Q. Kepler's law of planetary motion states that the square of the time period is proportional to the
✅ Correct Answer: (C)
Cube of the semi-major axis
Explanation: The square of the time period of the planet is directly proportional to the cube of the semimajor axis of its orbit.
Explanation by: Team MCQ Buddy
The square of the time period of the planet is directly proportional to the cube of the semimajor axis of its orbit.