Question

What is the energy of a photon with a frequency of 3.17x10¹1 Hz?2.09x10-452.09x10-23J2.10x10-224.78x1044J

Answer 1

We will have the following:

$E_1=h\ast f\Rightarrow E_1=(6.626\ast10^{-34}J\ast Hz)(3.17\ast10^{11}Hz)\Rightarrow E_1\approx2.1\ast10^{-22}J$

So, the solution will be:

$2.10\ast10^{-22}J$