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UPSC Physics Electric Current and Magnetism Question Bank Electricity, Magnetism and Light

  • question_answer
          If the focal length of the biconvex lens is 25 cm, then the power of the lens will be                               [NDA]

    A) + 4 dioptre

    B)      - 4 dioptre

    C) + 0.04 dioptre    

    D)      - 0.04 dioptre

    Correct Answer: A

    Solution :

    Not Available       


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