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

  • question_answer
    Three glass prisms A, B and C of same refractive index are placed in contact with each other as shown in figure, with no air gap between the prisms. Monochromatic ray of light OP passes through the prism assembly and emerges as QR. The conditions of minimum deviation is satisfied in the prisms [CPMT 1988]

    A)            A and C

    B)            B and C

    C)            A and B

    D)            In all prisms A, B and C

    Correct Answer: C

    Solution :

               In both A and B, the refracted ray is parallel to the base of prism.


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