\u1eb3ng cho tia ph\u1ea3n x\u1ea1 c\u00f3 \u0111\u01b0\u1eddng k\u00e9o d\u00e0i \u0111i qua \u1ea3nh \u1ea3o S\u2019<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2141},{"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":"Khi tia t\u1edbi h\u1ee3p v\u1edbi \u0111\u01b0\u1eddng vu\u00f4ng g\u00f3c v\u1edbi m\u1eb7t g\u01b0\u01a1ng ph\u1eb3ng m\u1ed9t g\u00f3c $30{}^\\circ $ th\u00ec g\u00f3c ph\u1ea3n x\u1ea1 b\u1eb1ng :","select":["A. $60{}^\\circ $","B. $30{}^\\circ $","C. $20{}^\\circ $","D. $150{}^\\circ $"],"hint":"","explain":"<span class='basic_left'>\u0110\u01b0\u1eddng vu\u00f4ng g\u00f3c v\u1edbi m\u1eb7t g\u01b0\u01a1ng ph\u1eb3ng l\u00e0 ph\u00e1p tuy\u1ebfn.Tia t\u1edbi h\u1ee3p v\u1edbi ph\u00e1p tuy\u1ebfn g\u00f3c $30{}^\\circ $ => g\u00f3c t\u1edbi = $30{}^\\circ $.<br\/>G\u00f3c ph\u1ea3n x\u1ea1 = g\u00f3c t\u1edbi = $30{}^\\circ $.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2142},{"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":"Chi\u1ebfu m\u1ed9t tia s\u00e1ng t\u1edbi l\u00ean m\u1ed9t g\u01b0\u01a1ng ph\u1eb3ng ta thu \u0111\u01b0\u1ee3c tia ph\u1ea3n x\u1ea1 h\u1ee3p v\u1edbi tia t\u1edbi m\u1ed9t g\u00f3c $80{}^\\circ $,v\u1eady g\u00f3c ph\u1ea3n x\u1ea1 l\u00e0:","select":["A. $40{}^\\circ $","B. $60{}^\\circ $","C. $80{}^\\circ $","D. $100{}^\\circ $"],"hint":"","explain":"<span class='basic_left'>G\u00f3c h\u1ee3p b\u1edfi tia t\u1edbi v\u00e0 tia ph\u1ea3n x\u1ea1 b\u1eb1ng 2 l\u1ea7n g\u00f3c t\u1edbi.<br\/>G\u00f3c t\u1edbi = g\u00f3c ph\u1ea3n x\u1ea1 = 80:2 = $40{}^\\circ $<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2143},{"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 \u1ea3nh c\u1ee7a m\u1ed9t v\u1eadt trong g\u01b0\u01a1ng ph\u1eb3ng?","select":["A. V\u00ec c\u00f3 \u00e1nh s\u00e1ng t\u1eeb v\u1eadt truy\u1ec1n th\u1eb3ng v\u00e0o m\u1eaft ta.","B. V\u00ec m\u1eaft ta chi\u1ebfu ra nh\u1eefng tia s\u00e1ng \u0111\u1ebfn g\u01b0\u01a1ng r\u1ed3i quay l\u1ea1i chi\u1ebfu s\u00e1ng v\u1eadt.","C. V\u00ec c\u00f3 \u00e1nh s\u00e1ng t\u1eeb v\u1eadt truy\u1ec1n \u0111\u1ebfn g\u01b0\u01a1ng, ph\u1ea3n x\u1ea1 tr\u00ean g\u01b0\u01a1ng r\u1ed3i truy\u1ec1n t\u1eeb \u1ea3nh \u0111\u1ebfn m\u1eaft ta.","D. V\u00ec c\u00f3 \u00e1nh s\u00e1ng t\u1eeb v\u1eadt v\u00f2ng qua sau g\u01b0\u01a1ng r\u1ed3i \u0111\u1ebfn m\u1eaft ta."],"hint":"","explain":"<span class='basic_left'>V\u00ec c\u00f3 \u00e1nh s\u00e1ng t\u1eeb v\u1eadt truy\u1ec1n \u0111\u1ebfn g\u01b0\u01a1ng, ph\u1ea3n x\u1ea1 tr\u00ean g\u01b0\u01a1ng r\u1ed3i truy\u1ec1n t\u1eeb \u1ea3nh \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":2144},{"time":24,"part":[{"title":"","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"Nh\u1eadn x\u00e9t n\u00e0o sau \u0111\u00e2y l\u00e0 sai khi so s\u00e1nh t\u00e1c d\u1ee5ng c\u1ee7a g\u01b0\u01a1ng ph\u1eb3ng v\u1edbi m\u1ed9t t\u1ea5m k\u00ednh ph\u1eb3ng?","select":["A. Nh\u00ecn v\u00e0o g\u01b0\u01a1ng ph\u1eb3ng ta kh\u00f4ng th\u1ec3 th\u1ea5y \u0111\u01b0\u1ee3c c\u00e1c v\u1eadt \u1edf ph\u00eda sau c\u1ee7a g\u01b0\u01a1ng.","B. Nh\u00ecn v\u00e0o t\u1ea5m k\u00ednh ta th\u1ea5y \u0111\u01b0\u1ee3c v\u1eadt \u1edf ph\u00eda sau n\u00f3.","C. G\u01b0\u01a1ng ph\u1eb3ng v\u00e0 t\u1ea5m k\u00ednh ph\u1eb3ng \u0111\u1ec1u t\u1ea1o \u0111\u01b0\u1ee3c \u1ea3nh c\u1ee7a v\u1eadt \u0111\u1eb7t tr\u01b0\u1edbc ch\u00fang. ","D. Ta kh\u00f4ng th\u1ec3 th\u1ea5y \u0111\u01b0\u1ee3c c\u00e1c v\u1eadt \u1edf ph\u00eda b\u00ean kia t\u1ea5m k\u00ednh"],"hint":"","explain":"<span class='basic_left'>G\u01b0\u01a1ng v\u00e0 t\u1ea5m k\u00ednh \u0111\u1ec1u t\u1ea1o \u0111\u01b0\u1ee3c \u1ea3nh \u1ea3o c\u1ee7a v\u1eadt \u0111\u1eb7t tr\u01b0\u1edbc ch\u00fang. G\u01b0\u01a1ng kh\u00f4ng cho ph\u00e9p ta nh\u00ecn \u0111\u01b0\u1ee3c c\u00e1c v\u1eadt sau n\u00f3. T\u1ea5m k\u00ednh cho ph\u00e9p ta nh\u00ecn \u0111\u01b0\u1ee3c c\u00e1c v\u1eadt sau n\u00f3.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2145},{"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":"\u0110\u1ec3 v\u1ebd \u1ea3nh c\u1ee7a m\u1ed9t v\u1eadt s\u00e1ng AB t\u1ea1o b\u1edfi g\u01b0\u01a1ng ph\u1eb3ng ta s\u1ebd: ","select":["A. V\u1ebd \u1ea3nh A\u2019 c\u1ee7a \u0111i\u1ec3m A","B. V\u1ebd \u1ea3nh A\u2019 c\u1ee7a \u0111i\u1ec3m A, v\u1ebd \u1ea3nh B\u2019 c\u1ee7a \u0111i\u1ec3m B v\u00e0 n\u1ed1i A\u2019 v\u1edbi B\u2019","C. V\u1ebd \u1ea3nh B\u2019 c\u1ee7a B, v\u1ebd \u1ea3nh A\u2019 c\u1ee7a A","D. V\u1ebd \u1ea3nh B\u2019 c\u1ee7a B"],"hint":"","explain":"<span class='basic_left'>\u0110\u1ec3 v\u1ebd \u1ea3nh c\u1ee7a m\u1ed9t v\u1eadt AB ta v\u1ebd hai \u1ea3nh c\u1ee7a n\u00f3 r\u1ed3i n\u1ed1i l\u1ea1i.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2146},{"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":"Tia t\u1edbi h\u1ee3p v\u1edbi m\u1eb7t ph\u1eb3ng g\u01b0\u01a1ng m\u1ed9t g\u00f3c $40{}^\\circ $, h\u1ecfi g\u00f3c ph\u1ea3n x\u1ea1 b\u1eb1ng bao nhi\u00eau?","select":["A. $20{}^\\circ $","B. $30{}^\\circ $","C. $50{}^\\circ $","D. $40{}^\\circ $"],"hint":"","explain":"<span class='basic_left'>Tia t\u1edbi h\u1ee3p m\u1eb7t ph\u1eb3ng g\u01b0\u01a1ng m\u1ed9t g\u00f3c $40{}^\\circ $<br\/>G\u00f3c t\u1edbi = 90 - 40 = $50{}^\\circ $.