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JIPMER Jipmer Medical Solved Paper-2000

  • question_answer
    A convex lens of focal length 0.5 m and concave lens of focal length 1 m are combined. The power of the resulting lens will be:

    A)  - 1 D                                     

    B)  0.5 D                    

    C)  1D                         

    D)         - 0.5 D

    Correct Answer: C

    Solution :

    From the relation\[\frac{1}{f}=\frac{1}{{{f}_{1}}}+\frac{1}{{{f}_{2}}}\] \[=\frac{1}{0.5}+\frac{1}{-1.0}=2-1=1\,D\]


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