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

  • question_answer
    In an astronomical telescope, the focal length of the objective lens is 100 cm and of eye-piece is 2 cm. The magnifying power of the telescope for the normal eye is [MP PET 1997]

    A)            50  

    B)            10

    C)            100

    D)            \[\frac{1}{50}\]

    Correct Answer: A

    Solution :

               \[m=-\frac{{{f}_{o}}}{{{f}_{e}}}=-\frac{100}{2}=-\,50.\]


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