Answer to Question #151313 in Mechanics | Relativity for Alex

Question

Find enenrgy of photon whose wavelength is 3.8 x 10-7m

Answer 1

$E=\frac{h\times c}{\lambda}=\frac{6.6\times10^{-34}\times 3\times10^8}{3.8\times 10^{-7}}=5.21\times 10^{-19}$ J