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

  • question_answer
    For a material, the refractive indices for red, violet and yellow colour light are respectively 1.52, 1.64 and 1.60. The dispersive power of the material is                                                          [MP PMT 1991]

    A)            2    

    B)            0.45

    C)            0.2 

    D)            0.045

    Correct Answer: C

    Solution :

               \[\omega =\frac{1.64-1.52}{1.6-1}=\frac{0.12}{0.6}=0.2\]


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