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

  • question_answer
    The energy of a photon of light with wavelength 5000 \[\overset{\text{o}}{\mathop{\text{A}}}\,\] is approximately 2.5 eV. This way the energy of an X-ray photon with wavelength 1\[\overset{\text{o}}{\mathop{\text{A}}}\,\] would be

    A)  2.5/5000 eV

    B) \[2.5/{{(5000)}^{2}}eV\]

    C) \[2.5\times 5000\ eV\]     

    D) \[2.5\times {{(5000)}^{2}}eV\]

    Correct Answer: C

    Solution :

    [c] \[E\propto \frac{1}{\lambda }\Rightarrow \frac{2.5}{E'}=\frac{1}{5000}\Rightarrow E'=(2.5)\times 5000\ eV\]

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