DUMET Medical DUMET Medical Solved Paper-2002

  • question_answer
    A prism has a refracting angle of \[{{60}^{o}}\]. It produces a minimum deviation of \[{{30}^{o}}\], the angle of incidence is :

    A)  \[{{60}^{o}}\]

    B)  \[{{45}^{o}}\]

    C)  \[{{35}^{o}}\]            

    D)  \[{{15}^{o}}\]

    Correct Answer: B

    Solution :

    Let A be the angle of prism, then in minimum deviation position \[i=\frac{A={{\delta }_{m}}}{2}\] Given, \[A={{60}^{o}},\,{{\delta }_{m}}={{30}^{o}}\] \[\therefore \] \[i=\frac{{{60}^{o}}+{{30}^{o}}}{2}{{45}^{o}}\]


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