JEE Main & Advanced Physics Photo Electric Effect, X- Rays & Matter Waves Question Bank Topic Test - Photo Electric Effect, X-Rays & Matter Waves

  • question_answer
    A photon, an electron and a uranium nucleus all have the same wavelength. The one with the most energy       

    A) Is the photon

    B) Is the electron

    C) Is the uranium nucleus

    D) Depends upon the wavelength and the properties of the particle.

    Correct Answer: A

    Solution :

    [a] \[\lambda =\frac{h}{mv}=\frac{h}{\sqrt{2mE}}:\] \[\therefore \ E=\frac{{{h}^{2}}}{2m{{\lambda }^{2}}}\] \[\lambda \] is same for all, so \[E\propto \frac{1}{m}\]. Hence energy will be maximum for particle with lesser mass.

You need to login to perform this action.
You will be redirected in 3 sec spinner