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JEE Main & Advanced Physics Wave Optics / तरंग प्रकाशिकी Question Bank Wave Nature and Interference of Light

  • question_answer
    Two coherent sources of different intensities send waves which interfere. The ratio of maximum intensity to the minimum intensity is 25. The intensities of the sources are in the ratio                                        [UPSEAT 2002]

    A)            25 : 1                                        

    B)            5 : 1

    C)            9 : 4                                          

    D)            25 : 16

    Correct Answer: C

    Solution :

               \[\frac{{{I}_{\max }}}{{{I}_{\min }}}={{\left( \frac{\sqrt{\frac{{{I}_{1}}}{{{I}_{2}}}}+1}{\sqrt{\frac{{{I}_{1}}}{{{I}_{2}}}}-1} \right)}^{2}}\Rightarrow \frac{{{I}_{1}}}{{{I}_{2}}}=\frac{9}{4}\]


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