{"common":{"save":0,"post_id":"8134","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"9084","post_id":"8134","mon_id":"1159533","chapter_id":"1159595","question":"<p>M\u1ed9t tia sáng \u0111i t\u1eeb n\u01b0\u1edbc (<span class=\"math-tex\">$n_1 = 1,33$<\/span>) ra không khí (<span class=\"math-tex\">$n_2 = 1,00$<\/span>) v\u1edbi góc t\u1edbi 50°. Góc gi\u1edbi h\u1ea1n c\u1ee7a n\u01b0\u1edbc là 48,8<span class=\"math-tex\">$^o$<\/span>. Hi\u1ec7n t\u01b0\u1ee3ng nào x\u1ea3y ra?<\/p>","options":["A. Tia sáng b\u1ecb khúc x\u1ea1.","B. Tia sáng b\u1ecb ph\u1ea3n x\u1ea1 m\u1ed9t ph\u1ea7n và khúc x\u1ea1 m\u1ed9t ph\u1ea7n.<br \/>\n ","C. Hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 toàn ph\u1ea7n.<br \/>\n ","D. Không có hi\u1ec7n t\u01b0\u1ee3ng gì."],"correct":"3","level":"2","hint":"","answer":"<p>\u0110áp án: C<\/p><p>Gi\u1ea3i thích:<\/p><p>- Góc t\u1edbi h\u1ea1n <span class=\"math-tex\">$i_{th}\\ l\u00e0\\ 48,8^o$<\/span>.<\/p><p>- Vì 50° > 48,8°, hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 toàn ph\u1ea7n x\u1ea3y ra. <\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"125","test":"0","date":"2024-12-07 17:25:36","option_type":"txt","len":3},{"id":"9085","post_id":"8134","mon_id":"1159533","chapter_id":"1159595","question":"<p>M\u1ed9t tia sáng truy\u1ec1n t\u1eeb th\u1ee7y tinh (<span class=\"math-tex\">$n_1 = 1,5$<\/span>) sang không khí (<span class=\"math-tex\">$n_2 = 1,0$<\/span>). Bi\u1ebft góc t\u1edbi h\u1ea1n c\u1ee7a th\u1ee7y tinh là <span class=\"math-tex\">$41,8^o$<\/span>. N\u1ebfu góc t\u1edbi là <span class=\"math-tex\">$40^\\circ$<\/span>, hi\u1ec7n t\u01b0\u1ee3ng nào x\u1ea3y ra?<\/p>","options":["A. Ch\u1ec9 x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng khúc x\u1ea1.","B. Ch\u1ec9 x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 toàn ph\u1ea7n.<br \/>\n ","C. M\u1ed9t ph\u1ea7n ánh sáng b\u1ecb khúc x\u1ea1, m\u1ed9t ph\u1ea7n b\u1ecb ph\u1ea3n x\u1ea1.","D. Không có hi\u1ec7n t\u01b0\u1ee3ng gì."],"correct":"3","level":"2","hint":"","answer":"<p>\u0110áp án: C<\/p><p>Gi\u1ea3i thích:<\/p><p>Góc t\u1edbi 40° < 41,8°, do \u0111ó tia sáng b\u1ecb khúc x\u1ea1 và ph\u1ea3n x\u1ea1 m\u1ed9t ph\u1ea7n.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"125","test":"0","date":"2024-12-07 17:29:00","option_type":"txt","len":3},{"id":"9086","post_id":"8134","mon_id":"1159533","chapter_id":"1159595","question":"<p>M\u1ed9t tia sáng truy\u1ec1n t\u1eeb n\u01b0\u1edbc (<span class=\"math-tex\">$n_1 = 1,33$<\/span>) vào th\u1ee7y tinh (<span class=\"math-tex\">$n_2 = 1,5$<\/span>) v\u1edbi góc t\u1edbi 60°. Góc khúc x\u1ea1 s\u1ebd:<\/p>","options":["A. L\u1edbn h\u01a1n góc t\u1edbi.","B. Nh\u1ecf h\u01a1n góc t\u1edbi.","C. B\u1eb1ng góc t\u1edbi.<br \/>\n ","D. Không xác \u0111\u1ecbnh. "],"correct":"2","level":"2","hint":"","answer":"<p>\u0110áp án: B<\/p><p>Gi\u1ea3i thích:<\/p><p>Vì <span class=\"math-tex\">$n_2 > n_1$<\/span>, góc khúc x\u1ea1 nh\u1ecf h\u01a1n góc t\u1edbi khi ánh sáng truyên t\u1eeb môi tr\u01b0\u1eddng có chi\u1ebft su\u1ea5t th\u1ea5p sang môi tr\u01b0\u1eddng có chi\u1ebft su\u1ea5t cao.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"125","test":"0","date":"2024-12-07 17:32:19","option_type":"txt","len":2}]}
