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

  • question_answer
    Minimum deviation is observed with a prism having angle of prism A, angle of deviation \[\delta \], angle of incidence i and angle of emergence e. We then have generally [MP PET 1991]

    A)            i > e                                          

    B)            i < e

    C)            i = e                                          

    D)            i = e = \[\delta \]

    Correct Answer: C

    Solution :

               In minimum deviation condition \[\angle i=\angle e,\] \[\angle {{r}_{1}}=\angle {{r}_{2}}\]


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