{"segment":[{"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":"M\u1eaft t\u00f4\u0301t khi nh\u00ecn v\u1eadt \u1edf r\u1ea5t xa ma\u0300 m\u1eaft kh\u00f4ng pha\u0309i \u0111i\u1ec1u ti\u1ebft th\u00ec \u1ea3nh c\u1ee7a v\u1eadt hi\u1ec7n tr\u00ean m\u00e0ng l\u01b0\u1edbi. Khi \u0111\u00f3 ti\u00eau \u0111i\u1ec3m c\u1ee7a th\u1ec3 th\u1ee7y tinh \u1edf v\u1ecb tr\u00ed ","select":["A. tr\u00ean th\u1ec3 th\u1ee7y tinh cu\u0309a m\u0103\u0301t.","B. tr\u01b0\u1edbc m\u00e0ng l\u01b0\u1edbi cu\u0309a m\u0103\u0301t.","C. tr\u00ean m\u00e0ng l\u01b0\u1edbi cu\u0309a m\u0103\u0301t.","D. sau m\u00e0ng l\u01b0\u1edbi cu\u0309a m\u0103\u0301t."],"hint":"","explain":"<span class='basic_left'><br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":3531},{"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\u1eaft t\u00f4\u0301t khi nh\u00ecn v\u1eadt \u1edf xa m\u00e0 m\u0103\u0301t kh\u00f4ng pha\u0309i \u0111i\u1ec1u ti\u1ebft th\u00ec \u1ea3nh c\u1ee7a v\u1eadt \u1edf ","select":["A. tr\u01b0\u1edbc m\u00e0ng l\u01b0\u1edbi cu\u0309a m\u0103\u0301t.","B. tr\u00ean m\u00e0ng l\u01b0\u1edbi cu\u0309a m\u0103\u0301t.","C. sau m\u00e0ng l\u01b0\u1edbi cu\u0309a m\u0103\u0301t.","D. tr\u01b0\u1edbc ti\u00eau \u0111i\u1ec3m c\u1ee7a th\u1ec3 thu\u1ef7 tinh cu\u0309a m\u0103\u0301t."],"hint":"","explain":"<span class='basic_left'><br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":3532},{"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\u1ec3 \u1ea3nh c\u1ee7a m\u1ed9t v\u1eadt c\u1ea7n quan s\u00e1t hi\u1ec7n r\u00f5 n\u00e9t tr\u00ean m\u00e0ng l\u01b0\u1edbi, m\u1eaft \u0111i\u1ec1u ti\u1ebft b\u1eb1ng c\u00e1ch ","select":["A. thay \u0111\u1ed5i kho\u1ea3ng c\u00e1ch t\u1eeb th\u1ec3 th\u1ee7y tinh \u0111\u1ebfn m\u00e0ng l\u01b0\u1edbi.","B. thay \u0111\u1ed5i \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a con ng\u01b0\u01a1i.","C. thay \u0111\u1ed5i ti\u00eau c\u1ef1 c\u1ee7a th\u1ec3 th\u1ee7y tinh.","D. thay \u0111\u1ed5i ti\u00eau c\u1ef1 c\u1ee7a th\u1ec3 th\u1ee7y tinh v\u00e0 kho\u1ea3ng c\u00e1ch t\u1eeb th\u1ec3 th\u1ee7y tinh \u0111\u1ebfn m\u00e0ng l\u01b0\u1edbi."],"hint":"","explain":"<span class='basic_left'><br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":3533},{"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 n\u00f3i v\u1ec1 m\u1eaft, c\u00e2u ph\u00e1t bi\u00ea\u0309u n\u00e0o sau \u0111\u00e2y l\u00e0 \u0111\u00fang? ","select":["A. \u0110i\u1ec3m c\u1ef1c vi\u1ec5n l\u00e0 \u0111i\u1ec3m xa nh\u1ea5t m\u00e0 khi \u0111\u1eb7t v\u1eadt t\u1ea1i \u0111\u00f3 