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10th Class Science Light - Reflection and Refraction Question Bank Light

  • question_answer
    Dispersive power of crown glass is (given\[{{\mu }_{v}}=1.523\,and\,{{\mu }_{R}}=1.5145\])

    A)  1.6                        

    B)         0.16

    C)  0.016                     

    D)  0.0016

    Correct Answer: C

    Solution :

                    \[\omega =\frac{{{\mu }_{v}}-{{\mu }_{R}}}{\mu -1}\] and        \[\mu =\frac{{{\mu }_{v}}-{{\mu }_{R}}}{2}\]                    \[=\frac{1.523-1.5145}{(1\cdot 5187-1)}\]2                    \[=1.5187\]                 \[\omega =\frac{1.523-1.5145}{(1.5187-1)}\]                    \[=\frac{0.0085}{0.5187}\]                    \[\mathbf{=0}\mathbf{.016}\]


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