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As per your syllabus, Table 7.1, Kepler's 3rd law is verified by planetary data showing T² / a³ is which?

ALinearly varying with mass of planet
BIndependent of period T altogether
CApproximately the same constant for all planets
DProportional to semi-major axis a only
Answer & Solution
Correct answer: C. Approximately the same constant for all planets
syllabus Table 7.1: T²/a³ is approximately the same constant (≈ 2.97 × 10⁻¹⁹ s²/m³) for all planets in the solar system.
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