Ecrit par ✅ Quiz : Notion D Onde Mecanique
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": "Notion D Onde Mecanique",
"quiz_slug": "01_notion_d_onde_mecanique_quiz",
"quiz_description": "Quiz Edu509 : Notion D Onde Mecanique",
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"time_value": 0,
"time_type": "minutes"
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"attempts_allowed": 0,
"passing_grade": 70,
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"questions": [
{
"question_order": 1,
"question_title": "Quelle affirmation décrit correctement une onde mécanique ?",
"question_type": "single_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 pour se propager et transporte de l'énergie sans transporter de matière.",
"answers": [
{
"answer_title": "C'est une perturbation qui se propage dans un milieu matériel en transportant de l'énergie sans transporter de matière.",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "C'est une perturbation qui se propage dans le vide sans support matériel.",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "C'est une particule qui se déplace dans un milieu matériel.",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "C'est une onde qui transporte de la matière d'un point à un autre.",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 2,
"question_title": "Laquelle des propositions suivantes est une onde transversale ?",
"question_type": "single_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "L'onde à la surface de l'eau est transversale car la perturbation est perpendiculaire à la direction de propagation.",
"answers": [
{
"answer_title": "Onde à la surface de l'eau",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "Onde sonore dans l'air",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "Onde de compression dans un ressort",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "Onde sismique P",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 3,
"question_title": "Une onde se propage sur une corde avec une longueur d’onde \\\\( \\\\lambda = 3{,}0\\\\ \\\\mathrm{m} \\\\) et une fréquence \\\\( f = 4{,}0\\\\ \\\\mathrm{Hz} \\\\). Quelle est sa célérité ?",
"question_type": "single_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "La célérité se calcule par \\\\( v = \\\\lambda \\\\times f = 3{,}0 \\\\times 4{,}0 = 12{,}0\\\\ \\\\mathrm{m/s} \\\\).",
"answers": [
{
"answer_title": "\\\\( 12{,}0\\\\ \\\\mathrm{m/s} \\\\)",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "\\\\( 7{,}0\\\\ \\\\mathrm{m/s} \\\\)",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "\\\\( 0{,}75\\\\ \\\\mathrm{m/s} \\\\)",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "\\\\( 1{,}3\\\\ \\\\mathrm{m/s} \\\\)",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 4,
"question_title": "Quelle est la période d’une onde de fréquence \\\\( 50\\\\ \\\\mathrm{Hz} \\\\) ?",
"question_type": "single_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "La période est \\\\( T = \\\\frac{1}{f} = \\\\frac{1}{50} = 0{,}020\\\\ \\\\mathrm{s} \\\\).",
"answers": [
{
"answer_title": "\\\\( 0{,}020\\\\ \\\\mathrm{s} \\\\)",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "\\\\( 0{,}50\\\\ \\\\mathrm{s} \\\\)",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "\\\\( 2{,}0\\\\ \\\\mathrm{s} \\\\)",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "\\\\( 0{,}002\\\\ \\\\mathrm{s} \\\\)",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 5,
"question_title": "Dans une onde longitudinale, 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": "Oblique à la direction de propagation",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "Nulle",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 6,
"question_title": "Une onde sonore se propage dans l’air à \\\\( v = 340\\\\ \\\\mathrm{m/s} \\\\) avec une fréquence de \\\\( 170\\\\ \\\\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 est \\\\( \\\\lambda = \\\\frac{v}{f} = \\\\frac{340}{170} = 2{,}0\\\\ \\\\mathrm{m} \\\\).",
"answers": [
{
"answer_title": "\\\\( 2{,}0\\\\ \\\\mathrm{m} \\\\)",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "\\\\( 0{,}5\\\\ \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "\\\\( 510\\\\ \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "\\\\( 170\\\\ \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 7,
"question_title": "Sur une corde de longueur \\\\( 1{,}5\\\\ \\\\mathrm{m} \\\\) tendue entre deux points fixes, on observe une onde stationnaire avec 2 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 2 ventres, \\\\( n = 2 \\\\), donc \\\\( L = n \\\\frac{\\\\lambda}{2} \\\\Rightarrow \\\\lambda = \\\\frac{2L}{n} = \\\\frac{2 \\\\times 1{,}5}{2} = 1{,}5\\\\ \\\\mathrm{m} \\\\).",
