Question:medium

Binary stars \(m_A, m_B\) move in circular orbits. Compare their time periods.

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Binary system $\Rightarrow$ same angular velocity $\Rightarrow$ same time period.

Updated On: Apr 23, 2026

\(\frac{T_A}{T_B} = \left(\frac{r_A}{r_B}\right)^{3/2}\)
\(T_A>T_B\) if \(r_A>r_B\)
\(T_A>T_B\) if \(m_A>m_B\)
\(T_A = T_B\)

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The Correct Option is D

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