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

  • question_answer
    If the amplitude ratio of two sources producing interference is 3 : 5, the ratio of intensities at maxima and minima is [MP PMT 1996]

    A)            25 : 16                                     

    B)            5 : 3

    C)            16 : 1                                        

    D)            25 : 9

    Correct Answer: C

    Solution :

                       \[\frac{{{a}_{1}}}{{{a}_{2}}}=\frac{3}{5}\]            \[\therefore \frac{{{I}_{\max }}}{{{I}_{\min }}}=\frac{{{({{a}_{1}}+{{a}_{2}})}^{2}}}{{{({{a}_{1}}-{{a}_{2}})}^{2}}}=\frac{{{(3+5)}^{2}}}{{{(3-5)}^{2}}}=\frac{16}{1}\]


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