Short Question Answers

Q1. State Kepler's laws of planetary motion

Ans. Law of orbits: All the planets moves in elliptical orbits with the sun situated at one of the foci.

Law of areas: The line that joins any planet to the sun sweeps equal area in equal intervals of time.

Law of periods: The square of the time period of revolution of a planet is proportional to the cube of the semi-major axis of the ellipse traced out by the planet. $$T^{2}\propto a^{3}$$

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