Manipal Medical Manipal Medical Solved Paper-2003

  • question_answer
    The slope of a graph drawn between threshold  frequency  and  stopping potential is:

    A)  \[e\]

    B)  \[h\]

    C)  \[\frac{h}{e}\]

    D)  \[he\]

    Correct Answer: C

    Solution :

     Relation between threshold frequency \[({{v}_{0}})\]and potential\[{{V}_{0}}\]is\[e{{V}_{0}}=h{{v}_{0}}-\phi \] So,   \[{{V}_{0}}=\frac{h}{e}({{v}_{0}})-\frac{\phi }{e}\] Hence, slope of the graph is\[\frac{h}{e}\]


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