[
    {
        "id": "validation_Physics_1",
        "question_type": "multiple-choice",
        "answer": "A",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "To the left",
            "B": "To the right",
            "C": "Towards the top of the page",
            "D": "There is no force."
        },
        "response": "A"
    },
    {
        "id": "validation_Physics_2",
        "question_type": "multiple-choice",
        "answer": "A",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "To the right/To the right",
            "B": "To the right/To the left",
            "C": "To the left/To the right",
            "D": "No direction; the force is zero./To the left"
        },
        "response": "A"
    },
    {
        "id": "validation_Physics_3",
        "question_type": "multiple-choice",
        "answer": "B",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "to the right",
            "B": "to the left",
            "C": "upward in the plane of the page",
            "D": "downward in the plane of the page"
        },
        "response": "D"
    },
    {
        "id": "validation_Physics_4",
        "question_type": "multiple-choice",
        "answer": "D",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "0.44",
            "B": "0.88",
            "C": "1.13",
            "D": "2.26"
        },
        "response": "A"
    },
    {
        "id": "validation_Physics_5",
        "question_type": "multiple-choice",
        "answer": "B",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "3.0 cm/s",
            "B": "7.0 cm/s",
            "C": "3.5 cm/s",
            "D": "12.5 cm/s"
        },
        "response": "D"
    },
    {
        "id": "validation_Physics_6",
        "question_type": "multiple-choice",
        "answer": "C",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "4 times greater than the force of the tractor on the trailer.",
            "B": "2 times greater than the force of the tractor on the trailer.",
            "C": "equal to the force of the tractor on the trailer.",
            "D": "1/4 the force of the tractor on the trailer."
        },
        "response": "A"
    },
    {
        "id": "validation_Physics_7",
        "question_type": "multiple-choice",
        "answer": "E",
        "all_choices": [
            "A",
            "B",
            "C",
            "D",
            "E"
        ],
        "index2ans": {
            "A": "the eccentricity of the orbit is less thatn zero",
            "B": "the eccentricity of the orbit is greater than 1",
            "C": "the sun might be at point C",
            "D": "the sun might be at point D",
            "E": "the sun might be at point B"
        },
        "response": "B"
    },
    {
        "id": "validation_Physics_8",
        "question_type": "multiple-choice",
        "answer": "A",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "L sin $\\theta $",
            "B": "L cos $\\theta $",
            "C": "L",
            "D": "L tan $\\theta $"
        },
        "response": "A"
    },
    {
        "id": "validation_Physics_9",
        "question_type": "multiple-choice",
        "answer": "B",
        "all_choices": [
            "A",
            "B",
            "C",
            "D",
            "E"
        ],
        "index2ans": {
            "A": "1",
            "B": "2",
            "C": "3",
            "D": "4",
            "E": "1, 2, or 3"
        },
        "response": "E"
    },
    {
        "id": "validation_Physics_10",
        "question_type": "multiple-choice",
        "answer": "A",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "The maximum kinetic energy is attained as the sphere passes through its equilibrium position.",
            "B": "The minimum gravitational potential energy is attained as the sphere passes through its equilibrium position.",
            "C": "The maximum gravitational potential energy is attained when the sphere reaches its point of release.",
            "D": "The maximum total energy is attained only as the sphere passes through its equilibrium position."
        },
        "response": "D"
    },
    {
        "id": "validation_Physics_11",
        "question_type": "multiple-choice",
        "answer": "B",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "50 nm",
            "B": "100 nm",
            "C": "150 nm",
            "D": "200 nm"
        },
        "response": "C"
    },
    {
        "id": "validation_Physics_12",
        "question_type": "multiple-choice",
        "answer": "D",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "positive in both I and III",
            "B": "negative in both I and III",
            "C": "positive in I, negative in III",
            "D": "negative in I, positive in III"
        },
        "response": "D"
    },
    {
        "id": "validation_Physics_13",
        "question_type": "multiple-choice",
        "answer": "B",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "1 s",
            "B": "Between 1 and 2 s",
            "C": "2 s",
            "D": "Between 2 and 3 s"
        },
        "response": "D"
    },
    {
        "id": "validation_Physics_14",
        "question_type": "multiple-choice",
        "answer": "A",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "v_3 > v_1 > v_2",
            "B": "v_1 > v_2 > v_3",
            "C": "v_1 > v_3 < v_2",
            "D": "v_2 > v_3 > v_1"
        },
        "response": "A"
    },
    {
        "id": "validation_Physics_15",
        "question_type": "multiple-choice",
        "answer": "D",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "2$\\lambda $",
            "B": "$\\lambda $",
            "C": "$\\lambda $/2",
            "D": "$\\lambda $/4"
        },
        "response": "A"
    },
    {
        "id": "validation_Physics_16",
        "question_type": "multiple-choice",
        "answer": "B",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "rightward",
            "B": "leftward",
            "C": "upward",
            "D": "The average velocity is zero."
