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

  • question_answer
    If refractive index of red, violet and yellow lights are 1.42, 1.62 and 1.50 respectively for a medium. Its dispersive power will be                                                                 [RPMT 1997]

    A)            0.4 

    B)            0.3

    C)            0.2 

    D)            0.1

    Correct Answer: A

    Solution :

               \[\omega =\frac{{{\mu }_{V}}-{{\mu }_{R}}}{{{\mu }_{Y}}-1}=\frac{1.62-1.42}{1.5-1}=0.4\]


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