12th Class Physics Photo Electric Effect, X- Rays & Matter Waves Question Bank MCQs - Dual Nature of Radiation and Matter

  • question_answer
    The ratio of de-Broglie wavelength associated with two electrons accelerated through 25 V and 36 V is

    A) 25/36

    B) 36/25

    C) 5/6

    D) 6/5

    Correct Answer: D

    Solution :

    Option [d] is correct. Explanation: \[\lambda \propto 1/\surd \operatorname{V}\] \[\therefore {{\lambda }_{1}}/{{\lambda }_{2}}=\surd ({{\operatorname{V}}_{2}}/{{\operatorname{V}}_{1}})=6/5\]


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