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RAJASTHAN PMT Rajasthan - PMT Solved Paper-1995

  • question_answer
    Ratio of energies of two photons whose wavelengths are \[6000\overset{\text{o}}{\mathop{\text{A}}}\,\]and \[4000\overset{\text{o}}{\mathop{\text{A}}}\,\] is:

    A)  \[2:3\]                 

    B)                         \[3:2\]                 

    C)         \[1:5\]                 

    D)                         \[5:1\]

    Correct Answer: A

    Solution :

    Energy of photon \[E=\frac{hc}{\lambda }\] Ratio of energies of photon                 \[\frac{{{E}_{1}}}{{{E}_{2}}}=\frac{{{\lambda }_{2}}}{{{\lambda }_{1}}}=\frac{4000}{6000}\]                 \[{{E}_{1}}:{{E}_{2}}=2:3\]


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