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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 photoelectric emission, electrons are ejected from metal X and Y by light of frequency f. The potential difference V required to stop the electrons is measured for various frequencies. If Y   as a greater work function than X, which graph illustrates the expected results?

    A)

    B)

    C)

    D)

    Correct Answer: A

    Solution :

    [a] V versus f has a constant slope of h/e, so both lines must be parallel. Also, work function is equal to intercept on f - axis.


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