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Q.

Which of the following Scientist proved that the path of each planet around the Sun is elliptical?
Explanation:

ANS. (A) 
According to Kepler’s First law (Law of Orbits), each planet revolves around the sun in an elliptic orbit, the sun occupying one of the Foci. The elliptical shape of the orbit is a result of the inverse square force of gravity. Kepler’s laws were derived for orbits around the sun, but they apply to satellite orbits as well.

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