m\u1eaft \u0111i\u1ec1u ti\u1ebft m\u1ea1nh nh\u1ea5t m\u1edbi nh\u00ecn r\u00f5.","B. \u0110i\u1ec3m c\u1ef1c c\u1eadn l\u00e0 \u0111i\u1ec3m g\u1ea7n nh\u1ea5t m\u00e0 khi \u0111\u1eb7t v\u1eadt t\u1ea1i \u0111\u00f3 m\u1eaft kh\u00f4ng \u0111i\u1ec1u ti\u1ebft v\u1eabn nh\u00ecn r\u00f5 \u0111\u01b0\u1ee3c.","C. Kh\u00f4ng th\u1ec3 quan s\u00e1t \u0111\u01b0\u1ee3c v\u1eadt khi \u0111\u1eb7t v\u1eadt \u1edf \u0111i\u1ec3m c\u1ef1c vi\u1ec5n c\u1ee7a m\u1eaft.","D. Khi quan s\u00e1t v\u1eadt \u1edf \u0111i\u1ec3m c\u1ef1c c\u1eadn, m\u1eaft ph\u1ea3i \u0111i\u1ec1u ti\u1ebft m\u1ea1nh nh\u1ea5t."],"hint":"","explain":"<span class='basic_left'><br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":3534},{"time":24,"part":[{"title":"","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"Khi n\u00f3i v\u1ec1 m\u1eaft, c\u00e2u ph\u00e1t bi\u1ec3u n\u00e0o sau \u0111\u00e2y l\u00e0 sai? ","select":["A. Khi nh\u00ecn v\u1eadt \u1edf xa th\u00ec ti\u00eau c\u1ef1 c\u1ee7a th\u1ec3 th\u1ee7y tinh m\u1eaft l\u1edbn nh\u1ea5t.","B. Khi nh\u00ecn v\u1eadt \u1edf xa v\u00f4 c\u1ef1c m\u1eaft ph\u1ea3i \u0111i\u1ec1u ti\u1ebft t\u1ed1i \u0111a.","C. Kho\u1ea3ng c\u00e1ch nh\u00ecn r\u00f5 ng\u1eafn nh\u1ea5t c\u1ee7a m\u1eaft thay \u0111\u1ed5i theo \u0111\u1ed9 tu\u1ed5i.","D. M\u1eaft t\u1ed1t, khi quan s\u00e1t m\u00e0 kh\u00f4ng ph\u1ea3i \u0111i\u1ec1u \u0111i\u1ec1u ti\u1ebft th\u00ec ti\u00eau \u0111i\u1ec3m c\u1ee7a th\u1ec3 thu\u1ef7 tinh n\u1eb1m tr\u00ean m\u00e0ng l\u01b0\u1edbi."],"hint":"","explain":"<span class='basic_left'><br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":3535},{"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":"M\u1eaft ng\u01b0\u1eddi c\u00f3 th\u1ec3 nh\u00ecn r\u00f5 m\u1ed9t v\u1eadt khi v\u1eadt \u0111\u00f3 n\u1eb1m trong kho\u1ea3ng ","select":["A. t\u1eeb \u0111i\u1ec3m c\u1ef1c c\u1eadn \u0111\u1ebfn m\u1eaft.","B. t\u1eeb \u0111i\u1ec3m c\u1ef1c vi\u1ec5n \u0111\u1ebfn v\u00f4 c\u1ef1c.","C. t\u1eeb \u0111i\u1ec3m c\u1ef1c c\u1eadn \u0111\u1ebfn \u0111i\u1ec3m c\u1ef1c vi\u1ec5n.","D. t\u1eeb \u0111i\u1ec3m c\u1ef1c vi\u1ec5n \u0111\u1ebfn m\u1eaft."],"hint":"","explain":"<span class='basic_left'><br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":3536},{"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":"Kho\u1ea3ng c\u00e1ch n\u00e0o sau \u0111\u00e2y \u0111\u01b0\u1ee3c coi l\u00e0 kho\u1ea3ng nh\u00ecn th\u1ea5y r\u00f5 ng\u1eafn nh\u1ea5t c\u1ee7a m\u1eaft? ","select":["A. Kho\u1ea3ng c\u00e1ch t\u1eeb \u0111i\u1ec3m c\u1ef1c c\u1eadn \u0111\u1ebfn \u0111i\u1ec3m c\u1ef1c vi\u1ec5n.","B. Kho\u1ea3ng c\u00e1ch t\u1eeb m\u1eaft \u0111\u1ebfn \u0111i\u1ec3m c\u1ef1c vi\u1ec5n.","C. Kho\u1ea3ng c\u00e1ch t\u1eeb m\u1eaft \u0111\u1ebfn \u0111i\u1ec3m c\u1ef1c c\u1eadn.","D. Kho\u1ea3ng c\u00e1ch t\u1eeb th\u1ec3 th\u1ee7y tinh \u0111\u1ebfn m\u00e0ng l\u01b0\u1edbi."],"hint":"","explain":"<span class='basic_left'><br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":3537},{"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\u1ec1 ph\u01b0\u01a1ng di\u1ec7n quang h\u1ecdc, m\u1eaft c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c xem nh\u01b0 ","select":["A. th\u1ea5u k\u00ednh h\u1ed9i t\u1ee5.","B. th\u1ea5u k\u00ednh ph\u00e2n k\u00ec.","C. m\u00e1y \u1ea3nh. ","D. bu\u1ed3ng t\u1ed1i c\u1ee7a m\u00e1y \u1ea3nh."],"hint":"","explain":"<span class='basic_left'><br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":3538},{"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":"\u1ea2nh c\u1ee7a m\u1ed9t v\u1eadt in tr\u00ean m\u00e0ng l\u01b0\u1edbi c\u1ee7a m\u1eaft l\u00e0 ","select":["A. \u1ea3nh \u1ea3o nh\u1ecf h\u01a1n v\u1eadt.","B. \u1ea3nh \u1ea3o l\u1edbn h\u01a1n v\u1eadt.","C. \u1ea3nh th\u1eadt nh\u1ecf h\u01a1n v\u1eadt.","D. \u1ea3nh th\u1eadt l\u1edbn h\u01a1n v\u1eadt."],"hint":"","explain":"<span class='basic_left'><br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":3539},{"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 nh\u00ecn r\u00f5 m\u1ed9t v\u1eadt th\u00ec \u1ea3nh c\u1ee7a v\u1eadt \u0111\u00f3 n\u1eb1m \u1edf ","select":["A. th\u1ec3 th\u1ee7y tinh c\u1ee7a m\u1eaft.","B. v\u00f5ng m\u1ea1c c\u1ee7a m\u1eaft.","C. con ng\u01b0\u01a1i c\u1ee7a m\u1eaft.","D. l\u00f2ng \u0111en c\u1ee7a m\u1eaft."],"hint":"","explain":"<span class='basic_left'><br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":3540},{"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\u1ec1 ph\u01b0\u01a1ng di\u1ec7n quang h\u1ecdc, th\u1ec3 th\u1ee7y tinh c\u1ee7a m\u1eaft gi\u1ed1ng nh\u01b0 ","select":["A. g\u01b0\u01a1ng c\u1ea7u l\u1ed3i.","B. g\u01b0\u01a1ng c\u1ea7u l\u00f5m.","C. th\u1ea5u k\u00ednh h\u1ed9i t\u1ee5.","D. th\u1ea5u k\u00ednh ph\u00e2n k\u1ef3."],"hint":"","explain":"<span class='basic_left'><br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":3541},{"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 \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a m\u1eaft m\u00e0 nh\u1edd \u0111\u00f3 m\u1eaft nh\u00ecn r\u00f5 \u0111\u01b0\u1ee3c v\u1eadt khi quan s\u00e1t c\u00e1c v\u1eadt xa, g\u1ea7n kh\u00e1c