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10th Class Science Sources of Energy Question Bank Sources of Energy

  • question_answer
    If work function of a metal surface is 4.2 eV, then maximum wavelength which can eject electrons from this metal surface is

    A) \[\text{3}0\text{79}\overset{\circ }{\mathop{A}}\,\]

    B) \[~\text{4116}\overset{\circ }{\mathop{A}}\,\]

    C)  \[\text{2956}\overset{\circ }{\mathop{A}}\,\]  

    D) \[\text{5}0\text{88}\overset{\circ }{\mathop{A}}\,\]

    Correct Answer: C

    Solution :

    Not Available


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