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JEE Main & Advanced AIEEE Solved Paper-2011

  • question_answer
    This question has Statement-1 and Statement-2. Of the four choices given after the statements, choose the one that best describes the two statements. Statement-1:        A metallic surface is irradiated by a monochromatic light of frequency \[v>{{v}_{0}}\] (the threshold frequency). The maximum kinetic energy and the stopping potential are \[{{K}_{\max }}\] and \[{{V}_{0}}\] respectively. If the frequency incident on the surface is doubled, both the\[{{K}_{\max }}\] and \[{{V}_{0}}\] are also doubled. Statement-2:        The maximum kinetic energy and the stopping potential of photoelectrons emitted from a surface are linearly dependent on the frequency of incident light.   AIEEE  Solved  Paper-2011

    A) Statement-1 is false, Statement-2 is true

    B) Statement-1 is true, Statement-2 is false

    C)  Statement-1 is true, Statement-2 is true and Statement-2 is a correct explanation for Statement-1

    D) Statement-1 is true, Statement-2 is true and Statement-2 is not the correct explanation of Statement-1

    Correct Answer: A

    Solution :

                 \[{{k}_{\max }}=hf-\phi \] \[k{{'}_{\max }}=2hf-\phi \] \[k{{'}_{\max }}=2{{k}_{\max }}+\phi \] \[k{{'}_{\max }}>2{{k}_{\max }}\]s


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