DUMET Medical DUMET Medical Solved Paper-2002

  • question_answer
    The light of wavelength 5000 A is incident on a metal whose work function is 2eV, the maximum kinetic energy of the photoelectron will be :

    A)  0.2eV        

    B)  0.47eV

    C)  1.5eV        

    D)  2eV

    Correct Answer: B

    Solution :

    When Wheatstone bridge is balanced, ratio of resistances connected in opposite arms of the bridge is same. \[\therefore \] \[\frac{P}{Q}=\frac{R}{S}\] \[\Rightarrow \] \[\frac{10}{100}=\frac{70}{S}\] \[\Rightarrow \] \[S=\frac{70\times 100}{10}=700\,\Omega \]


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