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

  • question_answer
    An astronomical telescope has objective and eye-piece lens of powers 0.5 D and 20 D respectively, its magnifying power will be                                                         [Pb. PET 2002]

    A)            8    

    B)            20

    C)            30  

    D)            40

    Correct Answer: D

    Solution :

               \[M=\frac{{{f}_{o}}}{{{f}_{e}}}=\frac{{{P}_{e}}}{{{P}_{o}}}=\frac{20}{0.5}=40\].


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