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A double star consists of two stars havi...

A double star consists of two stars having masses M and 2M. The distance between their centres is equal to 5, They revolve under their mutual gravitational interaction. Then, which of the following statements are not correct ?

A

Heavier star revolves in orbit of radius (2r)/3

B

Both the stars revolve with same speed, period of which is equal to `(2p/r^3)(2GM^2/3)`

C

Kinetic energy of the heavier star is twice that of the other star

D

None of the above

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The correct Answer is:
A, C
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