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BVP Medical BVP Medical Solved Paper-2010

  • question_answer
    Radiations of two photon energies twice andfive times the work function of metal areincident successively on the metal surface.The ratio of the maximum velocity of thephotoelectrons emitted in the two caseswill be

    A)  1 : 1                                      

    B)  1 : 2

    C)  1 : 3                                      

    D)  1 : 4

    Correct Answer: B

    Solution :

                    \[\overset{0}{\mathop{A}}\,\] First case, \[8\times {{10}^{-4}}red\] Second case, \[6\times {{10}^{-4}}red\] Therefore, from Eqs. (i) and (ii), \[4\times {{10}^{-4}}red\]  or  \[16\times {{10}^{-4}}red\]


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