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

  • question_answer
    If the ratio of amplitude of two waves is 4 : 3, then the ratio of maximum and minimum intensity is          [AFMC 1997]

    A)            16  : 18                                    

    B)            18 : 16

    C)            49 : 1                                        

    D)            94 : 1

    Correct Answer: C

    Solution :

               \[\frac{{{I}_{\max }}}{{{I}_{\min }}}={{\left( \frac{\frac{{{a}_{1}}}{{{a}_{2}}}+1}{\frac{{{a}_{1}}}{{{a}_{2}}}-1} \right)}^{2}}={{\left( \frac{\frac{4}{3}+1}{\frac{4}{3}-1} \right)}^{2}}=\frac{49}{1}\]


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