nhau l\u00e0 ","select":["A. th\u1ec3 th\u1ee7y tinh c\u00f3 th\u1ec3 thay \u0111\u1ed5i \u0111\u1ed9 cong.","B. m\u00e0ng l\u01b0\u1edbi c\u00f3 th\u1ec3 thay \u0111\u1ed5i \u0111\u1ed9 cong.","C. th\u1ec3 th\u1ee7y tinh c\u00f3 th\u1ec3 di chuy\u1ec3n \u0111\u01b0\u1ee3c.","D. m\u00e0ng l\u01b0\u1edbi c\u00f3 th\u1ec3 di chuy\u1ec3n \u0111\u01b0\u1ee3c."],"hint":"","explain":"<span class='basic_left'><br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":3542},{"time":24,"part":[{"title":"","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"Khi n\u00f3i v\u1ec1 m\u1eaft, c\u00e2u ph\u00e1t bi\u1ec3u n\u00e0o sau \u0111\u00e2y l\u00e0 sai? ","select":["A. M\u00e0ng l\u01b0\u1edbi c\u1ee7a m\u1eaft c\u00f3 vai tr\u00f2 nh\u01b0 phim trong m\u00e1y \u1ea3nh.","B. Th\u1ec3 th\u1ee7y tinh l\u00e0 m\u1ed9t th\u1ea5u k\u00ednh ph\u00e2n k\u00ec c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng thay \u0111\u1ed5i ti\u00eau c\u1ef1.","C. \u1ea2nh c\u1ee7a v\u1eadt tr\u00ean m\u00e0ng l\u01b0\u1edbi l\u00e0 l\u00e0 \u1ea3nh th\u1eadt, ng\u01b0\u1ee3c chi\u1ec1u v\u1edbi v\u1eadt.","D. Th\u1ec3 th\u1ee7y tinh c\u1ee7a m\u1eaft v\u00e0 v\u1eadt k\u00ednh c\u1ee7a m\u00e1y \u1ea3nh c\u00f3 ch\u1ee9c n\u0103ng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng."],"hint":"","explain":"<span class='basic_left'><br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":3543},{"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":"Ti\u00eau c\u1ef1 c\u1ee7a th\u1ec3 th\u1ee7y tinh l\u00e0 d\u00e0i nh\u1ea5t khi m\u1eaft quan s\u00e1t v\u1eadt \u1edf ","select":["A. \u0111i\u1ec3m c\u1ef1c c\u1eadn.","B. \u0111i\u1ec3m c\u1ef1c vi\u1ec5n.","C. kho\u1ea3ng c\u1ef1c c\u1eadn.","D. kho\u1ea3ng c\u1ef1c vi\u1ec5n."],"hint":"","explain":"<span class='basic_left'><br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":3544},{"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":"S\u1ef1 \u0111i\u1ec1u ti\u1ebft m\u1eaft l\u00e0 s\u1ef1 thay \u0111\u1ed5i ","select":["A. \u0111\u1ed9 cong c\u1ee7a th\u1ec3 th\u1ee7y tinh \u0111\u1ec3 \u1ea3nh c\u1ee7a m\u1ed9t v\u1eadt nh\u1ecf h\u01a1n v\u1eadt xu\u1ea5t hi\u1ec7n r\u00f5 n\u00e9t tr\u00ean m\u00e0ng l\u01b0\u1edbi. ","B. \u0111\u1ed9 cong c\u1ee7a th\u1ec3 th\u1ee7y tinh \u0111\u1ec3 \u1ea3nh c\u1ee7a m\u1ed9t v\u1eadt c\u00f9ng chi\u1ec1u v\u1edbi v\u1eadt xu\u1ea5t hi\u1ec7n r\u00f5 n\u00e9t tr\u00ean m\u00e0ng l\u01b0\u1edbi.","C. \u0111\u1ed9 cong c\u1ee7a th\u1ec3 th\u1ee7y tinh \u0111\u1ec3 \u1ea3nh c\u1ee7a m\u1ed9t v\u1eadt l\u1edbn h\u01a1n v\u1eadt xu\u1ea5t