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Introduction to Gravitation : Kepler's Laws

Which of the ...

Question

Which of the following statements are correct about a planet revolving around the sun in an elliptical orbit?

A

Its kinetic energy is constant

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B

Its angular momentum is constant

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C

Its areal velocity is constant

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D

Its time period is proportional to

r^{3}

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Solution

The correct options are
B Its angular momentum is constant
C Its areal velocity is constant
According to Kepler's planetary laws, for a planet revolving around the Sun in an eliptical orbit has its angular momentum and areal velocity as constant.

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