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  3. 12th Class
  4. Physics
  5. Photo Electric Effect, X- Rays & Matter Waves

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

  • question_answer
    As the accelerating voltage increases, the wavelength of electron as wave

    A) decreases.

    B) increases.

    C) remains same.

    D) upto 100 keV increases and then decreases.

    Correct Answer: A

    Solution :

    Option [a] is correct. Explanation: \[\lambda =\frac{h}{\sqrt{2me\operatorname{V}}}\] So, as V increases, \[\lambda \] decreases.


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