A double star is a system of two stars rotating about their centre of mass only under their mutual gravitational attraction. Let the stars have masses m and 2m and let their separation by 1. Theire time period of rotation about their centre of mass will be proportional to

A double star is a system of two stars rotating about their centre of

1.	A double star is a system of two stars rotating about their centre of mass only under their mutual gravitational attraction. Let the stars have masses m and 2m and let their separation by 1. Theire time period of rotation about their centre of mass will be proportional to
Answer» only a & C are TRUE only B & c are true only a & d are true all are true ANSWER :C