        },
        "response": "D"
    },
    {
        "id": "validation_Physics_17",
        "question_type": "multiple-choice",
        "answer": "A",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "A",
            "B": "B",
            "C": "C",
            "D": "D"
        },
        "response": "A"
    },
    {
        "id": "validation_Physics_18",
        "question_type": "multiple-choice",
        "answer": "A",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "Bulb #1 only",
            "B": "Bulb #2 only",
            "C": "Bulbs #2 and #3 only",
            "D": "Bulbs #1, #2, and #3"
        },
        "response": "D"
    },
    {
        "id": "validation_Physics_19",
        "question_type": "multiple-choice",
        "answer": "A",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "A",
            "B": "B",
            "C": "C",
            "D": "D"
        },
        "response": "C"
    },
    {
        "id": "validation_Physics_20",
        "question_type": "multiple-choice",
        "answer": "A",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "1.5 eV",
            "B": "2.0 eV",
            "C": "2.7 eV",
            "D": "3.5 eV"
        },
        "response": "A"
    },
    {
        "id": "validation_Physics_21",
        "question_type": "short-answer",
        "answer": "A",
        "response": "D"
    },
    {
        "id": "validation_Physics_22",
        "question_type": "multiple-choice",
        "answer": "D",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "lower frequency",
            "B": "longer wavelength",
            "C": "greater speed",
            "D": "greater momentum"
        },
        "response": "B"
    },
    {
        "id": "validation_Physics_23",
        "question_type": "multiple-choice",
        "answer": "B",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "Zero",
            "B": "5 A, counterclockwise",
            "C": "5 A, clockwise",
            "D": "20 A, counterclockwise"
        },
        "response": "B"
    },
    {
        "id": "validation_Physics_24",
        "question_type": "multiple-choice",
        "answer": "C",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "an alpha particle",
            "B": "an electron",
            "C": "a neutron",
            "D": "a proton"
        },
        "response": "A"
    },
    {
        "id": "validation_Physics_25",
        "question_type": "multiple-choice",
        "answer": "D",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "Virtual/Larger",
            "B": "Virtual/Same size",
            "C": "Real/Smaller",
            "D": "Real/Larger"
        },
        "response": "D"
    },
    {
        "id": "validation_Physics_26",
        "question_type": "multiple-choice",
        "answer": "D",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "A",
            "B": "B",
            "C": "C",
            "D": "D"
        },
        "response": "C"
    },
    {
        "id": "validation_Physics_27",
        "question_type": "multiple-choice",
        "answer": "A",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "Q and U",
            "B": "P and T",
            "C": "Q and W",
            "D": "S and U"
        },
        "response": "D"
    },
    {
        "id": "validation_Physics_28",
        "question_type": "multiple-choice",
        "answer": "D",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "2W cos $\\theta $",
            "B": "T sin $\\theta $",
            "C": "T cos $\\theta $",
            "D": "2T sin $\\theta $"
        },
        "response": "A"
    },
    {
        "id": "validation_Physics_29",
        "question_type": "multiple-choice",
        "answer": "D",
        "all_choices": [
            "A",
            "B",
            "C",
            "D"
        ],
        "index2ans": {
            "A": "1.5 $\\Omega $",
            "B": "4 $\\Omega $",
            "C": "5 $\\Omega $",
            "D": "6 $\\Omega $"
        },
        "response": "B"
    },
    {
        "id": "validation_Physics_30",
        "question_type": "multiple-choice",
        "answer": "E",
        "all_choices": [
            "A",
            "B",
            "C",
            "D",
            "E"
        ],
        "index2ans": {
            "A": "0.25 m",
            "B": "0.5 m",
            "C": "1 m",
            "D": "2 m",
            "E": "4 m"
        },
        "response": "B"
    }
]