A) All the planets move in elliptical orbits with the sun at a focus
B) The radius vector from the sun to the planet sweeps equal area in equal time
C) The square of the time period of a planet is proportional to the cube of the semi major axis of the ellipse
D) None of the above
Correct Answer: A
Solution :
Kepler's First law of Planetary Motion States that all the planets move in elliptical orbits with the sun at all focus.
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