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NEET Physics · Hard

Gravitation: Kepler's Laws MCQ

Solve this quality-checked NEET multiple-choice question, then review the correct answer and explanation.

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Kepler's LawsHardQuestion 6256

Question

If Earth-Sun distance doubles, Earth's orbital period becomes:
  1. A
    2 years
  2. B
    4 years
  3. C
    2√2 years
    Correct
  4. D
    8 years

Correct answer

2√2 years

Explanation

T² ∝ r³. T₂ = T₁×(r₂/r₁)^(3/2) = 1×2^(3/2) = 2√2 years = 2√2 years.

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