JEE Main & Advanced Physics Photo Electric Effect, X- Rays & Matter Waves Question Bank Photon and Photoelectric Effect

  • question_answer
    Which of one is correct                                                  [DCE 1998]

    A)            \[{{E}^{2}}={{p}^{2}}{{c}^{2}}\]                                        

    B)            \[{{E}^{2}}={{p}^{2}}c\]

    C)            \[{{E}^{2}}=p{{c}^{2}}\]   

    D)            \[{{E}^{2}}={{p}^{2}}/{{c}^{2}}\]

    Correct Answer: A

    Solution :

               Momentum \[p=\frac{E}{c}\,\Rightarrow \,{{E}^{2}}={{p}^{2}}{{c}^{2}}\]


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