<br\/>G\u00f3c ph\u1ea3n x\u1ea1 = g\u00f3c t\u1edbi = $50{}^\\circ $.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2147},{"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\u1ec3m s\u00e1ng S \u0111\u1eb7t tr\u01b0\u1edbc g\u01b0\u01a1ng ph\u1eb3ng m\u1ed9t \u0111o\u1ea1n 25cm cho \u1ea3nh S\u2019, x\u00e1c \u0111\u1ecbnh kho\u1ea3ng c\u00e1c SS\u2019","select":["A. 50cm","B. 25cm","C. 75cm","D. 12,5cm"],"hint":"","explain":"<span class='basic_left'>\u1ea2nh c\u1ee7a m\u1ed9t v\u1eadt \u0111\u1ed1i x\u1ee9ng v\u1edbi v\u1eadt qua g\u01b0\u01a1ng. Kho\u1ea3ng c\u00e1ch SS\u2019 b\u1eb1ng 2 l\u1ea7n kho\u1ea3ng c\u00e1ch t\u1eeb S \u0111\u1ebfn g\u01b0\u01a1ng, b\u1eb1ng: 25 x 2 = 50cm.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2148},{"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":"Khi soi g\u01b0\u01a1ng ta th\u1ea5y:","select":["A. \u1ea2nh th\u1eadt \u1edf sau g\u01b0\u01a1ng.","B. \u1ea2nh th\u1eadt \u1edf tr\u01b0\u1edbc g\u01b0\u01a1ng.","C. \u1ea2nh \u1ea3o \u1edf tr\u01b0\u1edbc g\u01b0\u01a1ng.","D. \u1ea2nh \u1ea3o \u1edf sau g\u01b0\u01a1ng."],"hint":"","explain":"<span class='basic_left'>\u1ea2nh c\u1ee7a v\u1eadt qua g\u01b0\u01a1ng l\u00e0 \u1ea3nh \u1ea3o \u0111\u1ed1i x\u1ee9ng v\u1edbi v\u1eadt qua g\u01b0\u01a1ng. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2149},{"time":24,"part":[{"title":"","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"Ch\u1ecdn c\u00e2u tr\u1ea3 l\u1eddi sai?","select":["A. G\u01b0\u01a1ng ph\u1eb3ng l\u00e0 ph\u1ea7n m\u1eb7t ph\u1eb3ng nh\u1eb5n ph\u1ea3n x\u1ea1 h\u1ea7u nh\u01b0 ho\u00e0n to\u00e0n \u00e1nh s\u00e1ng chi\u1ebfu t\u1edbi.","B. Ch\u00f9m tia t\u1edbi g\u01b0\u01a1ng ph\u1eb3ng l\u00e0 h\u1ed9i t\u1ee5 th\u00ec ch\u00f9m tia ph\u1ea3n x\u1ea1 l\u00e0 ph\u00e2n k\u00ec.","C. Ch\u00f9m tia t\u1edbi g\u01b0\u01a1ng ph\u1eb3ng l\u00e0 ph\u00e2n k\u00ec th\u00ec ch\u00f9m tia ph\u1ea3n x\u1ea1 l\u00e0 h\u1ed9i t\u1ee5.","D. Ch\u00f9m tia t\u1edbi g\u01b0\u01a1ng ph\u1eb3ng l\u00e0 ph\u00e2n k\u00ec th\u00ec ch\u00f9m tia ph\u1ea3n x\u1ea1 c\u0169ng l\u00e0 ph\u00e2n k\u00ec."],"hint":"","explain":"<span class='basic_left'>Ch\u00f9m tia t\u1edbi g\u01b0\u01a1ng ph\u1eb3ng l\u00e0 ph\u00e2n k\u00ec th\u00ec ch\u00f9m tia ph\u1ea3n x\u1ea1 l\u00e0 h\u1ed9i t\u1ee5 v\u00e0 ng\u01b0\u1ee3c l\u1ea1i.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n sai l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2150}],"lesson":{"save":0,"level":2}}