"answers": [
{
"answer_title": "\\\\( 1{,}5\\\\ \\\\mathrm{m} \\\\)",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "\\\\( 3{,}0\\\\ \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "\\\\( 0{,}75\\\\ \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "\\\\( 2{,}0\\\\ \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 8,
"question_title": "Quelle(s) grandeur(s) caractérise(nt) une onde mécanique ?",
"question_type": "multiple_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "Amplitude, longueur d’onde et fréquence sont des grandeurs caractéristiques d’une onde mécanique.",
"answers": [
{
"answer_title": "Amplitude",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "Longueur d’onde",
"is_correct": true,
"answer_order": 2
},
{
"answer_title": "Fréquence",
"is_correct": true,
"answer_order": 3
},
{
"answer_title": "Masse volumique du vide",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 9,
"question_title": "Une onde progressive est décrite par l’équation \\\\( y(x, t) = 0{,}05 \\\\sin\\\\left(2\\\\pi \\\\left(\\\\frac{t}{0{,}2} - \\\\frac{x}{0{,}8}\\\\right)\\\\right) \\\\). 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": "La longueur d’onde est le dénominateur de \\\\( \\\\frac{x}{\\\\lambda} \\\\), donc \\\\( \\\\lambda = 0{,}8\\\\ \\\\mathrm{m} \\\\).",
"answers": [
{
"answer_title": "\\\\( 0{,}8\\\\ \\\\mathrm{m} \\\\)",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "\\\\( 0{,}2\\\\ \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "\\\\( 0{,}05\\\\ \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "\\\\( 2{,}0\\\\ \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 10,
"question_title": "Quelle est la fréquence d’une onde dont la période est \\\\( 0{,}25\\\\ \\\\mathrm{s} \\\\) ?",
"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{1}{T} = \\\\frac{1}{0{,}25} = 4{,}0\\\\ \\\\mathrm{Hz} \\\\).",
"answers": [
{
"answer_title": "\\\\( 4{,}0\\\\ \\\\mathrm{Hz} \\\\)",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "\\\\( 0{,}25\\\\ \\\\mathrm{Hz} \\\\)",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "\\\\( 2{,}5\\\\ \\\\mathrm{Hz} \\\\)",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "\\\\( 0{,}04\\\\ \\\\mathrm{Hz} \\\\)",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 11,
"question_title": "Dans une onde stationnaire sur une corde fixe aux deux extrémités, les nœuds sont :",
"question_type": "single_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "Les nœuds sont des points fixes où l’amplitude est toujours nulle dans une onde stationnaire.",
"answers": [
{
"answer_title": "Des points où l’amplitude est toujours nulle",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "Des points où l’amplitude est maximale",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "Des points qui se déplacent le long de la corde",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "Des points où la fréquence est nulle",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 12,
"question_title": "Une onde se propage avec une célérité de \\\\( 15{,}0\\\\ \\\\mathrm{m/s} \\\\) et une longueur d’onde de \\\\( 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{,}0}{3{,}0} = 5{,}0\\\\ \\\\mathrm{Hz} \\\\).",
"answers": [
{
"answer_title": "\\\\( 5{,}0\\\\ \\\\mathrm{Hz} \\\\)",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "\\\\( 0{,}2\\\\ \\\\mathrm{Hz} \\\\)",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "\\\\( 45{,}0\\\\ \\\\mathrm{Hz} \\\\)",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "\\\\( 18{,}0\\\\ \\\\mathrm{Hz} \\\\)",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 13,
"question_title": "Lorsqu’une onde atteint une extrémité fixe, il se produit :",
"question_type": "single_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "À une extrémité fixe, l’onde est réfléchie avec inversion de phase.",
"answers": [
{
"answer_title": "Une réflexion avec inversion de phase",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "Une transmission sans réflexion",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "Une réflexion sans inversion de phase",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "Une absorption totale",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 14,
"question_title": "Une onde longitudinale de fréquence \\\\( 2{,}0\\\\ \\\\mathrm{Hz} \\\\) se propage dans un ressort de \\\\( 8{,}0\\\\ \\\\mathrm{m} \\\\) à la vitesse de \\\\( 16{,}0\\\\ \\\\mathrm{m/s} \\\\). Combien de longueurs d’onde sont contenues dans le ressort ?",
