Railways General Science & Technology Wave Optics / तरंग प्रकाशिकी Sample Paper Wave Optics Sample Test Paper-7

  • question_answer
    Which of the following are not electromagnetic waves

    A)  Cosmic rays     

    B)  Gamma rays

    C)  \[\beta \,-\,rays\]

    D)  X - rays

    Correct Answer: C

    Solution :

    [c] \[\beta -rays\] are beams of fast electrons.


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