The wavelength of a ruby laser is 694.3 nm.What is the energy difference between the two energy states involved in laser action? (c = 2.9979 × 10⁸ m/s,h = 6.626 × 10^-34 J • s, A) 1.537 eV B) 1.646 eV C) 1.786 eV D) 1.812 eV E) 3.572 eV

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The Answer of The wavelength of a ruby laser is 694.3 nm.What is the energy difference between the two energy states involved in laser action? (c = 2.9979 × 10⁸ m/s,h = 6.626 × 10^-34 J • s, A) 1.537 eV B) 1.646 eV C) 1.786 eV D) 1.812 eV E) 3.572 eV

The Wavelength of a Ruby Laser Is 694