"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{16{,}0}{2{,}0} = 8{,}0\\\\ \\\\mathrm{m} \\\\), donc il y a \\\\( N = \\\\frac{8{,}0}{8{,}0} = 1,0 \\\\) longueur d’onde dans le ressort.",
"answers": [
{
"answer_title": "1,0",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "2,0",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "0,5",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "4,0",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 15,
"question_title": "Parmi les phénomènes suivants, lesquels sont caractéristiques des ondes mécaniques ?",
"question_type": "multiple_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "Réflexion, réfraction et diffraction sont des phénomènes caractéristiques des ondes mécaniques.",
"answers": [
{
"answer_title": "Réflexion",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "Réfraction",
"is_correct": true,
"answer_order": 2
},
{
"answer_title": "Diffraction",
"is_correct": true,
"answer_order": 3
},
{
"answer_title": "Polarisation",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 16,
"question_title": "Laquelle des affirmations suivantes est vraie concernant la propagation d’une onde mécanique ?",
"question_type": "single_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "Dans une onde mécanique, seule la perturbation se propage, la matière oscille localement autour de sa position d’équilibre.",
"answers": [
{
"answer_title": "La perturbation se propage, mais la matière ne se déplace pas globalement.",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "La matière se déplace avec la perturbation.",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "L’énergie n’est pas transmise.",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "La propagation est possible dans le vide.",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 17,
"question_title": "Une onde a une amplitude de \\\\( 0{,}10\\\\ \\\\mathrm{m} \\\\). Que représente cette amplitude ?",
"question_type": "single_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "L’amplitude est l’écart maximal d’une particule par rapport à sa position d’équilibre.",
"answers": [
{
"answer_title": "L’écart maximal d’une particule par rapport à sa position d’équilibre",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "La distance entre deux nœuds",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "La vitesse de propagation",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "La période de l’onde",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 18,
"question_title": "Une onde se propage à \\\\( 20{,}0\\\\ \\\\mathrm{m/s} \\\\) avec une période de \\\\( 0{,}50\\\\ \\\\mathrm{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 fréquence est \\\\( f = \\\\frac{1}{0{,}50} = 2{,}0\\\\ \\\\mathrm{Hz} \\\\), donc \\\\( \\\\lambda = \\\\frac{v}{f} = \\\\frac{20{,}0}{2{,}0} = 10{,}0\\\\ \\\\mathrm{m} \\\\).",
"answers": [
{
"answer_title": "\\\\( 10{,}0\\\\ \\\\mathrm{m} \\\\)",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "\\\\( 40{,}0\\\\ \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "\\\\( 0{,}025\\\\ \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "\\\\( 0{,}5\\\\ \\\\mathrm{m} \\\\)",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 19,
"question_title": "Dans une onde stationnaire, les ventres sont :",
"question_type": "single_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "Les ventres sont les points où l’amplitude est maximale dans une onde stationnaire.",
"answers": [
{
"answer_title": "Des points où l’amplitude est maximale",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "Des points où l’amplitude est nulle",
"is_correct": false,
"answer_order": 2
},
{
"answer_title": "Des points fixes",
"is_correct": false,
"answer_order": 3
},
{
"answer_title": "Des points où la fréquence est maximale",
"is_correct": false,
"answer_order": 4
}
]
},
{
"question_order": 20,
"question_title": "Quelle(s) formule(s) exprime(nt) correctement la relation fondamentale de l’onde ?",
"question_type": "multiple_choice",
"question_mark": 1,
"answer_required": true,
"randomize_question": false,
"show_question_mark": true,
"question_description": "",
"question_explanation": "Les trois premières formules expriment la relation fondamentale de l’onde, la dernière est incorrecte.",
"answers": [
{
"answer_title": "\\\\( v = \\\\lambda \\\\times f \\\\)",
"is_correct": true,
"answer_order": 1
},
{
"answer_title": "\\\\( \\\\lambda = \\\\frac{v}{f} \\\\)",
"is_correct": true,
"answer_order": 2
},
{
"answer_title": "\\\\( f = \\\\frac{v}{\\\\lambda} \\\\)",
"is_correct": true,
"answer_order": 3
},
{
"answer_title": "\\\\( v = f + \\\\lambda \\\\)",
"is_correct": false,
"answer_order": 4
}
]
}
]
}