Gravitation 4 Question 2
3. 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.
(2006, 3M)
(a) If $T _A>T _B$ then $R _A>R _B$
(b) If $T _A>T _B$ then $M _A>M _B$
(c) $\frac{T _A}{T _B}=\frac{R _A}{R _B}$
(d) $T _A=T _B$
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Answer:
Correct Answer: 3. (d)
Solution:
- In case of binary star system, angular velocity and hence, the time period of both the stars are equal.
