On an average, the resolving power of a light microscope is 0.25−0.3um, while that of an electron microscope is 2−10A˚. The magnification range of the light microscope is 2000 4000 , while that of an electron microscope is 1,00,000−3,00,000. Related Theory The resolving power of an objective lens is measured by its ability to differentiate two lines or points in an object. The greater the resolving power, the smaller the minimum distance between two lines or points that can still be distinguished. The larger the N.A., the higher the resolving power.