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JEE Main & Advanced Physics Ray Optics Question Bank Microscope and Telescope

  • question_answer
    The magnifying power of a simple microscope is 6. The focal length of its lens in metres will be, if least distance of distinct vision is 25\[cm\]                                                      [MP PMT 2001]

    A)            0.05                                          

    B)            0.06

    C)            0.25                                          

    D)            0.12

    Correct Answer: A

    Solution :

               \[m=1+\frac{D}{f}\Rightarrow 6=1+\frac{25}{f}\Rightarrow f=5\ cm=0.05\ m\]


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