2. Questions Bank
  3. UPSC
  4. Geography
  5. The origin and evolution of the earth

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

  • question_answer
    Nearly 30% of the solar radiations return back to the space without contributing anything to the Earth?s surface temperature. This amount of radiation is known as      [NDA 2013-I]

    A)  Black body                  

    B)  tropopause                   

    C)  Earth's albedo               

    D)  mesopause

    Correct Answer: C

    Solution :

     Albedo is the fraction of solar energy (shortwave radiation) reflected from the Earth back into space.


You need to login to perform this action.
You will be redirected in 3 sec spinner