Just going over some practice questions, and one of them is:
1. Verify the value of the constant, 1240, in the Duane-Hunt relation.
E(eV) = 1240/lambda(nm)
The Attempt at a Solution
I know it is used as a quick method in finding how much energy is involved when a molecule absorbs a photon of light. I therefore know how to use it in a question. However, I'm stumped as to verifying the actual value of the constant. Any insight is appreciated!