For a planet revolving around sun, if `a` and `b` are the respective semi-major and semi-minor axes, then the square of its time period is proportional to

A planet revolves in an elliptical orbit around the sun. The semi-major and minor axes are a and b , then the time period is given by :

If a planet is revolving around sun in circular orbit with force F propto r^(-5/2) , where r is radius, then square of the period is proportional to

For a planet moving around the Sun in an elliptical orbit of semimajor and semiminor axes a and b respectively and Time period T. For this situation which one of the following statements is correct?

A planet revolves in an elliptical orbit around the Sun. The semi-major and semi-minor axis are A and B. How time-period is related with them?