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Question 30711
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Gravitation: Kepler's Third Law MCQ

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Kepler's Third LawMediumQuestion 30711

Question

Kepler's third law states T² ∝ r³. If Mars has orbital radius 1.52 AU, its period in Earth years is approximately:
  1. A
    1.52 years
  2. B
    1.87 years
    Correct
  3. C
    2.31 years
  4. D
    3 years

Correct answer

1.87 years

Explanation

T² = r³ (in AU and years). T² = 1.52³ = 3.512. T = √3.512 ≈ 1.87 years.

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