Q. Consider the following statements with reference to the Universe:
1.A binary system is one in which one star in a binary evolves more faster than its partner.
2.A pulsar is a special kind of neutron star which is the ultra-dense leftover core of a massive star.
3.Neutron stars are the smallest densest stars known to exist.
Which of the statements given above are correct?
Answer: B
Notes:
Explanation –
Statement 1 is incorrect. A binary system is one in which two stars orbit around a common centre of mass, that is they are gravitationally bound to each other.
Statement 2 and 3 are correct. A pulsar is a special kind of neutron star which is the ultra-dense leftover core of a massive star. Neutron stars are the smallest densest stars known to exist.
Source: ForumIAS
