Q 2317680580.     A system of binary stars of masses `m_A` and `m_B` are moving in circular orbits of radii `r_A` and `r_B` respectively. If `T_A` and `T_B` are the time periods of masses `m_A` and `m_B`, respectively, then

JEE 2006
A

`T_A/T_B = (r_A/r_B)^(3/2)`

B

`T_A > T_B ` if `r _A > r_B`

C

`T_A > T_B` if ` m_A > m_B`

D

`T_A =T_B`

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