2. Solved Papers
  3. WB JEE Medical

WB JEE Medical WB JEE Medical Solved Paper-2009

  • question_answer
    Electron microscope is based on the principle of

    A)  electromagnetic theory

    B)  resolution of glass lenses

    C)  magnification of glass lenses

    D)  refraction of light

    Correct Answer: A

    Solution :

                    Electron microscope was invented by Knoll and Ruska (1932). It is based on the principle of electromagnetic theory.


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