JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2014

  • question_answer
    What should be the velocity of an electron so that its momentum, becomes equal to that of a photon of wavelength\[\text{1}00\text{ }\mu \text{A}\]?

    A) 700 m/s

    B) 1000m/s

    C) 1400 m/s             

    D) 2800 m/s

    Correct Answer: C

    Solution :

                    Momentum \[\frac{3}{2}\text{m}/\text{s}\] \[\frac{2}{3}\text{m}/\text{s}\] \[{{\lambda }_{0}},\] \[\frac{25}{16}{{\lambda }_{0}}\] \[\frac{27}{20}{{\lambda }_{0}}\] \[\frac{20}{27}{{\lambda }_{0}}\]                


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