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

  • question_answer
    A Gallilean telescope has objective and eye-piece of focal lengths 200 cm and 2 cm respectively. The magnifying power of the telescope for normal vision is   [MP PMT 1996]

    A)            90  

    B)            100

    C)            108

    D)            198

    Correct Answer: B

    Solution :

               For normal vision (relaxed eye), the image is formed at infinity. Hence the magnifying power of Gallilean telescope \[=\frac{{{f}_{o}}}{{{f}_{e}}}=\frac{200}{2}=100\].


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