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NEET NEET SOLVED PAPER 2017

  • question_answer
    The ratio of resolving powers of an optical microscope for two wavelengths \[{{\lambda }_{1}}=4000\,\overset{\text{o}}{\mathop{\text{A}}}\,\]and \[{{\lambda }_{2}}=6000\,\overset{\text{o}}{\mathop{\text{A}}}\,\]is                                                                                                                                                           

    A)  16 : 81                 

    B)  8 : 27

    C)   9 : 4                                     

    D)   3 : 2

    Correct Answer: D

    Solution :

                     Resolving power \[\propto \frac{1}{\lambda }\] \[\frac{{{R}_{1}}}{{{R}_{2}}}=\frac{{{\lambda }_{2}}}{{{\lambda }_{1}}}\] \[=\frac{6000\overset{\text{o}}{\mathop{\text{A}}}\,}{4000\overset{\text{o}}{\mathop{\text{A}}}\,}\] \[=\frac{3}{2}\]


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