Question

A double star system consists of two stars A and B which have time periods $T_ A $ and $T_B $ . Radius $ R_A $ and $ R_B $ and mass $ M_A $ and $M_B $ . Choose the correct option

• A. if $T_A > T_B$ then $R_A >R_B $
• B. if $T_A > T_B$ then $M_A >M_B $
• C. $\bigg( \frac{T_A}{T_B} \bigg)^2 = \bigg( \frac{R_A}{R_B} \bigg)^3 $
• D. $T_A =T_B $

Answer 1

Answer: (D)

In case of binary star system angular velocity and hence the time period of both the stars are equal.