How much energy does this light carry? A beam of light has a wavelength of 1060nm.

Question

Math 

Answer 1

A single photon of light in the beam carries energy given by

 

E = hc/λ = (6.63 x 10^-34 J·s)(3.00 x 10⁸ m/s) / (1060 x 10^-9 m) ≅ 1.876 x 10^-19 J