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

  • question_answer
    The deviation caused in red, yellow and violet colours for crown glass prism are 2.84o, 3.28o and 3.72o respectively.  The dispersive power of prism material is  [KCET (Engg.) 1999]

    A)            0.268                                       

    B)            0.368

    C)            0.468                                       

    D)            0.568

    Correct Answer: A

    Solution :

               \[\omega =\frac{{{\delta }_{V}}-{{\delta }_{R}}}{{{\delta }_{Y}}}\]\[=\frac{3.72-2.84}{3.28}=0.268\]


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