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

  • question_answer
    A ray passes through a prism of angle 60° in minimum deviation position and suffers a deviation of 30°. What is the angle of incidence on the prism [MP PMT 1995; Pb. PMT 2001; RPMT 2003]

    A)            30°

    B)            45°

    C)            60°

    D)            90°

    Correct Answer: B

    Solution :

               \[i=\frac{A+{{\delta }_{m}}}{2}\]\[=\frac{60{}^\circ +30{}^\circ }{2}=45{}^\circ \]


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