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CBSE Class 9 Answered

PLEASE TELL?
Asked by anandgoyal | 24 Sep, 2008, 04:14: PM
answered-by-expert Expert Answer

(a) All planets move around Sun in elliptical orbits with the Sun at one of the focal points.

(b) The radius vector drawn from the planet to  the Sun sweeps out equal areas in equaltime intervals.

(c) The square of the orbital period of a planet is directly proportional to the cube of the semi major axis 

      of the elliptical orbit of the planet

Answered by | 25 Sep, 2008, 12:44: AM

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