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JEE Main & Advanced Physics Photo Electric Effect, X- Rays & Matter Waves Question Bank Self Evaluation Test - Dual Nature of Radiation and Matter

  • question_answer
    The ratio of energies of X-rays of the wavelength \[\text{0}\text{.01}\overset{\text{o}}{\mathop{\text{A}}}\,\]and \[\text{0}\text{.5}\overset{\text{o}}{\mathop{\text{A}}}\,\] will be

    A) 1:1 

    B) 1:2 

    C) 1:5 

    D) 50:1

    Correct Answer: D

    Solution :

    [d] \[\frac{{{E}_{1}}}{{{E}_{2}}}=\frac{hc}{{{\lambda }_{1}}}\frac{{{\lambda }_{2}}}{hc}=\frac{{{\lambda }_{2}}}{{{\lambda }_{1}}}\Rightarrow \frac{{{E}_{1}}}{{{E}_{2}}}=\frac{50}{1}\]


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