The Wavelength of a Ruby Laser Is 694.

Question 41
Multiple Choice

The wavelength of a ruby laser is 694.3 nm.What is the energy difference between the two energy states for the transition that produces this light? (c = 3.00 × 108 m/s,1 eV = 1.60 × 10-19 J,h = 6.626 × 10-34 J ∙ s) A)1.54 eV B)1.65 eV C)1.79 eV D)1.81 eV