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JEE Main & Advanced Physics Photo Electric Effect, X- Rays & Matter Waves Question Bank Self Evaluation Test - Dual Nature of Radiation and Matter

  • question_answer
    In a photo-emissive cell, with exciting wavelength\[\lambda \], the maximum kinetic energy of electron is K.  If the exciting wavelength is changed to \[3\lambda /4\] the kinetic energy of the fastest emitted electron will be

    A) 3K/4                             

    B) 4K/3

    C) less than 4K/3  

    D)        greater than 4K/3

    Correct Answer: D

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