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प्रश्न
According to one of the Kepler's laws of planetary motion :
विकल्प
r2 ∝ T3
r ∝ T2
r3 ∝ T2
`r^3 ∝ 1/T^2`
उत्तर
r3 ∝ T2
According to Kepler’s third law of planetary motion, the cube of mean distance of a planet from the sun is directly proportional to the square of time it takes to move around the sun.
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