Ecrit par ✅ Quiz : Ondes Transversales Et Longitudinales
Ce quiz contient 20 questions.
Note : Placeholder pour valider la structure. Le JSON converti est conservé ci-dessous pour l’import final des vraies questions Tutor LMS.
JSON Tutor LMS-ready
{
"quiz_title": "Ondes Transversales Et Longitudinales",
"quiz_slug": "02_ondes_transversales_et_longitudinales_quiz",
"quiz_description": "Quiz Edu509 : Ondes Transversales Et Longitudinales",
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"time_limit": {
"time_value": 0,
"time_type": "minutes"
},
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},
"questions": [
{
"question_order": 1,
"question_title": "Quelle affirmation décrit correctement une onde transversale ?",
"question_type": "single_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "Dans une onde transversale, la perturbation des particules du milieu est perpendiculaire à la direction de propagation de l’onde.",
"answers": [
{
"answer_title": "La perturbation est perpendiculaire à la direction de propagation.",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "La perturbation est parallèle à la direction de propagation.",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "La propagation nécessite toujours un vide.",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "La perturbation se fait uniquement dans le sens de la propagation.",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 2,
"question_title": "Parmi les exemples suivants, lesquels sont des ondes longitudinales ?",
"question_type": "multiple_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "Le son dans l’air et les ondes sismiques P sont des ondes longitudinales, car la perturbation est parallèle à la direction de propagation.",
"answers": [
{
"answer_title": "Le son dans l’air",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "Les vagues à la surface de l’eau",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "Les ondes sismiques P",
"is_correct": true,
"answer_order": 3
},
{
"answer_title": "Une onde sur une corde tendue",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 3,
"question_title": "Une onde se propage sur une corde à une vitesse de \\\\( 12 \\\\mathrm{m/s} \\\\) et une fréquence de \\\\( 6{,}0 \\\\mathrm{Hz} \\\\). Quelle est sa longueur d’onde ?",
"question_type": "single_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "La longueur d’onde se calcule par \\\\( \\\\lambda = \\\\frac{v}{f} = \\\\frac{12}{6{,}0} = 2{,}0 \\\\mathrm{m} \\\\).",
"answers": [
{
"answer_title": "\\\\( 2{,}0 \\\\mathrm{m} \\\\)",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "\\\\( 72 \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "\\\\( 0{,}5 \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "\\\\( 18 \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 4,
"question_title": "Quelle(s) caractéristique(s) distingue(nt) une onde mécanique d’une onde électromagnétique ?",
"question_type": "multiple_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "Une onde mécanique nécessite un milieu matériel et transporte de l’énergie sans transporter de matière.",
"answers": [
{
"answer_title": "Elle nécessite un milieu matériel pour se propager.",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "Elle peut se propager dans le vide.",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "Elle transporte de la matière.",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "Elle transporte de l’énergie sans transporter de matière.",
"is_correct": true,
"answer_order": 4
}
]
},
{
"question_order": 5,
"question_title": "Une onde sonore de fréquence \\\\( 440 \\\\mathrm{Hz} \\\\) se propage dans l’air à \\\\( 340 \\\\mathrm{m/s} \\\\). Quelle est sa longueur d’onde ?",
"question_type": "single_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "La longueur d’onde est \\\\( \\\\lambda = \\\\frac{340}{440} = 0{,}773 \\\\mathrm{m} \\\\).",
"answers": [
{
"answer_title": "\\\\( 0{,}773 \\\\mathrm{m} \\\\)",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "\\\\( 1{,}29 \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "\\\\( 0{,}15 \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "\\\\( 3{,}4 \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 6,
"question_title": "Dans une onde stationnaire sur une corde de longueur \\\\( 2{,}4 \\\\mathrm{m} \\\\) avec 4 ventres, quelle est la longueur d’onde ?",
"question_type": "single_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "Pour 4 ventres, \\\\( n = 4 \\\\). \\\\( \\\\lambda = \\\\frac{2L}{n} = \\\\frac{2 \\\\times 2{,}4}{4} = 1{,}2 \\\\mathrm{m} \\\\).",
"answers": [
{
"answer_title": "\\\\( 1{,}2 \\\\mathrm{m} \\\\)",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "\\\\( 0{,}6 \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "\\\\( 2{,}4 \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "\\\\( 0{,}8 \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 7,
