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JEE Main & Advanced Physics Photo Electric Effect, X- Rays & Matter Waves Question Bank Cathode Rays and Positive Rays

  • question_answer
    Which one of the following devices makes use of the electrons to strike certain substances to produce fluorescence                   [SCRA 1994]

    A)            Thermionic valve                

    B)            Photoelectric cell

    C)            Cathode ray oscilloscope

    D)            Electron gun

    Correct Answer: C

    Solution :


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