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

  • question_answer
    On which of the following does the magnifying power of a telescope depends                                   [MP PET 1992]

    A)            The focal length of the objective only  

    B)            The diameter of aperture of the objective only

    C)            The focal length of the objective and that of the eye piece

    D)            The diameter of aperture of the objective and that of the eye piece 

    Correct Answer: C

    Solution :

               \[m=\frac{{{f}_{o}}}{{{f}_{e}}}\left( 1+\frac{{{f}_{e}}}{D} \right)\]


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