SSC General Science & Technology Sample Paper NCERT Sample Paper-3

  • question_answer
    The layer of the atmosphere which reflects the radio waves back to the earth is called:

    A)  Troposphere     

    B)  tratosphere

    C)  tropopause       

    D)  ionosphere

    Correct Answer: D

    Solution :

    [d] The electrified ions that fill the whole of the ionospheric layer that completely surrounds the Earth reflect radio waves from all directions to every part of the world. According to their frequencies and ionization, radio waves are completely absorbed in the ionosphere and they are both partly refracted and distributed to the outer space or are reflected and returned to the world.

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