"question_title": "Quelle(s) affirmation(s) est/sont vraie(s) concernant la réflexion d’une onde ?",
"question_type": "multiple_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "Lors de la réflexion, l’onde repart dans le milieu initial, la fréquence et la vitesse restent inchangées dans le même milieu, mais la direction change.",
"answers": [
{
"answer_title": "L’onde repart dans le milieu initial après avoir rencontré un obstacle.",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "La fréquence de l’onde change lors de la réflexion.",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "La vitesse de l’onde reste la même dans le même milieu.",
"is_correct": true,
"answer_order": 3
},
{
"answer_title": "La direction de propagation ne change pas.",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 8,
"question_title": "Une onde se propage sur une corde de \\\\( 5{,}0 \\\\mathrm{m} \\\\) en \\\\( 2{,}5 \\\\mathrm{s} \\\\). Quelle est sa vitesse ?",
"question_type": "single_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "La vitesse est \\\\( v = \\\\frac{d}{\\\\Delta t} = \\\\frac{5{,}0}{2{,}5} = 2{,}0 \\\\mathrm{m/s} \\\\).",
"answers": [
{
"answer_title": "\\\\( 2{,}0 \\\\mathrm{m/s} \\\\)",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "\\\\( 12{,}5 \\\\mathrm{m/s} \\\\)",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "\\\\( 0{,}5 \\\\mathrm{m/s} \\\\)",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "\\\\( 7{,}5 \\\\mathrm{m/s} \\\\)",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 9,
"question_title": "Dans une onde longitudinale, la direction de la perturbation est :",
"question_type": "single_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "Dans une onde longitudinale, la perturbation est parallèle à la direction de propagation.",
"answers": [
{
"answer_title": "Parallèle à la direction de propagation",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "Perpendiculaire à la direction de propagation",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "Toujours verticale",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "Toujours horizontale",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 10,
"question_title": "Une onde progressive a pour équation \\\\( y(x, t) = 0{,}05 \\\\sin(2\\\\pi \\\\times 50 t - 4\\\\pi x) \\\\). Quelle est sa fréquence ?",
"question_type": "single_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "La fréquence est le coefficient de \\\\( t \\\\) divisé par \\\\( 2\\\\pi \\\\), ici \\\\( 2\\\\pi \\\\times 50 \\\\) donc \\\\( f = 50 \\\\mathrm{Hz} \\\\).",
"answers": [
{
"answer_title": "\\\\( 50 \\\\mathrm{Hz} \\\\)",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "\\\\( 25 \\\\mathrm{Hz} \\\\)",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "\\\\( 100 \\\\mathrm{Hz} \\\\)",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "\\\\( 4 \\\\mathrm{Hz} \\\\)",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 11,
"question_title": "Quels phénomènes peuvent se produire lorsqu’une onde passe d’un milieu à un autre ?",
"question_type": "multiple_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "Lors du passage d’un milieu à un autre, il peut y avoir réflexion, réfraction et changement de longueur d’onde, mais la fréquence reste constante.",
"answers": [
{
"answer_title": "Réfraction",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "Réflexion",
"is_correct": true,
"answer_order": 2
},
{
"answer_title": "La fréquence change",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "La longueur d’onde change",
"is_correct": true,
"answer_order": 4
}
]
},
{
"question_order": 12,
"question_title": "Une onde transversale a une longueur d’onde de \\\\( 3{,}0 \\\\mathrm{m} \\\\) et une fréquence de \\\\( 2{,}0 \\\\mathrm{Hz} \\\\). Quelle est sa vitesse ?",
"question_type": "single_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "La vitesse est \\\\( v = \\\\lambda \\\\cdot f = 3{,}0 \\\\times 2{,}0 = 6{,}0 \\\\mathrm{m/s} \\\\).",
"answers": [
{
"answer_title": "\\\\( 6{,}0 \\\\mathrm{m/s} \\\\)",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "\\\\( 1{,}5 \\\\mathrm{m/s} \\\\)",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "\\\\( 0{,}67 \\\\mathrm{m/s} \\\\)",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "\\\\( 5{,}0 \\\\mathrm{m/s} \\\\)",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 13,
"question_title": "Quelle(s) affirmation(s) est/sont vraie(s) pour une onde stationnaire ?",
"question_type": "multiple_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "Une onde stationnaire résulte de la superposition de deux ondes progressives opposées, présente des nœuds et ne transporte pas d’énergie globale.",
"answers": [
{
"answer_title": "Elle résulte de la superposition de deux ondes progressives de même fréquence et de sens opposés.",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "Elle ne transporte pas d’énergie globale.",
"is_correct": true,
"answer_order": 2
