PhysicsMedium159×since 2002Q7262Two stars of masses m and 2m at a distance d rotate about their common centre of mass in free space. The period of revolution is :A12πd33Gm{1 \over {2\pi }}\sqrt {{{{d^3}} \over {3Gm}}}2π13Gmd3B2π3Gmd32\pi \sqrt {{{3Gm} \over {{d^3}}}}2πd33GmC12π3Gmd3{1 \over {2\pi }}\sqrt {{{3Gm} \over {{d^3}}}}2π1d33GmD2πd33Gm2\pi \sqrt {{{{d^3}} \over {3Gm}}}2π3Gmd3Check answerSkip