JEE Main & Advanced Physics Question Bank Prism Theory and Dispersion of Light

  • question_answer
    For a medium, refractive indices for violet, red and yellow are 1.62, 1.52 and 1.55 respectively, then dispersive power of medium will be                                                                [RPET 1997]

    A)            0.65                                          

    B)            0.22

    C)            0.18                                          

    D)            0.02

    Correct Answer: C

    Solution :

               \[\omega =\frac{{{\mu }_{v}}-{{\mu }_{R}}}{{{\mu }_{y}}-1}=\frac{1.62-1.52}{1.55-1}=0.18\]


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