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Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2006

  • question_answer
    The refractive indices of violet and red light are 1.54 and 1.52 respectively. If the angle of the prism is \[10{}^\circ \], the angular dispersion is

    A) \[0.02{}^\circ \]

    B) \[0.2{}^\circ \]

    C) \[3.06{}^\circ \]

    D) \[30.6{}^\circ \]

    Correct Answer: B

    Solution :

    Given,  \[{{\mu }_{V}}=1.54,\] \[{{\mu }_{R}}=1.52,\]    \[A={{10}^{o}}\] Angular dispersion  \[(\theta )=({{\mu }_{V}}-{{\mu }_{R}})A\]                                 \[=(1.54-1.52)\times {{10}^{o}}\]                                 \[={{0.2}^{o}}\]


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