JEE Main & Advanced Physics EM Waves Question Bank Self Evaluation Test - Electromagnetic Waves

  • question_answer
    Beyond which frequency, the ionosphere bends any incident E.M. radiation but do not reflect it back towards the earth.

    A) 80 MHz         

    B)        40 MHz

    C) 20 MHz         

    D)        10 MHz

    Correct Answer: B

    Solution :

    [b] Wave is uv rays.


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