J & K CET Engineering J and K - CET Engineering Solved Paper-2015

  • question_answer
    Which of the following is NOT an electromagnetic wave?

    A)  Sound wave       

    B)  Thermal radiation

    C)  Microwave        

    D)  Gamma ray

    Correct Answer: A

    Solution :

    Sound wave is not an electromagnetic wave. It is a mechanical wave. When sound wave propagates, particles of the medium oscillates along the direction of propagation of the wave.


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