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VMMC VMMC Medical Solved Paper-2012

  • question_answer
    A thin prism of angle \[\text{1}{{\text{5}}^{\text{o}}}\] made of glass of refractive index \[{{\mu }_{1}}=1.5\]is combined with another prism of glass of refractive index \[{{\mu }_{2}}=1.75\]The combination of the prism produces dispersion without deviation. The angle of the second prism should be

    A) \[{{7}^{o}}\]             

    B)  \[{{10}^{o}}\]

    C) \[{{12}^{o}}\]             

    D)  \[{{5}^{o}}\]

    Correct Answer: B

    Solution :

     For without deviation \[\frac{A}{A}=\frac{\mu -1}{\mu -1}\] \[\frac{{{15}^{o}}}{A}=\frac{1.75-1}{1.5-1}\] \[\frac{15}{A}=\frac{0.75}{0.50}\] \[A=\frac{0.50\times 15}{0.75}={{10}^{o}}\]


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