Question

An electron of energy 150 eV has wavelength of 10^{-10} m. The wavelength of a 0.60 keV electron is (a) 0.50 A^{†extdegree }(b) 0.75 A^{†extdegree }(c) 1.2 A^{†extdegree }(d) 1.5 A^†extdegree.

Answer 1