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Q. Stars which appear single to the naked eye but are double stars when observed by a telescope, are known as ________

  • (A) Cosmic stars
  • (B) Quasars
  • (C) Binaries
  • (D) Novae and supernovae
  • Correct Answer - Option(C)
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Explanation by: Admin
Binary stars (or double stars) are star systems where two stars orbit around a common center of mass. They appear as a single point of light to the naked eye but can be resolved into two separate stars with a telescope.

(A) Cosmic stars → Not a specific astronomical term.

(B) Quasars → Extremely bright and distant objects powered by supermassive black holes.

(D) Novae and Supernovae → These are explosive events in a star's life cycle, not double stars.

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