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  3. Chhattisgarh PMT

Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2007

  • question_answer
    A ray of light is incident on a equilateral prism kept on a horizontal table (as shown). Which of the following statement is wrong for the angle  of minimum deviation ?

    A)  P Q should be parallel to the base

    B)  Q R should be parallel to the base

    C)  RS should be parallel to the base

    D)  Any one of PQ and RS should be horizontal

    Correct Answer: B

    Solution :

    For minimum angle of deviation the refracted ray should be parallel to the base of the prism. Therefore, in figure QR should be parallel to the base.


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