Quiz — فيزياء 1

Question 1 sur 10 20:00

[{"id":85775,"question":"Quelle est la formule de la vitesse dans un mouvement uniforme ?","option_a":"v = d\/t","option_b":"v = t\/d","option_c":"v = d×t","option_d":"v = a×t","option_e":"","option_f":"","bonne_reponse":"a","explication":"La vitesse est définie comme le rapport de la distance parcourue (d) par le temps écoulé (t).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"v = d\/t\", \"b\": \"v = t\/d\", \"c\": \"v = d×t\", \"d\": \"v = a×t\"}}","_debug_options_count":4},{"id":85776,"question":"La loi d'Ohm s'exprime par la formule U = R\/I.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"La loi d'Ohm est U = R×I, où U est la tension, R la résistance et I l'intensité.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":85777,"question":"Quel phénomène explique la formation d'une image dans un miroir plan ?","option_a":"La réflexion","option_b":"La réfraction","option_c":"La diffraction","option_d":"L'absorption","option_e":"","option_f":"","bonne_reponse":"a","explication":"La réflexion de la lumière sur une surface plane permet de former une image virtuelle.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"La réflexion\", \"b\": \"La réfraction\", \"c\": \"La diffraction\", \"d\"","_debug_options_count":4},{"id":85778,"question":"Quelle est l'unité de la force dans le système international ?","option_a":"Le newton (N)","option_b":"Le joule (J)","option_c":"Le watt (W)","option_d":"Le pascal (Pa)","option_e":"","option_f":"","bonne_reponse":"a","explication":"Le newton (N) est l'unité de force dans le système international.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Le newton (N)\", \"b\": \"Le joule (J)\", \"c\": \"Le watt (W)\", \"d\": \"Le","_debug_options_count":4},{"id":85779,"question":"Un objet en chute libre accélère à cause de la gravité.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La gravité terrestre exerce une force constante sur l'objet, provoquant une accélération.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":85780,"question":"Quelle est la relation entre la puissance (P), la tension (U) et l'intensité (I) dans un circuit électrique ?","option_a":"P = U×I","option_b":"P = U\/I","option_c":"P = I\/U","option_d":"P = U²\/I","option_e":"","option_f":"","bonne_reponse":"a","explication":"La puissance électrique est le produit de la tension par l'intensité du courant.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"P = U×I\", \"b\": \"P = U\/I\", \"c\": \"P = I\/U\", \"d\": \"P = U²\/I\"}}","_debug_options_count":4},{"id":85781,"question":"Un prisme décompose la lumière blanche en plusieurs couleurs à cause de :","option_a":"La diffraction","option_b":"La dispersion","option_c":"La réflexion","option_d":"La polarisation","option_e":"","option_f":"","bonne_reponse":"b","explication":"La dispersion de la lumière dans un prisme sépare les différentes longueurs d'onde.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"La diffraction\", \"b\": \"La dispersion\", \"c\": \"La réflexion\", \"d\":","_debug_options_count":4},{"id":85782,"question":"La deuxième loi de Newton s'écrit F = m×a.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La deuxième loi de Newton relie la force (F) à l'accélération (a) et à la masse (m).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":85783,"question":"Quel est l'ordre de grandeur de la vitesse de la lumière dans le vide ?","option_a":"3×10⁸ m\/s","option_b":"3×10⁵ m\/s","option_c":"3×10¹⁰ m\/s","option_d":"3×10⁶ m\/s","option_e":"","option_f":"","bonne_reponse":"a","explication":"La vitesse de la lumière dans le vide est d'environ 3×10⁸ mètres par seconde.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"3×10⁸ m\/s\", \"b\": \"3×10⁵ m\/s\", \"c\": \"3×10¹⁰ m\/s\", \"d\": \"","_debug_options_count":4},{"id":85784,"question":"Un circuit en série a une résistance équivalente égale à la somme des résistances.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Dans un circuit en série, les résistances s'additionnent pour donner la résistance équivalente.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4}]