Kepler's Third Law relates the orbital period and orbital radius of planets orbiting the same central body: T² ∝ R³.
Two planets orbit the Sun in circular orbits, with their radius of orbit as R₁ = R and R₂ = 4R. Ratio of their periods (T₁/T₂) around the Sun will be
Asked in UPSC NDA 2 2020 · Topic: Space (Orbital Mechanics and Kepler's Laws)
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