The red light from a HeNe laboratory laser results from a transition in Ne.Determine the wavelength of the light given off if the energy difference between states is 1.08 eV.(h = 6.63 × 10−³⁴ J⋅s,c = 3.00 × 10⁸ m/s,1 eV = 1.60 × 10−¹⁹ J,and 1 nm = 10−⁹ m) A)383 nm B)1840 nm C)1150 nm D)1340 nm E)203 nm

Question

Quizplus · Accepted Answer

The energy difference in joules is 1.08 eV * 1.60 × 10^-19 J/eV = 1.728 × 10^-19 J. Using the formula E = hc/λ, we solve for λ: λ = hc/E = (6.63 × 10^-34 J⋅s * 3.00 × 10^8 m/s) / 1.728 × 10^-19 J = 1.15 × 10^-6 m = 1150 nm.

The Red Light from a HeNe Laboratory Laser Results from a Transition