## Physics (10th Edition)

Recall the equation E= hν = hc/λ Then, wavelength, λ= hc/E Here, H is the Planck's constant, c is the speed of light and E is the energy. Substituting the values: λ=$\frac{(6.626×10^{-34}Js)(3.00×10^{8}m/s)}{6.4×10^{-19}J}$=$3.1×10^{-7}m$= 310 nm