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

  • question_answer Consider the following statements:                    
    1. The albedo of an object determines its visual brightness when viewed with reflected light.
    2. The albedo of Mercury is much greater than the albedo of the Earth.
    Which of the statement(s) given above is/are correct?   

    A)  1 only

    B)  2 only

    C)  Both 1 and 2

    D)  Neither 1 nor 2

    Correct Answer: A

    Solution :

     The albedo of an object determines its visual brightness when viewed with reflected light. Albedo is the fraction of solar energy (shortwave radiation) reflected from the Earth back into space. It is a measure of the reflectivity of the earth's surface.

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