Calculate the energy of an electron of wavelength $4.35 imes 10^{-7} \mathrm{~m}$

Question

Calculate the energy of an electron of wavelength $4.35 	imes 10^{-7} \mathrm{~m}$

Professor PC Thomas Classes · Answer

Energy $E = \frac{hc}{\lambda} = \frac{6.626 	imes 10^{-34} 	imes 3 	imes 10^8}{4.35 	imes 10^{-7}} = 4.56 	imes 10^{-19} \mathrm{~J}$.