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

  • question_answer
    The resolving power of a telescope whose lens has a diameter of 1.22 m for a wavelength of 5000 Å is [Kerala PMT 2002]

    A)            \[2\times {{10}^{5}}\]      

    B)            \[2\times {{10}^{6}}\]

    C)            \[2\times {{10}^{2}}\]      

    D)            \[2\times {{10}^{4}}\]

    Correct Answer: B

    Solution :

               Resolving power \[=\frac{d}{1.22\ \lambda }=\frac{1.22}{1.22\times 5000\times {{10}^{-10}}}=2\times {{10}^{6}}\]


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