hi\u1ec7n r\u00f5 n\u00e9t tr\u00ean m\u00e0ng l\u01b0\u1edbi.","D. v\u1ecb tr\u00ed c\u1ee7a th\u1ec3 th\u1ee7y tinh \u0111\u1ec3 \u1ea3nh c\u1ee7a m\u1ed9t v\u1eadt nh\u1ecf h\u01a1n v\u1eadt xu\u1ea5t hi\u1ec7n r\u00f5 n\u00e9t tr\u00ean m\u00e0ng l\u01b0\u1edbi."],"hint":"","explain":"<span class='basic_left'><br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":3545},{"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\u1ec1 ph\u01b0\u01a1ng di\u1ec7n t\u1ea1o \u1ea3nh, m\u1eaft v\u00e0 m\u00e1y \u1ea3nh c\u00f3 t\u00ednh ch\u1ea5t gi\u1ed1ng nhau l\u00e0 ","select":["A. t\u1ea1o ra \u1ea3nh th\u1eadt, l\u1edbn h\u01a1n v\u1eadt.","B. t\u1ea1o ra \u1ea3nh th\u1eadt, b\u00e9 h\u01a1n v\u1eadt.","C. t\u1ea1o ra \u1ea3nh \u1ea3o, l\u1edbn h\u01a1n v\u1eadt.","D. t\u1ea1o ra \u1ea3nh \u1ea3o, b\u00e9 h\u01a1n v\u1eadt."],"hint":"","explain":"<span class='basic_left'><br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":3546},{"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 n\u00e0o sau \u0111\u00e2y l\u00e0 \u0111\u00fang? ","select":["A. M\u1eaft t\u01b0\u01a1ng \u0111\u1ed1i gi\u1ed1ng v\u1edbi m\u00e1y \u1ea3nh, nh\u01b0ng tinh vi h\u01a1n m\u00e1y \u1ea3nh.","B. M\u1eaft ho\u00e0n to\u00e0n kh\u00f4ng gi\u1ed1ng v\u1edbi m\u00e1y \u1ea3nh.","C. M\u1eaft t\u01b0\u01a1ng \u0111\u1ed1i gi\u1ed1ng v\u1edbi m\u00e1y \u1ea3nh, nh\u01b0ng kh\u00f4ng tinh vi b\u1eb1ng m\u00e1y \u1ea3nh.","D. M\u1eaft ho\u00e0n to\u00e0n gi\u1ed1ng v\u1edbi m\u00e1y \u1ea3nh."],"hint":"","explain":"<span class='basic_left'>Gi\u1ed1ng nhau: <br\/>Th\u1ec3 th\u1ee7y tinh v\u00e0 v\u1eadt k\u00ednh d\u1ec1u l\u00e0 th\u1ea5u k\u00ednh h\u1ed9i t\u1ee5. <br\/> Phim v\u00e0 m\u00e0ng l\u01b0\u1edbi \u0111\u1ec1u c\u00f3 t\u00e1c d\u1ee5ng nh\u01b0 m\u00e0n h\u1ee9ng \u1ea3nh <br\/>Kh\u00e1c nhau: <br\/>Th\u1ec3 th\u1ee7y tinh c\u00f3 ti\u00eau c\u1ef1 thay \u0111\u1ed5i. <br\/>V\u1eadt k\u00ednh c\u00f3 ti\u00eau c\u1ef1 kh\u00f4ng thay \u0111\u1ed5i.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":3547},{"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 th\u1ec3 coi con m\u1eaft l\u00e0 m\u1ed9t d\u1ee5ng c\u1ee5 quang h\u1ecdc t\u1ea1o ra ","select":["A. \u1ea2nh th\u1eadt c\u1ee7a v\u1eadt, nh\u1ecf h\u01a1n v\u1eadt.","B. \u1ea2nh th\u1eadt c\u1ee7a v\u1eadt, c\u00f9ng chi\u1ec1u v\u1edbi v\u1eadt.","C. \u1ea2nh \u1ea3o c\u1ee7a v\u1eadt, nh\u1ecf h\u01a1n v\u1eadt.","D. \u1ea2nh \u1ea3o c\u1ee7a v\u1eadt, c\u00f9ng chi\u1ec1u v\u1edbi v\u1eadt."],"hint":"","explain":"<span class='basic_left'>C\u00f3 th\u1ec3 coi