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MGIMS WARDHA MGIMS WARDHA Solved Paper-2011

  • question_answer
    Two lenses have powers equal to +2 D and -4 D respectively, the power of combination will be

    A)  -2D                                       

    B)  +2D

    C)   -40                                       

    D)  +4D

    Correct Answer: A

    Solution :

                     Power of combination is given by \[P={{P}_{1}}+{{P}_{2}}=2D+(-4D)=-2D\]


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