UPSC Geography The origin and evolution of the earth Question Bank Universe / Sun / Planets / Earth

  • question_answer The brightness of a star depends on its [NDA/NA 2016-I]

    A)  size and temperature only

    B)  size and distance from the earth

    C)  size, temperature and mass

    D)  size, temperature and distance from the earth

    Correct Answer: D

    Solution :

     The brightness of a star depends on its composition i.e. size and temperature (energy/ light radiation e.g. X-ray, etc.) and how far it is from the planet.

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