con m\u1eaft l\u00e0 m\u1ed9t d\u1ee5ng c\u1ee5 quang h\u1ecdc t\u1ea1o ra v\u00ec: <br\/>\u1ea2nh qua m\u1eaft cho \u1ea3nh th\u1eadt, nh\u1ecf h\u01a1n v\u1eadt <br\/>\u1ea2nh c\u1ee7a v\u1eadt hi\u1ec7n tr\u00ean m\u00e0ng l\u01b0\u1edbi ng\u01b0\u1ee3c chi\u1ec1u v\u1edbi v\u1eadt nh\u01b0ng ta v\u1eabn kh\u00f4ng th\u1ea5y v\u1eadt b\u1ecb l\u1ed9n ng\u01b0\u1ee3c l\u00e0 do ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ea7n kinh <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":3548},{"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":"Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0o d\u01b0\u1edbi \u0111\u00e2y, m\u1eaft kh\u00f4ng ph\u1ea3i \u0111i\u1ec1u ti\u1ebft? ","select":["A. Nh\u00ecn v\u1eadt \u1edf \u0111i\u1ec3m c\u1ef1c vi\u1ec5n.","B. Nh\u00ecn v\u1eadt \u1edf \u0111i\u1ec3m c\u1ef1c c\u1eadn.","C. Nh\u00ecn v\u1eadt n\u1eb1m trong kho\u1ea3ng t\u1eeb c\u1ef1c c\u1eadn \u0111\u1ebfn c\u1ef1c vi\u1ec5n","D. Nh\u00ecn v\u1eadt \u0111\u1eb7t g\u1ea7n m\u1eaft h\u01a1n \u0111i\u1ec3m c\u1ef1c c\u1eadn."],"hint":"","explain":"<span class='basic_left'>\u0110\u1ed9 cong c\u1ee7a thu\u1ef7 tinh th\u1ec3 l\u00e0 b\u00e9 nh\u1ea5t, m\u1eaft d\u1eb9t nh\u1ea5t - <br\/>Ti\u00eau c\u1ef1 c\u1ee7a th\u1ea5u k\u00ednh thu\u1ef7 tinh th\u1ec3 l\u00e0 l\u1edbn nh\u1ea5t $f={{f}_{max}}$ <br\/>M\u1eaft l\u00fac n\u00e0y nh\u00ecn v\u1eadt \u1edf \u0111i\u1ec3m c\u1ef1c vi\u1ec5n. <br\/>T\u1ee9c v\u1eadt c\u1ea7n quan s\u00e1t \u0111\u1eb7t \u1edf \u0111i\u1ec3m c\u1ef1c vi\u1ec5n c\u1ee7a m\u1eaft.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":3549},{"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":"Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0o d\u01b0\u1edbi \u0111\u00e2y, m\u1eaft ph\u1ea3i \u0111i\u1ec1u ti\u1ebft m\u1ea1nh nh\u1ea5t? ","select":["A. Nh\u00ecn v\u1eadt \u1edf \u0111i\u1ec3m c\u1ef1c vi\u1ec5n.","B. Nh\u00ecn v\u1eadt \u1edf \u0111i\u1ec3m c\u1ef1c c\u1eadn","C. Nh\u00ecn v\u1eadt n\u1eb1m trong kho\u1ea3ng t\u1eeb c\u1ef1c c\u1eadn \u0111\u1ebfn c\u1ef1c vi\u1ec5n","D. Nh\u00ecn v\u1eadt \u0111\u1eb7t g\u1ea7n m\u1eaft h\u01a1n \u0111i\u1ec3m c\u1ef1c c\u1eadn"],"hint":"","explain":"<span class='basic_left'>Khi t\u1edbi \u0111i\u1ec3m c\u1ef1c c\u1eadn (${{C}_{c}}$ ) \u0111\u1ed9 cong c\u1ee7a thu\u1ef7 tinh th\u1ec3 l\u00e0 l\u1edbn nh\u1ea5t, $f={{f}_{\\min }}$ ,m\u1eaft \u0111i\u1ec1u ti\u1ebft m\u1ea1nh nh\u1ea5t. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 .<\/span><\/span> ","column":2}]}],"id_ques":3550}],"lesson":{"save":0,"level":2}}