Kepler Laws


 
 
Concept Explanation
 

Kepler Laws

Kepler’s Laws of Planetary Motion:

Johannes Kepler proposed three laws of planetary motion in 16th century. The three laws are given as below:

1. Kepler’s First Law:

It states that the path of any planet in an orbit around the sun follows the shape of an ellipse with the sun at one of its foci. The point in the orbit of a planet nearest to the sun is called perihelion and the point farthest from the sun is called aphelion.

                                                                     

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Question : 1

The point in the orbit of a planet nearest to the sun is called ________________________.

Right Option : A
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Question : 2

Which of the following are correct :

(a) The point in the orbit of a planet nearest to the sun is called perihelion.

(b) The  farthest point in the orbit of a planet from the sun is called perihelion.

(c) Kepler’s Second Law states that an imaginary line from the sun to the planet sweeps out equal areas in equal intervals of time.

Right Option : C
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Question : 3

The relationship betwen distance of the planet from the sun and the orbital time period is given by ________________

Right Option : B
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