The corrcet answer is option 1) i.e. A1 = 2 × A2. CONCEPT: Kepler's laws of planetary motion: Kepler's laws of planetary motion can be stated as: Kepler's first law: All the planets move around the Sun in elliptical orbits having the Sun at one of the foci. This law is also called the "Law of orbits." Kepler's second law: The radius vector drawn from the Sun to the planet sweeps out equal areas in equal intervals of time. This law is also called the "Law of Equal Areas." Kepler's third law: The square of the time period of revolution of the planet around the Sun in an elliptical orbit is directly proportional to the cube of its semi-major axis. This law is also called the "Law of Periods." Additional Information A2 = 2 × A1 when, T2 = 2 × T1. A1 = A2 when, T1 = T2.