College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 39

The resolving power of a microscope is proportional to the wavelength used. A resolution of 1.0 × 10 11 m (0.010 nm) would be required in order to "see" an atom. (a) If electrons were used (electron microscope), what minimum kinetic energy would be required of the electrons (b) If photons were used, what minimum photon energy would be needed to obtain 1.0 × 10 11 m resolution