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CMC Medical CMC-Medical VELLORE Solved Paper-2007

  • question_answer
    A least distance of distinct vision is 25 cm. The focal length of a convex lens is 5 cm. It can act as a simple microscope of magnifying power

    A)  4                                            

    B)  5

    C)  6                                            

    D)  none of these

    Correct Answer: C

    Solution :

                    Magnifying power, \[m=1+\frac{D}{f}\] Given \[D=25\,cm,\] \[f=5\,cm\] \[\therefore \]  \[m=1+\frac{25}{5}\] \[\Rightarrow \]               \[m=1+5=6\]


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