},
{
"answer_title": "Elle ne présente jamais de nœuds.",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "Elle se propage dans un seul sens.",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 14,
"question_title": "Une onde se propage à \\\\( 15 \\\\mathrm{m/s} \\\\) et sa longueur d’onde est \\\\( 3{,}0 \\\\mathrm{m} \\\\). Quelle est sa fréquence ?",
"question_type": "single_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "La fréquence est \\\\( f = \\\\frac{v}{\\\\lambda} = \\\\frac{15}{3{,}0} = 5{,}0 \\\\mathrm{Hz} \\\\).",
"answers": [
{
"answer_title": "\\\\( 5{,}0 \\\\mathrm{Hz} \\\\)",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "\\\\( 45 \\\\mathrm{Hz} \\\\)",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "\\\\( 0{,}2 \\\\mathrm{Hz} \\\\)",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "\\\\( 18 \\\\mathrm{Hz} \\\\)",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 15,
"question_title": "Quels sont les éléments nécessaires pour former une onde stationnaire sur une corde ?",
"question_type": "multiple_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "Une onde stationnaire nécessite deux ondes de même fréquence et de sens opposés.",
"answers": [
{
"answer_title": "Deux ondes de même fréquence",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "Deux ondes de sens opposés",
"is_correct": true,
"answer_order": 2
},
{
"answer_title": "Deux ondes de fréquences différentes",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "Une seule onde progressive",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 16,
"question_title": "Une onde longitudinale parcourt \\\\( 4{,}8 \\\\mathrm{m} \\\\) en \\\\( 2{,}4 \\\\mathrm{s} \\\\). Quelle est sa vitesse ?",
"question_type": "single_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "La vitesse est \\\\( v = \\\\frac{4{,}8}{2{,}4} = 2{,}0 \\\\mathrm{m/s} \\\\).",
"answers": [
{
"answer_title": "\\\\( 2{,}0 \\\\mathrm{m/s} \\\\)",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "\\\\( 0{,}5 \\\\mathrm{m/s} \\\\)",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "\\\\( 7{,}2 \\\\mathrm{m/s} \\\\)",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "\\\\( 1{,}2 \\\\mathrm{m/s} \\\\)",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 17,
"question_title": "Quelle(s) grandeur(s) reste(nt) constante(s) lors de la réfraction d’une onde ?",
"question_type": "single_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "Lors de la réfraction, la fréquence reste constante, mais la vitesse, la longueur d’onde et la direction changent.",
"answers": [
{
"answer_title": "La fréquence",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "La vitesse",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "La longueur d’onde",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "La direction de propagation",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 18,
"question_title": "Une onde sur une corde a une équation \\\\( y(x, t) = 0{,}1 \\\\sin(2\\\\pi \\\\times 10 t + 4\\\\pi x) \\\\). Quelle est la longueur d’onde ?",
"question_type": "single_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "Le nombre d’onde \\\\( k = 4\\\\pi \\\\), donc \\\\( k = \\\\frac{2\\\\pi}{\\\\lambda} \\\\Rightarrow \\\\lambda = \\\\frac{2\\\\pi}{4\\\\pi} = 0{,}5 \\\\mathrm{m} \\\\).",
"answers": [
{
"answer_title": "\\\\( 0{,}5 \\\\mathrm{m} \\\\)",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "\\\\( 2{,}0 \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "\\\\( 1{,}0 \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "\\\\( 4{,}0 \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 19,
"question_title": "Quels sont des exemples d’ondes transversales ?",
"question_type": "multiple_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "Les vagues à la surface de l’eau et les ondes sur une corde sont des ondes transversales.",
"answers": [
{
"answer_title": "Vague à la surface de l’eau",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "Onde sur une corde tendue",
"is_correct": true,
"answer_order": 2
},
{
"answer_title": "Son dans l’air",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "Onde sismique P",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 20,
"question_title": "Une onde de fréquence \\\\( 25 \\\\mathrm{Hz} \\\\) a une longueur d’onde de \\\\( 0{,}40 \\\\mathrm{m} \\\\). Quelle est sa vitesse ?",
"question_type": "single_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "La vitesse est \\\\( v = \\\\lambda \\\\cdot f = 0{,}40 \\\\times 25 = 10 \\\\mathrm{m/s} \\\\).",
"answers": [
{
"answer_title": "\\\\( 10 \\\\mathrm{m/s} \\\\)",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "\\\\( 62{,}5 \\\\mathrm{m/s} \\\\)",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "\\\\( 0{,}016 \\\\mathrm{m/s} \\\\)",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "\\\\( 100 \\\\mathrm{m/s} \\\\)",
"is_correct": false,
"answer_order": 4
}
]
}
]
}