{"common":{"save":0,"post_id":"8214","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"9281","post_id":"8214","mon_id":"1159533","chapter_id":"1159595","question":"<p>M\u1ed9t tia sáng \u0111i qua tiêu \u0111i\u1ec3m c\u1ee7a th\u1ea5u kính h\u1ed9i t\u1ee5 tr\u01b0\u1edbc khi t\u1edbi th\u1ea5u kính. Sau khi \u0111i qua th\u1ea5u kính, tia sáng s\u1ebd:<\/p>","options":["A. Song song v\u1edbi tr\u1ee5c chính.","B. Ti\u1ebfp t\u1ee5c \u0111i qua tiêu \u0111i\u1ec3m.","C. Phân k\u1ef3 ra xa nhau.","D. \u0110i qua quang tâm."],"correct":"1","level":"2","hint":"","answer":"<p><br \/>\u0110áp án: A. Song song v\u1edbi tr\u1ee5c chính.<br \/>Gi\u1ea3i thích:<br \/>Theo tính ch\u1ea5t c\u1ee7a th\u1ea5u kính h\u1ed9i t\u1ee5, tia sáng \u0111i qua tiêu \u0111i\u1ec3m tr\u01b0\u1edbc khi t\u1edbi th\u1ea5u kính s\u1ebd \u0111i song song v\u1edbi tr\u1ee5c chính sau khi b\u1ecb khúc x\u1ea1.<br \/> <\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"125","test":"0","date":"2024-12-23 23:49:08","option_type":"txt","len":2},{"id":"9282","post_id":"8214","mon_id":"1159533","chapter_id":"1159595","question":"<p>Th\u1ea5u kính nào sau \u0111ây có tiêu c\u1ef1 âm?<\/p>","options":["A. Th\u1ea5u kính h\u1ed9i t\u1ee5.","B. Th\u1ea5u kính phân k\u1ef3.","C. Th\u1ea5u kính ph\u1eb3ng.","D. Th\u1ea5u kính ph\u1eb3ng-l\u1ed3i."],"correct":"2","level":"2","hint":"","answer":"<p>\u0110áp án: B. Th\u1ea5u kính phân k\u1ef3.<br \/>Gi\u1ea3i thích:<br \/>Th\u1ea5u kính phân k\u1ef3 có tiêu c\u1ef1 âm, vì nó làm phân tách các tia sáng song song ra xa nhau.<br \/> <\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"125","test":"0","date":"2024-12-23 23:50:23","option_type":"txt","len":2},{"id":"9283","post_id":"8214","mon_id":"1159533","chapter_id":"1159595","question":"<p>Khi \u0111\u1eb7t m\u1ed9t v\u1eadt t\u1ea1i tiêu \u0111i\u1ec3m c\u1ee7a th\u1ea5u kính h\u1ed9i t\u1ee5, \u1ea3nh c\u1ee7a v\u1eadt s\u1ebd:<\/p>","options":["A. N\u1eb1m t\u1ea1i tiêu \u0111i\u1ec3m phía bên kia.","B. N\u1eb1m t\u1ea1i vô c\u1ef1c.","C. N\u1eb1m gi\u1eefa th\u1ea5u kính và tiêu \u0111i\u1ec3m.","D. Không xu\u1ea5t hi\u1ec7n \u1ea3nh."],"correct":"2","level":"2","hint":"","answer":"<p>\u0110áp án: B. N\u1eb1m t\u1ea1i vô c\u1ef1c.<br \/>Gi\u1ea3i thích:<br \/>Khi v\u1eadt n\u1eb1m t\u1ea1i tiêu \u0111i\u1ec3m c\u1ee7a th\u1ea5u kính h\u1ed9i t\u1ee5, các tia sáng ló ra s\u1ebd song song và không h\u1ed9i t\u1ee5, do \u0111ó \u1ea3nh n\u1eb1m t\u1ea1i vô c\u1ef1c.<\/p><p><br \/> <\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"125","test":"0","date":"2024-12-23 23:51:51","option_type":"txt","len":3}]}