This is an interesting question !
Solution is in this given attachment wait .Option "a" is correct option
Hope it's helpful .
...Report ..it ..later
a light planet revolving around a very massive star in a circular orbit of radius r with a period of revolution t. if the gravitational force of attraction between the planet and star is proportional to r−52 then t2 is proportional to
3rd option is correct
follow me ✌️
AIEEE :- 2005