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

  • question_answer
    If in compound microscope m1 and m2 be the linear magnification of the objective lens and eye lens respectively, then magnifying power of the compound microscope will be  [CPMT 1985; KCET 1994]

    A)            \[{{m}_{1}}-{{m}_{2}}\]     

    B)   \[\sqrt{{{m}_{1}}+{{m}_{2}}}\] 

    C)            \[({{m}_{1}}+{{m}_{2}})/2\]  

    D)            \[{{m}_{1}}\times {{m}_{2}}\] 

    Correct Answer: D

    Solution :

               Magnification of a compound microscope is given by \[m=-\,\frac{{{v}_{o}}}{{{u}_{o}}}\times \frac{D}{{{u}_{e}}}\] Þ \[|\,m|\,={{m}_{o}}\times {{m}_{e}}\].


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