Question

What is the energy of a photon with a frequency of 7.17 X 10^14 s^-1? (h=6.626 x 10^-34 J X S)

Answer 1

$$E=h\nu$$

$$E = 6.626*10^{-34}*7.17*10^{14} = 47.5*10^{-20}J$$