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

  • question_answer
    The focal length of the objective and eye piece of a telescope are respectively 60 cm and 10 cm. The magnitude of the magnifying power when the image is formed at infinity is                                            [MP PET 1991]

    A)            50 

    B)            6  

    C)            70  

    D)            5 

    Correct Answer: B

    Solution :

               \[m=\frac{{{f}_{o}}}{{{f}_{e}}}=\frac{60}{10}=6\].


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