12th Class Physics Photo Electric Effect, X- Rays & Matter Waves Question Bank Dual Nature of Radiation and Matter Conceptual Problems

  • question_answer
    Define photoelectric work function. How is it related to threshold frequency?

    Answer:

                    The minimum amount of radiant energy needed to pull an electron (without imparting it any kinetic energy) from a metallic surface is called work function of the metal. The relation between work function \[{{W}_{0}}\]and threshold frequency \[{{v}_{0}}\] is \[{{W}_{0}}=h{{v}_{0}}\].


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