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  3. Haryana PMT

Haryana PMT Haryana PMT Solved Paper-1999

  • question_answer
    An achromatic combination is to be obtained      using a convex and concave lens, the lenses       chosen should have :

    A)  the product of their power and dispersive          powers are equal

    B)  their powers are equal

    C)  their refractive indices be equal

    D)  none of these

    Correct Answer: D

    Solution :

                    Not Available


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