Question

    According to Kepler’s third law of planetary motion,

    the square of the orbital period of a planet is proportional to the __________.
    A Semi-major axis Correct Answer Incorrect Answer
    B Square of the semi-major axis Correct Answer Incorrect Answer
    C Cube of the semi-major axis Correct Answer Incorrect Answer
    D Fourth power of the semi-major axis Correct Answer Incorrect Answer

    Solution

    Kepler's third law states that the square of the orbital period of a planet is proportional to the cube of the semi-major axis of its orbit, establishing a relationship between the time a planet takes to orbit the Sun and its distance from the Sun.

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